I've just started learning Java and I'm working on an audio steganography project in Java (i.e. hiding a text file in a wav file).
For that I store a text and wav file in two files. Now I want to read them in bytes and replace random bits of the wav file with text file bits.
How can i read the files in bytes? (I've tried using InputStream). Is it possible to replace random bits in wav file with bits of text file? Are there any functions for it?
Once I've read the files (both text and wav file), how can I edit (and replace) the bytes of wav file?
This is the the First screen, when user hits on HIDE button, the next screen opens up.
public class OptionScreen extends javax.swing.JFrame {
/** Creates new form OptionScreen */
public OptionScreen() {
initComponents();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
hide = new javax.swing.JButton();
unhide = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
hide.setText("Hide");
hide.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
hideActionPerformed(evt);
}
});
unhide.setText("UnHide");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(55, 55, 55)
.addComponent(hide, javax.swing.GroupLayout.PREFERRED_SIZE, 88, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(94, 94, 94)
.addComponent(unhide, javax.swing.GroupLayout.PREFERRED_SIZE, 82, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(81, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(109, 109, 109)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(hide, javax.swing.GroupLayout.PREFERRED_SIZE, 88, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(unhide, javax.swing.GroupLayout.PREFERRED_SIZE, 90, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(101, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void hideActionPerformed(java.awt.event.ActionEvent evt) {
second s=new second();
s.setVisible(true);
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new OptionScreen().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton hide;
private javax.swing.JButton unhide;
// End of variables declaration
}
import java.io.DataInputStream;
import java.io.File;
import java.io.File.*;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFileChooser;
public class second extends javax.swing.JFrame {
private File afile; // put at bottom of class
private File tfile;
/** Creates new form second */
public second() {
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
text = new javax.swing.JButton();
audio = new javax.swing.JButton();
tname = new javax.swing.JLabel();
aname = new javax.swing.JLabel();
begin = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
text.setText("TEXT FILE");
text.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textActionPerformed(evt);
}
});
audio.setText("AUDIO FILE");
audio.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
audioActionPerformed(evt);
}
});
begin.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
begin.setText("BEGIN");
begin.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
beginActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(87, 87, 87)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(text, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(audio, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addGap(18, 18, 18)
.addComponent(tname, javax.swing.GroupLayout.PREFERRED_SIZE, 57, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(26, 26, 26)
.addComponent(aname, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addGroup(layout.createSequentialGroup()
.addGap(270, 270, 270)
.addComponent(begin, javax.swing.GroupLayout.PREFERRED_SIZE, 99, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(31, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(101, 101, 101)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(text)
.addComponent(tname, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(32, 32, 32)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(audio)
.addComponent(aname, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(begin, javax.swing.GroupLayout.PREFERRED_SIZE, 96, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(19, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void textActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser opentext=new JFileChooser();
opentext.showOpenDialog(this);
int returnVal = opentext.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
tfile = opentext.getSelectedFile();
String tfname=tfile.getName();
tname.setText(tfname);
// ... code that loads the contents of the file in the text area
}
}
private void audioActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser openaudio=new JFileChooser();
openaudio.showOpenDialog(this);
int returnVal = openaudio.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
afile = openaudio.getSelectedFile();
aname.setText(afile.getName());
// ... code that loads the contents of the file in the text area
}
}
private void beginActionPerformed(java.awt.event.ActionEvent evt) {
try {
InputStream fint = new FileInputStream(tfile);
byte []bt=new byte[(int)afile.length()];
InputStream fina = new FileInputStream(afile);
int offset = 0;
int numRead = 0;
//
try {
System.out.println(new DataInputStream(fint).readByte());
} catch (IOException ex) {
Logger.getLogger(second.class.getName()).log(Level.SEVERE, null, ex);
}
//
System.out.println(bt);
//////////////////////////////////////////////////////////////////
FileOutputStream outs=new FileOutputStream(new File("C:\\Documents and Settings\\Administrator\\My Documents\\My Music\\Secret.wav"));
} catch (FileNotFoundException ex) {
}
//end of try catch
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new second().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel aname;
private javax.swing.JButton audio;
private javax.swing.JButton begin;
private javax.swing.JButton text;
private javax.swing.JLabel tname;
// End of variables declaration
}
You have 2 ways: (1) read your file into byte array, than manipulate it in memory and then write it back to disk. (2) use RandomAccessFile that allows you manipulating file directly on disk.
