How to close a jframe without closing the main program - java

I'm creating a program to keep track of a list of DVD's. On the main page I have set up 2 JButtons. When the user clicks the one that says new, a new JFrame from another class comes up with fields to enter information about a new DVD. I'm trying to make a cancel button on this second frame work so that when one clicks the cancel button, it brings back up the main GUI and closes the new entry GUI. Code is below, I cant figure out how to do it.
Main GUI page
package dvdlibrary;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
public class bootPage extends javax.swing.JFrame {
/** Creates new form bootPage */
public bootPage() {
initComponents();
}
#SuppressWarnings("unchecked")
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
jLabel1.setText("DVD Library");
getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(168, 11, -1, -1));
jLabel2.setText("What would you like to do today?");
getContentPane().add(jLabel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(113, 70, -1, -1));
jButton1.setText("Create Record");
jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jButton1MouseClicked(evt);
}
});
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
getContentPane().add(jButton1, new org.netbeans.lib.awtextra.AbsoluteConstraints(50, 135, -1, -1));
jButton2.setText("View Library");
jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jButton2MouseClicked(evt);
}
});
getContentPane().add(jButton2, new org.netbeans.lib.awtextra.AbsoluteConstraints(224, 135, 111, -1));
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
}
private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {
if(evt.getSource()== jButton1)
dvdlibrary.createEntry.createE();
}
private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {
if(evt.getSource()== jButton2)
dvdlibrary.movieChooser.movChoo();
}
public static void bootP() {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new bootPage().setVisible(true);
new bootPage().setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
}
Create Entry page
package dvdlibrary;
public class createEntry extends javax.swing.JFrame {
public createEntry() {
initComponents();
}
#SuppressWarnings("unchecked")
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("Title");
jLabel2.setText("Genre");
jLabel3.setText("Length");
jLabel4.setText("Rating");
jLabel5.setText("Description");
jLabel6.setText("Year");
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
jButton1.setText("Input");
jButton2.setText("Load");
jButton3.setText("Save");
jButton4.setText("Cancel");
jButton4.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jButton4MouseClicked(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(19, 19, 19)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel5)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 174, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3)
.addComponent(jLabel4)
.addComponent(jLabel6))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 32, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField2)
.addComponent(jTextField4)
.addComponent(jTextField3, javax.swing.GroupLayout.DEFAULT_SIZE, 133, Short.MAX_VALUE)))))
.addGroup(layout.createSequentialGroup()
.addGap(51, 51, 51)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(124, 124, 124)
.addComponent(jButton1))
.addGroup(layout.createSequentialGroup()
.addGap(45, 45, 45)
.addComponent(jButton4)
.addGap(18, 18, 18)
.addComponent(jButton2)
.addGap(18, 18, 18)
.addComponent(jButton3)))
.addGap(23, 23, 23))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(38, 38, 38)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton1))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(26, 26, 26)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(37, 37, 37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(39, 39, 39)
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton3)
.addComponent(jButton2)
.addComponent(jButton4)))
.addContainerGap())
);
pack();
}
private void jButton4MouseClicked(java.awt.event.MouseEvent evt) {
}
public static void createE() {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new createEntry().setVisible(true);
}
});
}
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
// End of variables declaration
}


I think you can also use DISPOSE_ON_CLOSE:
DISPOSE_ON_CLOSE (the default for
JInternalFrame)
Hide and dispose of the window when the user closes it. This removes
the window from the screen and frees up any resources used by it.


Did you read the API to find out other values for the setDefaultCloseOperation(...) method?
You can use:
DISPOSE_ON_CLOSE - the frame will close. If this is the last open frame for the application then the JVM will terminate as well
HIDE_ON_CLOSE - the frame is just set to invisible.
when user clicks the one that says new a new jframe from another class comes up with fields to enter information about a new dvd.
The real problem with your program is that you are using a frame as the popup window. You should be using a modal JDialog. An application should only ever have a single JFrame with multiple dialogs to gather additional information. A JDialog does not allow you to use EXIT_ON_CLOSE.


frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE)


If this is the case, make sure to use setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); on your JFrame when initializing, not setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DISPOSE_ON_CLOSE will terminate your application when the last JFrame
is closed. EXIT_ON_CLOSE will terminate your application as soon as
that JFrame is closed. HIDE_ON_CLOSE (default) will not terminate
your application even if all JFrames are hidden.