Related
I just want to ask if I can change the text in radio button.
For example:
here in the picture if I put a number, it will show the number factors at the radio button. ( the factor 1 will just show in Jlabel and the rest of the factor will show at the Radio button) the problem part at the private void checkbtnActionPerformed(java.awt.event.ActionEvent evt) I already tried to use .setText() but I think this will not work for radio button or button group. Is there another way to do that
public class primefactor extends javax.swing.JFrame {
/**
* Creates new form primefactor
*/
public primefactor() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
numfactorgr = new javax.swing.ButtonGroup();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
checkbtn = new javax.swing.JButton();
cleatbtn = new javax.swing.JButton();
inspectbtn = new javax.swing.JButton();
num1 = new javax.swing.JLabel();
numdis = new javax.swing.JLabel();
numtxt = new javax.swing.JTextField();
primeyn = new javax.swing.JLabel();
numfactors1 = new javax.swing.JRadioButton();
numfactors2 = new javax.swing.JRadioButton();
numfactors3 = new javax.swing.JRadioButton();
numfactors4 = new javax.swing.JRadioButton();
numfactors = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("NUMBER::");
jLabel2.setText("FACTORS::");
jLabel3.setText("PRIME:");
checkbtn.setText("CHECK");
checkbtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
checkbtnActionPerformed(evt);
}
});
cleatbtn.setText("CLEAR");
cleatbtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cleatbtnActionPerformed(evt);
}
});
inspectbtn.setText("INSPECT");
inspectbtn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
inspectbtnActionPerformed(evt);
}
});
numdis.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
numtxt.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
numtxtActionPerformed(evt);
}
});
numfactorgr.add(numfactors1);
numfactorgr.add(numfactors2);
numfactorgr.add(numfactors3);
numfactorgr.add(numfactors4);
numfactors.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(checkbtn, javax.swing.GroupLayout.PREFERRED_SIZE, 190, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 138, Short.MAX_VALUE)
.addComponent(cleatbtn, javax.swing.GroupLayout.PREFERRED_SIZE, 192, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(num1)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(numdis, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED))
.addGroup(layout.createSequentialGroup()
.addGap(94, 94, 94)
.addComponent(numfactors, javax.swing.GroupLayout.PREFERRED_SIZE, 184, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addComponent(inspectbtn))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(primeyn)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numtxt))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(numfactors1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numfactors2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numfactors3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(numfactors4)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(23, 23, 23)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(numtxt, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(30, 30, 30)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(numdis)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(inspectbtn)
.addComponent(num1)
.addComponent(numfactors)))
.addGap(28, 28, 28)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(primeyn))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 3, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(numfactors1)
.addComponent(numfactors2)
.addComponent(numfactors3)
.addComponent(numfactors4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(checkbtn)
.addComponent(cleatbtn))
.addContainerGap())
);
pack();
}// </editor-fold>
private void numtxtActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void checkbtnActionPerformed(java.awt.event.ActionEvent evt) {
String str = numtxt.getText();
int num = Integer.parseInt(str);
int flag = 0;
numdis.setText(str);
num1.setText("1");
for (int i=2;i<num;i++){
if (num%i ==0){
flag =1;
num1.setText("1");
numfactors.setText( numfactors.getText()+i+" "); // at this part it will display the radio button with the number factors. (but I use first the jlabel numfactors to show the number factors)
}
}
if (flag == 0){
primeyn.setText("Yes");
}
else{
primeyn.setText(primeyn.getText()+"No");
}
}
private void cleatbtnActionPerformed(java.awt.event.ActionEvent evt) {
numtxt.setText("");
num1.setText("");
numdis.setText("");
numfactors.setText("");
primeyn.setText("");
}
private void inspectbtnActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(primefactor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new primefactor().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton checkbtn;
private javax.swing.JButton cleatbtn;
private javax.swing.JButton inspectbtn;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel num1;
private javax.swing.JLabel numdis;
private javax.swing.ButtonGroup numfactorgr;
private javax.swing.JLabel numfactors;
private javax.swing.JRadioButton numfactors1;
private javax.swing.JRadioButton numfactors2;
private javax.swing.JRadioButton numfactors3;
private javax.swing.JRadioButton numfactors4;
private javax.swing.JTextField numtxt;
private javax.swing.JLabel primeyn;
// End of variables declaration
}
This question already has answers here:
GUI Freezes During While Loop in Java
(1 answer)
The program freezes when i put a while loop in a action listener
(1 answer)
Closed 2 years ago.
I am attempting to redirect my system.out.println to dislpay to the JTextArea element of the GUI (hence it being public and static so that the methods that print something can print to it.
But once it gets to the line:
System.out.println("sdsdsdsdsa");
the program just does not go any further. The next two lines are:
System.setOut(printStream);
System.setErr(printStream);
which it does not seem to print out and when I exit the program this error appears:
"Exception: java.lang.NullPointerException thrown from the UncaughtExceptionHandler in thread "main""
and I am unable to verify whether printStream is null or not because the debugger does not seem to following into the action performed method once the start button (JButton1) is pressed.
Below is the main class in the GUI:
public class TrainingProgramme {
static PrintStream printStream = new PrintStream(new GUITextOutputStream(TrainingProgrammeGUI.jTextArea1));
public static void main(String[] args) {
TrainingProgrammeGUI gui = new TrainingProgrammeGUI();
gui.setVisible(true);
System.setOut(printStream);
System.setErr(printStream);
System.out.println("==================================\n"+
"* WELCOME TO CATCH ME IF YOU CAN *\n"+
"==================================\n");
}
GUI class:
package javaapplication2;
import java.awt.event.ActionEvent;
import java.io.PrintStream;
import java.util.Scanner;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* #author viljo
*/
public class TrainingProgrammeGUI extends javax.swing.JFrame {
static PrintStream printStream = new PrintStream(new GUITextOutputStream(TrainingProgrammeGUI.jTextArea1));
double startTimer = System.nanoTime();
double stopTimer = 0;
Scanner scan = new Scanner(System.in);
Player gameCharacter = null;
Teacher teacher = null;
int finishedProgram = 0;
int userChoice = -1;
/**
* Creates new form TrainingProgrammeGUI
*/
public TrainingProgrammeGUI() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
filler1 = new javax.swing.Box.Filler(new java.awt.Dimension(0, 0), new java.awt.Dimension(0, 0), new java.awt.Dimension(32767, 32767));
jLabel1 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jTextField1 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();
jButton4 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setFont(new java.awt.Font("Arial", 1, 24)); // NOI18N
jLabel1.setText("CIA Training Programme");
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
}
});
jLabel2.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel2.setText("Game: ");
jButton1.setText("Start Game");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton3.setText("What is this game?");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
jLabel3.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
jLabel3.setText("Type Here: ");
jButton4.setText("Exit");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(filler1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(159, 159, 159))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(261, 261, 261)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addGap(94, 94, 94)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel2)
.addComponent(jLabel3))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 456, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 131, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(170, 170, 170)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 132, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(33, 33, 33)
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 132, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(33, 33, 33)
.addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 132, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(175, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addGap(70, 70, 70)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 47, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 47, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 60, Short.MAX_VALUE)
.addComponent(filler1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 226, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGap(20, 20, 20))
);
pack();
}// </editor-fold>
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
TrainingProgrammeGUI programme = new TrainingProgrammeGUI();
programme.setVisible(true);
}
private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
System.out.print("\nThank you for using our training programme!");
System.exit(0);
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
System.out.println("sdsdsdsdsa");
System.setOut(printStream);
System.setErr(printStream);
System.out.println("==================================\n"+
"* WELCOME TO CATCH ME IF YOU CAN *\n"+
"==================================\n");
userChoice = TrainingProgramme.checkInputWithPhrase("1.) Start Game\n2.) What is this game?\n3.) Quit", 1, 3);
teacher = new Teacher("John Doe", "Teacher");