I had a similar problem and used jFrameInstanceVariable.setVisible(false); as the action that occured when I hit my CANCEL button. But every time I clicked the button that popped up the JFrame afterward, all the old content was still there in addition to the new content created from pressing the button.
I fixed this by making a new instance of JFrame every time the button is pressed that pops up the JFrame.


To hide the window without it actually closing the program, do:
f.setVisible(false);


If you just hide the program, using HIDE_ON_CLOSE or set.Visible(false), that is not a very good choice, because if you do something larger with more frames, the hidden frames will still be running, slowing down computer performance. The way, as other have said, is instead of using setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);, which will terminate the program when you click "X, closing all of the frames, use the following:
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);


If your using a button like I think you said you were
this.dispose();
will do the trick..


Try putting this.dispose(); inside the cancel button method.

Related

How do i add a message on a JTextArea that disappears when clicked or selected?

my question is very simple but I but i don't know what it is
I have a program, in java, like so
and I want to add on the JTextArea's a short message that disappeares when clicked or selected, like when you login on facebook
The JTextArea i want is for example the one below the "Startind Date:" the JTextArea is called textAreaStartindDate
this is my code so far. i used the netbeans built in design option
public class CreateEventUI extends javax.swing.JFrame {
private static final long serialVersionUID = 7526472295622776147L;
//GUARDAR EVENTOS EM REGISTOEVENTOS
/**
* Creates new form CriarEventoUI
*/
public CreateEventUI() {
super("Create an Event");
setResizable(false);
initComponents();
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setVisible(true);
}
/**
* 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() {
labelChooseTypeOfEvent = new javax.swing.JLabel();
comboBoxTypeOfEvent = new javax.swing.JComboBox<>();
labelInsertTypeOfData = new javax.swing.JLabel();
labelTitle = new javax.swing.JLabel();
labelDescription = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
textAreaDescription = new javax.swing.JTextArea();
textFieldTitle = new javax.swing.JTextField();
labelStartingDate = new javax.swing.JLabel();
labelStartSubmissionDate = new javax.swing.JLabel();
labelEndDate = new javax.swing.JLabel();
labelEndSubmissionDate = new javax.swing.JLabel();
labelPlace = new javax.swing.JLabel();
textFieldPlace = new javax.swing.JTextField();
buttonConfirm = new javax.swing.JButton();
buttonCancel = new javax.swing.JButton();
textFieldStartingDate = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
labelChooseTypeOfEvent.setText("Choose the type of event");
comboBoxTypeOfEvent.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Congress" , "Exposition"}));
labelInsertTypeOfData.setText("insert the data");
labelTitle.setText("Title");
labelDescription.setText("Description");
textAreaDescription.setColumns(20);
textAreaDescription.setRows(5);
jScrollPane1.setViewportView(textAreaDescription);
labelStartingDate.setText("Starting date:");
labelStartSubmissionDate.setText("starting date for submissions:");
labelEndDate.setText("End date:");
labelEndSubmissionDate.setText("Ending date for submissions:");
labelPlace.setText("place");
buttonConfirm.setText("Confirm");
buttonConfirm.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonConfirmActionPerformed(evt);
}
});
buttonCancel.setText("Cancel");
buttonCancel.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonCancelActionPerformed(evt);
}
});
textFieldStartingDate.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textFieldStartingDateActionPerformed(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()
.addGap(25, 25, 25)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(labelInsertTypeOfData)
.addGroup(layout.createSequentialGroup()
.addComponent(labelChooseTypeOfEvent)
.addGap(18, 18, 18)
.addComponent(comboBoxTypeOfEvent, javax.swing.GroupLayout.PREFERRED_SIZE, 101, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addComponent(labelTitle)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(textFieldTitle))
.addComponent(labelDescription)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 222, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(labelPlace)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(textFieldPlace)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(labelStartSubmissionDate)
.addComponent(labelStartingDate)
.addComponent(textFieldStartingDate, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(40, 40, 40)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(labelEndDate)
.addComponent(labelEndSubmissionDate)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(173, 173, 173)
.addComponent(buttonConfirm)
.addGap(87, 87, 87)
.addComponent(buttonCancel)))))
.addContainerGap(13, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(28, 28, 28)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(labelChooseTypeOfEvent)
.addComponent(comboBoxTypeOfEvent, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(23, 23, 23)
.addComponent(labelInsertTypeOfData)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(labelTitle)
.addComponent(textFieldTitle, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(labelDescription)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 92, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(labelStartingDate)
.addComponent(labelEndDate))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(52, 52, 52)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(labelStartSubmissionDate)
.addComponent(labelEndSubmissionDate))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(textFieldStartingDate, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(labelPlace)
.addComponent(textFieldPlace, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(buttonConfirm)
.addComponent(buttonCancel))
.addContainerGap(17, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void buttonConfirmActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void buttonCancelActionPerformed(java.awt.event.ActionEvent evt) {
dispose();
}
private void textFieldStartingDateActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
// Variables declaration - do not modify
private javax.swing.JButton buttonCancel;
private javax.swing.JButton buttonConfirm;
private javax.swing.JComboBox<String> comboBoxTypeOfEvent;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JLabel labelChooseTypeOfEvent;
private javax.swing.JLabel labelDescription;
private javax.swing.JLabel labelEndDate;
private javax.swing.JLabel labelEndSubmissionDate;
private javax.swing.JLabel labelInsertTypeOfData;
private javax.swing.JLabel labelPlace;
private javax.swing.JLabel labelStartSubmissionDate;
private javax.swing.JLabel labelStartingDate;
private javax.swing.JLabel labelTitle;
private javax.swing.JTextArea textAreaDescription;
private javax.swing.JTextField textFieldPlace;
private javax.swing.JTextField textFieldStartingDate;
private javax.swing.JTextField textFieldTitle;
// End of variables declaration
}
without using the obvious