gameCharacter = teacher.introductionLines(); // teacher reads a few lines and asks questions then returns Player class
boolean userFinished = false;
gameCharacter.getHotelRoom().setPlayerHere(true);
do { // Checks which room player is in then reads instructions for room. Loop finishes when player wants to chooses suspect
if (gameCharacter.getHotelKitchen().isPlayerHere()) {
if ("HotelRoom".equals((gameCharacter.getHotelKitchen().instructions(teacher)))) {
System.out.println("\nRoom chosen!\n");
gameCharacter.getHotelKitchen().setPlayerHere(false); // Takes player out of current room
gameCharacter.getHotelRoom().setPlayerHere(true); // Puts players into chosen room
}
} else {
if ("Choose".equals((gameCharacter.getHotelRoom().instructions(teacher)))) {
stopTimer = System.nanoTime();
Player.timeTaken = (stopTimer - startTimer) / 10000000; //time taken to finish inspecting items (in seconds)
teacher.chooseWhoDidIt(gameCharacter);
finishedProgram = 1; //Stop the curret loop
userFinished = true; //Stop the main menu loop
} else {
System.out.println("\nKitchen chosen!\n");
gameCharacter.getHotelRoom().setPlayerHere(false);// Takes player out of current room
gameCharacter.getHotelKitchen().setPlayerHere(true);// Puts players into chosen room
}
}
} while (userFinished == false);
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
System.out.println("\n+===========================================================+");
System.out.println("|This game was created to help train our new junior recruits|");
System.out.println("+===========================================================+\n\n");
System.out.println("Objective: Gather evidence by looking for clues\n"+
"and once you are done go back to the room to guess \n"+
"which suspect did it. Suspects are provided once you have\n"+
"went back to the room and decided to guess who did the crime!\n");
}
// Variables declaration - do not modify
private javax.swing.Box.Filler filler1;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JScrollPane jScrollPane1;
public static javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
PrintStream class:
package net.codejava.swing;
import java.io.IOException;
import java.io.OutputStream;
import javax.swing.JTextArea;
/**
* This class extends from OutputStream to redirect output to a JTextArrea
* #author www.codejava.net
*
*/
public class CustomOutputStream extends OutputStream {
private JTextArea textArea;
public CustomOutputStream(JTextArea textArea) {
this.textArea = textArea;
}
#Override
public void write(int b) throws IOException {
// redirects data to the text area
textArea.append(String.valueOf((char)b));
// scrolls the text area to the end of data
textArea.setCaretPosition(textArea.getDocument().getLength());
}
}
I have following Simple Utility Calculator
Now i want to apply some Junit Testing here.
I don't know how to perform a Junit testing on Gui.
So kindly help me out.
Code is:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package calculator;
import java.io.*;
import java.text.DecimalFormat;
/**
*
* #author owner
*/
public class Calculator_Utility extends javax.swing.JFrame {
/**
* Creates new form Calculator_Utility
*/
public Calculator_Utility() {
initComponents();UsePowerKw.setText("4.0");
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
private void setComponentsName(){
AddButton.setName("Add");
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
CostPerKW = new javax.swing.JLabel();
SelectAppliance = new javax.swing.JLabel();
PowerUsage = new javax.swing.JLabel();
NumberHoursUse = new javax.swing.JLabel();
TotalCostApp = new javax.swing.JLabel();
AddButton = new javax.swing.JButton();
CostPerKwTextField = new javax.swing.JTextField();
UsePowerKw = new javax.swing.JTextField();
HourUse = new javax.swing.JTextField();
CostApp = new javax.swing.JTextField();
AllTotal = new javax.swing.JLabel();
AllTotalApp = new javax.swing.JTextField();
SelectApp = new javax.swing.JComboBox<>();
Showfield = new javax.swing.JTextField();
GallonWater = new javax.swing.JLabel();
GallonWat = new javax.swing.JTextField();
Export = new javax.swing.JButton();
CostGallon = new javax.swing.JLabel();
CostGall = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
CostPerKW.setText("Cost Per KW Hour:");
SelectAppliance.setText("Select Appliance:");
PowerUsage.setText("Power Usage In KW Hours:");
NumberHoursUse.setText("Number of Hours use per day:");
TotalCostApp.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
TotalCostApp.setText("Total Cost For Appliance");
AddButton.setText("ADD");
AddButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
AddButtonActionPerformed(evt);
}
});
CostPerKwTextField.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
CostPerKwTextFieldActionPerformed(evt);
}
});
UsePowerKw.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
UsePowerKwActionPerformed(evt);
}
});
AllTotal.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
AllTotal.setText("Total of All Appliances");
SelectApp.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Refrigerator", "Washer", "Dryer", "Freezer", "Air Conditioner" }));
SelectApp.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SelectAppActionPerformed(evt);
}
});
GallonWater.setText("Gallon of Water:");
Export.setText("Export");
Export.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ExportActionPerformed(evt);
}
});
CostGallon.setText("Cost Per Gallon:");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(NumberHoursUse)
.addComponent(SelectAppliance)
.addComponent(PowerUsage)
.addComponent(CostPerKW))
.addComponent(CostGallon, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(GallonWater, javax.swing.GroupLayout.Alignment.TRAILING))
.addGap(4, 4, 4))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(AllTotal)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(CostPerKwTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(UsePowerKw, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(HourUse, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(SelectApp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(AllTotalApp, javax.swing.GroupLayout.PREFERRED_SIZE, 99, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(GallonWat, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(CostGall, javax.swing.GroupLayout.PREFERRED_SIZE, 111, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(Showfield, javax.swing.GroupLayout.PREFERRED_SIZE, 270, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 21, Short.MAX_VALUE)
.addComponent(Export)))
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(TotalCostApp)
.addGap(4, 4, 4)
.addComponent(CostApp, javax.swing.GroupLayout.PREFERRED_SIZE, 121, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(AddButton)
.addGap(24, 24, 24))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {AllTotalApp, CostApp, CostGall, CostPerKwTextField, GallonWat, HourUse, SelectApp, UsePowerKw});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(CostPerKW)
.addComponent(CostPerKwTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(SelectAppliance)
.addComponent(SelectApp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(PowerUsage)
.addComponent(UsePowerKw, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(NumberHoursUse)
.addComponent(HourUse, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(GallonWat, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(GallonWater)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(CostGallon)
.addComponent(CostGall, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 29, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(CostApp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(TotalCostApp))
.addComponent(AddButton))
.addGap(13, 13, 13)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(AllTotalApp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(AllTotal))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(Showfield, javax.swing.GroupLayout.PREFERRED_SIZE, 136, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(Export))
.addContainerGap())
);
pack();
}// </editor-fold>
//Declare Variables and intialize the variables
private void AddButtonActionPerformed(java.awt.event.ActionEvent evt) {
double answer;
double total = 0;
String s = SelectApp.getSelectedItem().toString();
//Check if user select "Washer" from drop down box, calculate usage with Gallon
if (s=="Washer") {
//DecimalFormat df= new DecimalFormat("#.##");
number1 = (int)((Double.parseDouble(CostPerKwTextField.getText())));
number2 = (int)((Double.parseDouble(UsePowerKw.getText())));
number3 = (int)((Double.parseDouble(HourUse.getText())));
number4 = (int)((Double.parseDouble(GallonWat.getText())));
answer = number1*number2*number3;
total =+ answer;
CostApp.setText(String.valueOf(answer + "\n"));
Showfield.setText(String.valueOf("The appliance run a total of " + answer + "\n"));
}
//if user select any appliances other than washer calculate usage
else
number1 = (int)((Double.parseDouble(CostPerKwTextField.getText())));
number2 = (int)((Double.parseDouble(UsePowerKw.getText())));
number3 = (int)((Double.parseDouble(HourUse.getText())));
answer = number1*number2*number3;
total =+ answer;
//Calculated amount is put into field
CostApp.setText(String.valueOf(answer + "\n"));
Showfield.setText(String.valueOf("The appliance run a total of " + answer + "\n"));
// TODO add your handling code here:
}
//Action listener/Events for JCombo. Pre-defined Power Usage for Each Appliacnes
private void SelectAppActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String s=SelectApp.getSelectedItem().toString();
double r=4;
double w=7;
double x=12;
double y=16;
double z=24;
if (s=="Refrigerator"){
UsePowerKw.setText(String.valueOf(r));
}
else if (s=="Washer") {UsePowerKw.setText(String.valueOf(w));}
else if (s=="Dryer") {UsePowerKw.setText(String.valueOf(x));}