In general you can use an ActionListener or a MouseListener.
For you did not post any code, we cannot help you out exactly. But maybe this post helps:
Onclick for TextField

Add a default text when initializing the JTextArea. Then add a FocusListener. like below:
textAreaDescription = new javax.swing.JTextArea("Description");
//jScrollPane1.setViewportView(textAreaDescription);
textAreaDescription.addFocusListener(new FocusListener() {
public void focusGained(FocusEvent e) {
textAreaDescription.setText("");
}
public void focusLost(FocusEvent e) {
textAreaDescription.setText("Description");
}
});

JApplet open new window when click on jButton3

this is my Applet so far, i can´t figure out how to open a new window (JFrame), when i click on "Register" JButton, i want to open a new window "Register Form Window" is to register all users (User Name, User Password, Age, etc).
LogIn.java
package intranetmailingsystem;
import java.lang.reflect.InvocationTargetException;
import javax.swing.JFrame;
public class LogIn extends javax.swing.JApplet{
#Override
public void init() {
try {
java.awt.EventQueue.invokeAndWait(this::initComponents);
} catch (InterruptedException | InvocationTargetException ex) {
}
}
#SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jLabel1.setFont(new java.awt.Font("Tahoma", 0, 24)); // NOI18N
jLabel1.setText("Intranet Mailing System");
jLabel2.setText("User name");
jLabel3.setText("Password");
jTextField2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField2ActionPerformed(evt);
}
});
jButton1.setText("LogIn");
jButton2.setText("Clear");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setText("Register");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(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(35, 35, 35)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, 75, Short.MAX_VALUE)
.addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(36, 36, 36)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField1)
.addComponent(jTextField2, javax.swing.GroupLayout.DEFAULT_SIZE, 128, Short.MAX_VALUE)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(layout.createSequentialGroup()
.addGap(53, 53, 53)
.addComponent(jButton1)
.addGap(48, 48, 48)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton3))
.addGroup(layout.createSequentialGroup()
.addGap(68, 68, 68)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 283, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addContainerGap(49, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(22, 22, 22)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(38, 38, 38)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 64, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2)
.addComponent(jButton3))
.addGap(65, 65, 65))
);
}// </editor-fold>
private void jTextField2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// need to add some code here !
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
{
jTextField1.setText("");
jTextField2.setText("");
}
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
private void dispose() {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
InternetMailingSystem.java :
package intranetmailingsystem;
public class IntranetMailingSystem
{
public static void main(String[] args)
{
// TODO code application logic here
}
}
Please check this:
Image

You have to create another window. So if you create another JFrame class call Register you would add this in your code.
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
Register menu = new Register();
menu.setVisible(true);
}

How to "save" my program?

Hi guys I'm currently working on a kind of "dungeon crawler" game and i need some help with saving my program. I would like for my jFrame to save(all of my entered text)so that when i close the program and open it back up from my Desktop it will have my entered text and everything i have changed still in the program. I'm confused as to how to save and am hoping for some help. Thanks ahead of time for all of your time, anwsers, links, examples, and advice. To be clear i am new to this and only have been coding for about 5 days now and i still use the Netbeans jFrame "Design" feature to generate most of the code for me. Below I've posted the code for my second Jframe. Feel free to copy and paste this code in your netbeans IDE. Thanks :).
NOTE: in case needing the names for my other Jframes.
"Character" is my second jFrame
"MainClass" is my java app
"MainGamePanel" is my third JFrame
NOTE:some buttons may not work because this is not all of my jFrames
package ddsheet; //This is the code for my jFrame named Character
import java.nio.file.Files;
import javax.swing.JFileChooser;
public class Character extends javax.swing.JFrame {
public Character() {
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() {
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jLabel10 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jLabel11 = new javax.swing.JLabel();
nameValue = new javax.swing.JLabel();
jLabel13 = new javax.swing.JLabel();
jLabel14 = new javax.swing.JLabel();
strValue = new javax.swing.JLabel();
int1Value = new javax.swing.JLabel();
dexValue = new javax.swing.JLabel();
vitValue = new javax.swing.JLabel();
hpValue = new javax.swing.JLabel();
mpValue = new javax.swing.JLabel();
stamValue = new javax.swing.JLabel();
jProgressBar1 = new javax.swing.JProgressBar();
jLabel12 = new javax.swing.JLabel();
Class = new javax.swing.JLabel();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Character"));
jLabel1.setText("Name:");
jLabel2.setText("Level:");
jLabel3.setText("Gold:");
jLabel4.setText("Str:");
jLabel5.setText("Int:");
jLabel6.setText("Dex:");
jLabel7.setText("Vit:");
jLabel8.setText("Hp:");
jLabel9.setText("Mp");
jLabel10.setText("Stam:");
jButton1.setText("Main Menu");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
jLabel11.setText("Inventory");
nameValue.setText("Hiroshema");
jLabel13.setText("1");
jLabel14.setText("550");
strValue.setText("0");
int1Value.setText("0");
dexValue.setText("0");
vitValue.setText("0");
hpValue.setText("0");
mpValue.setText("0");
stamValue.setText("0");
jLabel12.setText("EXP:");
Class.setText("Class");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(35, 35, 35))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(nameValue))
.addComponent(jLabel4)
.addComponent(jLabel7)
.addComponent(jLabel9)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(int1Value, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jLabel8)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel6)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 11, Short.MAX_VALUE)
.addComponent(dexValue, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(strValue, javax.swing.GroupLayout.PREFERRED_SIZE, 47, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(vitValue, javax.swing.GroupLayout.PREFERRED_SIZE, 49, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(hpValue, javax.swing.GroupLayout.PREFERRED_SIZE, 48, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(mpValue, javax.swing.GroupLayout.PREFERRED_SIZE, 51, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel3)
.addGap(18, 18, 18)
.addComponent(jLabel14))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(jLabel13)))
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel10)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(stamValue, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 90, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 233, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel11))
.addGap(97, 97, 97))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(Class)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel12)
.addGap(18, 18, 18)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel12))
.addGap(26, 26, 26))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(Class)
.addGap(18, 18, 18)))
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(nameValue)
.addComponent(jLabel11))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jLabel13))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jLabel14))
.addGap(41, 41, 41)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(strValue))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(int1Value))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(dexValue))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel7)
.addComponent(vitValue))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel8)
.addComponent(hpValue))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel9)
.addComponent(mpValue))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel10)
.addComponent(stamValue))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1))
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 283, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jMenu1.setText("File");
jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_E, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem1.setText("Exit");
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem1);
jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem2.setText("Save");
jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem2);
jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
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()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);
pack();
}// </editor-fold>
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
this.dispose();
new MainGamePanel().setVisible(true);
}
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {
}
/**
* #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(Character.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Character.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Character.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Character.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 Character().setVisible(true);
}
});
}
// Variables declaration - do not modify
public static javax.swing.JLabel Class;
public static javax.swing.JLabel dexValue;
public static javax.swing.JLabel hpValue;
public static javax.swing.JLabel int1Value;
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel11;
private javax.swing.JLabel jLabel12;
private javax.swing.JLabel jLabel13;
private javax.swing.JLabel jLabel14;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JPanel jPanel1;
private javax.swing.JProgressBar jProgressBar1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
public static javax.swing.JLabel mpValue;
public static javax.swing.JLabel nameValue;
public static javax.swing.JLabel stamValue;
public static javax.swing.JLabel strValue;
public static javax.swing.JLabel vitValue;
// End of variables declaration
}