else if (s=="Freezer") {UsePowerKw.setText(String.valueOf(y));}
else UsePowerKw.setText(String.valueOf(z));
}
private void UsePowerKwActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
//If jComboBox1 = "Refrigerator" then set jTextField4 = 22
}
//Action Listener/Event creates Data.txt with output
private void ExportActionPerformed(java.awt.event.ActionEvent evt) {
File file = new File("Data.txt");
try (Writer writer = new BufferedWriter(new FileWriter(file))) {
String contents = Showfield.getText();
//"The quick brown fox" +
//System.getProperty("line.separator") +
//"jumps over the lazy dog.";
writer.write(contents);
} catch (IOException e) {
e.printStackTrace();
}
}
private void CostPerKwTextFieldActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* #param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Calculator_Utility.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Calculator_Utility.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Calculator_Utility.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Calculator_Utility.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Calculator_Utility().setVisible(true);
}
});
}
public double number1, number2, number3, number4;
// Variables declaration - do not modify
private javax.swing.JButton AddButton;
private javax.swing.JLabel AllTotal;
private javax.swing.JTextField AllTotalApp;
private javax.swing.JTextField CostApp;
private javax.swing.JTextField CostGall;
private javax.swing.JLabel CostGallon;
private javax.swing.JLabel CostPerKW;
private javax.swing.JTextField CostPerKwTextField;
private javax.swing.JButton Export;
private javax.swing.JTextField GallonWat;
private javax.swing.JLabel GallonWater;
private javax.swing.JTextField HourUse;
private javax.swing.JLabel NumberHoursUse;
private javax.swing.JLabel PowerUsage;
private javax.swing.JComboBox<String> SelectApp;
private javax.swing.JLabel SelectAppliance;
private javax.swing.JTextField Showfield;
private javax.swing.JLabel TotalCostApp;
private javax.swing.JTextField UsePowerKw;
// End of variables declaration
}
Any testCase you can apply like proper working , (actual== expected Result) etc.
You can't test the GUI with JUnit. You can only test the methods.
For example you have a JButton with an actionListener witch calls the method calculate(1, 1):
JButton showDialogButton = new JButton("Text Button");
showDialogButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
calculate(1, 1);
}
});
private int calculate(int n1, int n2){
return n1 + n2;
}
Now, You cant test the JButton but you can test the method "calculate". We know that calculate(1, 1) will return us 2 so we test it:
assertEquals(2, calculate(1, 1));
This means, that you cannot "press the button with JUnit" but you can test the action the button does.
My problem is that It only shows two output in the progress bar 0% if not started and 100% instantly when the program finished scanning the file. I want it to show the process while scanning the file not 100% instantly.(its not updating the progress bar) Any help would be great. Thanks! :) Here is the full code:
import java.awt.event.ActionListener;
import javax.swing.Timer;
import java.io.File;
import java.io.FileOutputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.DataInputStream;
import java.io.FileReader;
import java.io.BufferedReader;
import javax.swing.JOptionPane;
import javax.swing.*;
import javax.swing.SwingWorker;
import javax.swing.SwingUtilities;
import java.util.List;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import
public class Log_in extends javax.swing.JFrame {
/**
* Creates new form Log_in
*/
FileOutputStream fos;
DataOutputStream dos;
FileInputStream fis ;
DataInputStream dis;
private Timer time;
private ActionListener ActionL;
public static String r;
public Log_in(){
setContentPane(new JLabel(new ImageIcon("C:\\Users\\Gondar\\Music\\bg.jpg")));
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jProgressBar1 = new javax.swing.JProgressBar();
jLabel2 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setText("Student Name");
jTextField1.setToolTipText("Enter your profile name.");
jButton1.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jButton1.setText("Submit");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel1.setFont(new java.awt.Font("Rockwell", 0, 26)); // NOI18N
jLabel1.setForeground(new java.awt.Color(255, 255, 255));
jLabel1.setText("Curriculum Simulator with Recommendation System");
jProgressBar1.setStringPainted(true);
jLabel2.setForeground(new java.awt.Color(102, 255, 102));
jLabel2.setText("Loading Profile....");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jProgressBar1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 208, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(203, 203, 203))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(477, 477, 477)
.addComponent(jLabel2))
.addGroup(layout.createSequentialGroup()