another idea is create a separate class containing all the information you need to save.
And use the class as an object in your main class and then save the object like this.
Look into serializing a class (this is called serialization).
public class GameState implements Serializable{
...//game settings and states stored here
}
//inside the main running class
my_settings = GameState();
...
// write object
FileOutputStream fos = new FileOutputStream(path..);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.writeObject( my_settings );
out.close();
fos.close();
//read object
fis = new FileInputStream(path..);
ObjectInputStream ois = new ObjectInputStream(fis);
my_settings = (GameState) ois.readObject();
ois.close();

xml mabye?
I think you may be able to use a FileOutputStream and PrintWriter to create an xml file with data nodes keeping data of the state of everything in the game. to read it back, you might want to use Simple API for XML (SAX). Just an idea.

JPanel not showing [closed]

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Questions concerning problems with code you've written must describe the specific problem — and include valid code to reproduce it — in the question itself. See SSCCE.org for guidance.
Closed 9 years ago.
Improve this question
I need to have an interface ready and with clickable buttons to show all the different windows we have created so far.
Now a teammember of mine has created multiple JFrames for each window we want the user to work with. We're all working in the NetBeans IDE. I'm trying to get a login window to popup and from there on i will be making all the windows show up when a button is clicked which should direct the user to that window.
Here is what we have so far:
(Main)
import java.awt.*;
import javax.swing.*;
public class Corendon {
public static void main(String[] args) {
showLogin();
}
private static void showLogin(){
Login login = new Login();
login.setVisible(true);
login.validate();
}
}
The code in Login.java as requested by a user:
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* #author Daan
*/
public class Login extends javax.swing.JPanel {
/**
* Creates new form Login
*/
public Login() {
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() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jPasswordField1 = new javax.swing.JPasswordField();
jTextField1 = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jLabel1.setIcon(new javax.swing.ImageIcon("C:\\Users\\Daan\\Dropbox\\HvA\\Programming\\Corendon\\corendon.png")); // NOI18N
jLabel2.setText("Username");
jLabel3.setText("Password");
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Dutch", "English" }));
jButton1.setText("Login");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("Cancel");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(31, 31, 31)
.addComponent(jLabel1))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(45, 45, 45)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel3)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(14, 14, 14)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(29, 29, 29)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1))
.addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, 214, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 214, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addContainerGap(22, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap(16, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton2)
.addComponent(jButton1))
.addGap(35, 35, 35))
);
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPasswordField jPasswordField1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
As you can see i'm trying to get the Login window to showup when the user runs the program. But what i'm currently dealing with is the fact that if i set the setVisible parameter to true, it doesn't actually show up. The program will in fact just run for 1 second and than stop.
Is there anything i'm doing wrong here? Also in each of the classes we have not yet created any event handlers. They are only windows with multiple components on them.

JPanel needs to be wrapped inside a Window component such as a JFrame to show up.
Replace your showLogin Method with the following:
Login login = new Login();
JFrame frame = new JFrame();
frame.add(login);
frame.pack();
frame.setVisible(true);

How can I stop a Thread from GUI button?

I was wondering how it was I could stop a Thread from a GUI. I figured that if the thread was made before the buttons were made I would be fine, but I am also trying to put in the JProgressBar so that I can update it. So now I am stuck as of how to do this. If you could help that would be nice.
Thanks in advance!
Code:
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import javax.swing.JOptionPane;
public class mainJFrame extends javax.swing.JFrame {
//set Global variables
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
final int screenH = dim.height, screenW = dim.width;
private volatile boolean isStop = true;
public mainJFrame() {
initComponents();
}
#SuppressWarnings("unchecked")
private void initComponents() {
jProgressBar1 = new javax.swing.JProgressBar();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Zeveso's MD5 Cracker");
setBounds(new java.awt.Rectangle(200, 200, 0, 0));
setResizable(false);
jLabel1.setText("MD5:");
jButton1.setText("Start");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("Stop");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jMenu1.setText("File");
jMenuItem1.setText("Create MD5");
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem1);
jMenuBar1.add(jMenu1);
setJMenuBar(jMenuBar1);
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)
.addComponent(jProgressBar1, javax.swing.GroupLayout.DEFAULT_SIZE, 234, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 191, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addGap(18, 18, 18)
.addComponent(jButton2)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 29, Short.MAX_VALUE)
.addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 22, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
pack();
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
if(isStop == true){
jProgressBar1.setIndeterminate(true);
myMDThread.start();
isStop = false;
}
else{
System.out.println("Already running!");
}
}
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
createMD5 myMD = new createMD5();
String myPass = JOptionPane.showInputDialog(null, "Please put your password!");
myPass = myMD.getMD5(myPass);
JOptionPane.showMessageDialog(null, "MD5: " + myPass);
System.out.println(myPass);
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection stringSelection = new StringSelection(myPass);
clipboard.setContents(stringSelection, null);
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
jProgressBar1.setIndeterminate(false);
isStop = true;
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new mainJFrame().setVisible(true);
}
});
}
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JProgressBar jProgressBar1;
private javax.swing.JTextField jTextField1;
}

There is no safe way to force a thread to stop (read the JavaDoc on the Thread.stop() method for more explanation).
The best way is to call the interrupt method, which is a "cooperative" stop. If the thread is in the middle of an interruptible call then it will throw an InterruptedException. If the thread is compute-intensive then it should periodically check its own interrupt status with Thread.interrupted(), and cleanly exit when requested.

Do you have the source for your thread?
In general, you cannot stop a thread unless you build in the ability to do so. For example, your thread could expose a method like stopProcessing that, when called, sets a flag. Your thread's run method would periodically check this flag to see if it should stop.
If you have a bit of work that doesn't map to this very well, your only real option is to just ignore the Thread, hide the progress bar, and give the illusion that the thread has stopped.

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