.addGap(465, 465, 465)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 88, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(420, 420, 420)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 182, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(83, 83, 83)
.addComponent(jLabel1)
.addGap(74, 74, 74)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(44, 44, 44)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 244, Short.MAX_VALUE)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
);
pack();
}// </editor-fold>
SwingWorker sw= new SwingWorker<Boolean,Integer>() {
protected Boolean doInBackground() throws Exception {
try {
double lengthPerPercent = 100.0;
long readLength = 0;
FileReader fr=new FileReader("mario.txt");
BufferedReader br=new BufferedReader(fr);
while((r = br.readLine())!= null){
readLength += r.length();
jProgressBar1.setValue((int)(lengthPerPercent * readLength));
}
fr.close();
}catch(Exception err) {
System.out.println(err);
}
return true;
}
protected void process(List<Integer> chunks) {
for (Integer i : chunks)
jProgressBar1.setValue(i);
}
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jProgressBar1 = new javax.swing.JProgressBar();
jLabel2 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setText("Student Name");
jTextField1.setToolTipText("Enter your profile name.");
jButton1.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jButton1.setText("Submit");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel1.setFont(new java.awt.Font("Rockwell", 0, 26)); // NOI18N
jLabel1.setForeground(new java.awt.Color(255, 255, 255));
jLabel1.setText("Curriculum Simulator with Recommendation System");
jProgressBar1.setStringPainted(true);
jLabel2.setForeground(new java.awt.Color(102, 255, 102));
jLabel2.setText("Loading Profile....");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jProgressBar1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(0, 208, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(203, 203, 203))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(477, 477, 477)
.addComponent(jLabel2))
.addGroup(layout.createSequentialGroup()
.addGap(465, 465, 465)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 88, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(420, 420, 420)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 182, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(83, 83, 83)
.addComponent(jLabel1)
.addGap(74, 74, 74)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(44, 44, 44)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 244, Short.MAX_VALUE)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
);
pack();
}// </editor-fold>
protected void done() {
try {
if (jProgressBar1.getValue() == 100 )
jProgressBar1.setValue(100); // 100% done
else
System.out.println("ProcessingFailed.");
}
catch (Exception ex) {
System.out.println("Processing Failed.");
}
}
};
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
sw.execute();
/*try {
double lengthPerPercent = 100.0;
long readLength = 0;
FileReader fr=new FileReader("mario.txt");
BufferedReader br=new BufferedReader(fr);
while ((r = br.readLine()) != null) {
readLength += r.length();
jProgressBar1.setValue((int) Math.round(lengthPerPercent * readLength));
}
jProgressBar1.setValue(100);
fr.close();
if (jProgressBar1.getValue() == 100) {
}
}catch(Exception err) {
JOptionPane.showMessageDialog(this, err);
}
}
/**
* #param args the command line arguments
*/
}
public static void main(String args[]) throws Exception{
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Log_in().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JProgressBar jProgressBar1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
So, you have two basic problems, first, you never call publish, so process will never be called and secondly, you progress calculations are wrong...
double lengthPerPercent = 100.0;
long readLength = 0;
FileReader fr=new FileReader("mario.txt");
BufferedReader br=new BufferedReader(fr);
while((r = br.readLine())!= null){
readLength += r.length();
jProgressBar1.setValue((int)(lengthPerPercent * readLength));
So, if you read 10 characters, you progress value would be 100 * 10 which equals 1000!
SwingWorker already has "progress" support, which you can use a PropertyChangeListener to be notified when it changes, for example
So, your code should look for more like...
File file = new File("mario.txt");
try (BufferedReader br = new BufferedReader(new FileReader(file))) {
String r = null;
long fileLength = file.length();
long readLength = 0;
while ((r = br.readLine()) != null) {
readLength += r.length();
setProgress((int) (((float) readLength / (float) fileLength) * 100f);
}
}
Then you would attach a PropertyChangeListener to the instance of SwingWorker and update the progress when the progress property changes
I am a beginner in java and I want to create a very simple audio steganography for my project.
First I started with a frame containing three buttons, which take a text file and .wav file from the user, and one button to begin encoding. I used filechoosers with the first two buttons to input files. I want the actionPerformed event of my "begin" button to convert the content of these two files to bytes. After that I plan to use an LSB algorithm to hide my text file in the .wav file.
My query is how can I use the files "tfile" and "afile" in private void beginActionPerformed method?
import java.io.File;
import java.io.FileInputStream;
import javax.swing.JFileChooser;
public class second extends javax.swing.JFrame {
/** Creates new form second */
public second() {
initComponents();
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
text = new javax.swing.JButton();
audio = new javax.swing.JButton();
tname = new javax.swing.JLabel();
aname = new javax.swing.JLabel();
begin = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
text.setText("TEXT FILE");
text.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textActionPerformed(evt);
}
});
audio.setText("AUDIO FILE");
audio.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
audioActionPerformed(evt);
}
});
begin.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
begin.setText("BEGIN");
begin.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
beginActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(87, 87, 87)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(text, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(audio, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addGap(18, 18, 18)
.addComponent(tname, javax.swing.GroupLayout.PREFERRED_SIZE, 57, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(26, 26, 26)
.addComponent(aname, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addGroup(layout.createSequentialGroup()
.addGap(270, 270, 270)
.addComponent(begin, javax.swing.GroupLayout.PREFERRED_SIZE, 99, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(31, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(101, 101, 101)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(text)
.addComponent(tname, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(32, 32, 32)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(audio)
.addComponent(aname, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(begin, javax.swing.GroupLayout.PREFERRED_SIZE, 96, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(19, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void textActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser opentext=new JFileChooser();
opentext.showOpenDialog(this);
int returnVal = opentext.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File tfile = opentext.getSelectedFile();
String tfname=tfile.getName();
tname.setText(tfname);
// ... code that loads the contents of the file in the text area
}
}
private void audioActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser openaudio=new JFileChooser();
openaudio.showOpenDialog(this);
int returnVal = openaudio.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File afile = openaudio.getSelectedFile();
aname.setText(afile.getName());
}
}
private void beginActionPerformed(java.awt.event.ActionEvent evt) {
FileInputStream fin = new FileInputStream(tfile);**//error here**
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new second().setVisible(true);
FileInputStream fin = new FileInputStream(tfile);
}
});
}
private javax.swing.JLabel aname;
private javax.swing.JButton audio;
private javax.swing.JButton begin;
private javax.swing.JButton text;
private javax.swing.JLabel tname;
// End of variables declaration
}
Also, is it fine if I use only FileInputStream for converting my .txt and .wav file into bytes here, or do I need to use anything else?
An easy way is to make them instance variables of the surrounding class (you should write your class names in camel-case to follow Java conventions, it helps others looking at your code):
public class Second extends javax.swing.JFrame {
private File afile;
private File tfile;
...
private void textActionPerformed(java.awt.event.ActionEvent evt) {
...
tfile = opentext.getSelectedFile();
//set instance variable instead of local variable
...
}
private void audioActionPerformed(java.awt.event.ActionEvent evt) {
...
afile = openaudio.getSelectedFile();
//set instance variable instead of local variable
...
}
private void beginActionPerformed(java.awt.event.ActionEvent evt) {
FileInputStream fin = new FileInputStream(tfile); //works now
}
}
This will not work in the main method though, since it's in a static context. So you could add a getter method for the Files in your Second class
public File getTFile() { return tfile; }
public File getAFile() { return afile; }
to be able to access the files from outside the class.
Please note that both afile and tfile will only be set after you clicked the buttons and chose a file for them, otherwise these references will still be null. So what you want to do in your run method can't work, because you try to use tfile immediately afer showing the frame, there's no way you can have clicked and set the file reference that fast :)
The easy answer is : Put afile and tfile as class member :
private javax.swing.JLabel aname;
private javax.swing.JButton audio;
private javax.swing.JButton begin;
private javax.swing.JButton text;
private javax.swing.JLabel tname;
private File afile; // put at bottom of class
private File tfile;
The better solution is to have another class to separate your date manipulation (model) from your view (JFrame)