I want to add textfields dynamically on the click of a button but the value to be fetched and the button are in one class and the panel where i want to add the textboxes and sliders adjacent to the are in a different class. Code is -
public class TipSplitting extends JPanel
JLabel lblNoOfGuests = new JLabel("No. Of guests");
lblNoOfGuests.setBounds(10, 26, 95, 14);
add(lblNoOfGuests);
private JTextField noofguests = new JTextField();
noofguests.setBounds(179, 23, 86, 20);
add(noofguests);
noofguests.setColumns(10);
JButton btnTiptailoring = new JButton("TipTailoring");
btnTiptailoring.setBounds(117, 286, 89, 23);
add(btnTiptailoring);
public class TipTailoring extends JPanel {}
In this class I need to create the text fields dynamically according to the no. entered. In the variable noofguests and the click of the button in the previous class.
I can't really see what the problem, but here some simple demo code of what you describe.
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class TestDynamicallyAddedTextFields {
private void initUI() {
JFrame frame = new JFrame(TestDynamicallyAddedTextFields.class.getSimpleName());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPanel textfieldContainerPanel = new JPanel();
textfieldContainerPanel.setLayout(new GridBagLayout());
JLabel nrOfGuests = new JLabel("Nr. of guests");
final JFormattedTextField textfield = new JFormattedTextField();
textfield.setValue(Integer.valueOf(1));
textfield.setColumns(10);
JButton add = new JButton("Add");
add.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
if (textfield.getValue() != null) {
addTextFieldsToPanel((Integer) textfield.getValue(), textfieldContainerPanel);
}
}
});
JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEADING));
panel.add(nrOfGuests);
panel.add(textfield);
panel.add(add);
frame.add(panel, BorderLayout.NORTH);
frame.add(new JScrollPane(textfieldContainerPanel));
frame.setSize(300, 600);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
protected void addTextFieldsToPanel(Integer value, JPanel textfieldContainerPanel) {
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.gridheight = 1;
for (int i = 0; i < value; i++) {
textfieldContainerPanel.add(new JTextField(20), gbc);
}
textfieldContainerPanel.revalidate();
textfieldContainerPanel.repaint();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new TestDynamicallyAddedTextFields().initUI();
}
});
}
}
And the result:
Related
Hello I found a Projekt on yt where you can search for a keyword and it will show all the websites it found on google. And right now I am trying to revive the keyword the user put in the textfield but it isn't working. It does not find the textfield (tf1) I made, but I don't know what I did wrong. Thanks in advance!
here's my code:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
public class Main implements ActionListener {
public static void main(String[] args) {
int frameWidth = 600;
int frameHeight = 600;
JFrame f = new JFrame();
JLabel l1 = new JLabel();
JTextField tf1 = new JTextField();
JButton b1 = new JButton();
f.getContentPane().setBackground(Color.PINK);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setResizable(false);
f.setSize(frameWidth, frameHeight);
f.setTitle("Search");
f.setLocationRelativeTo(null);
f.setLayout(new FlowLayout(FlowLayout.CENTER,10,10));
f.add(l1);
f.add(tf1);
f.add(b1);
l1.setText("Enter Keywords");
tf1.setPreferredSize(new Dimension(200, 20));
tf1.revalidate();
b1.setText("Search");
b1.addActionListener(new Main());
f.setVisible(true);
// ArrayList<WebCrawler> bots = new ArrayList<>();
// bots.add(new WebCrawler("", 1));
// bots.add(new WebCrawler("", 2));
// bots.add(new WebCrawler("", 3));
// for(WebCrawler w : bots) {
// try {
// w.getThread().join();
//
// }catch(InterruptedException e) {
// e.printStackTrace();
// }
// }
}
#Override
public void actionPerformed(ActionEvent e) {
String keyword = tf1.getText(); //Here it does not find the tf I made
System.out.println(keyword); //just for confirmation
}
}
You have a reference issue.
tf1 is declared as a local variable within main, which makes it inaccessible to any other method/context. Add into the fact that main is static and you run into another problem area.
The simple solution would be to make tf1 a instance field. This would be further simplified if you grouped your UI logic into a class, for example...
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
public class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frame = new JFrame();
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private JLabel label;
private JTextField textField;
private JButton searchButton;
public TestPane() {
setBorder(new EmptyBorder(32, 32, 32, 32));
setBackground(Color.PINK);
setLayout(new GridBagLayout());
label = new JLabel("Enter Keywords: ");
textField = new JTextField(20);
searchButton = new JButton("Search");
GridBagConstraints gbc = new GridBagConstraints();
gbc.insets = new Insets(8, 8, 8, 8);
gbc.gridx = 0;
gbc.gridy = 0;
add(label, gbc);
gbc.gridx++;
add(textField, gbc);
gbc.gridy++;
gbc.gridx = 0;
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(searchButton, gbc);
ActionListener listener = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
String text = textField.getText();
JOptionPane.showMessageDialog(TestPane.this, "You want to search for: " + text);
}
};
textField.addActionListener(listener);
searchButton.addActionListener(listener);
}
}
}
This is basic Java 101. You might find something like What is the difference between a local variable, an instance field, an input parameter, and a class field? of help
I'm trying to code an app using JFrame. But I have encountered an issue when trying to check if the window is full screen or not. I want my button to be in the same position when it's full and half screen. Here's my code.
package App.Gui;
import java.awt.Dimension;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;
import App.Gui.Event.ExitEvent;
public class WindowSettings {
private final static ImageIcon imageIcon = new ImageIcon("C:\\Users\\zeesh\\FirstApp\\src\\image\\Untitled.png");
public static void setWindow() {
JFrame frame = new JFrame("Debug Configurations");
JPanel panel = new JPanel();
frame.getContentPane();
JButton button = new JButton("X");
Dimension size = button.getPreferredSize();
button.setBounds(1125, 20, 50, 50);
button.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
ExitEvent.exit();
}
});
panel.setLayout(null);
panel.add(button);
panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.add(panel);
frame.setIconImage(imageIcon.getImage());
frame.setSize(1200, 750);
frame.setVisible(true);
}
}
Make use of appropriate layouts, for example
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FontMetrics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frame = new JFrame();
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new BorderLayout());
JButton button = new SquareButton("X");
button.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
System.out.println("Hello");
}
});
JPanel topPane = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.EAST;
gbc.weightx = 1;
gbc.insets = new Insets(20, 50, 20, 50);
topPane.add(button, gbc);
add(topPane, BorderLayout.NORTH);
JPanel contentPane = new JPanel(new GridBagLayout());
contentPane.add(new JLabel("Stuff goes here"));
add(contentPane);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(1200, 750);
}
}
class SquareButton extends JButton {
SquareButton(String s) {
super(s);
}
#Override
public Dimension getPreferredSize() {
FontMetrics fm = getFontMetrics(getFont());
int stringWidth = fm.stringWidth(getText());
int stringHeight = fm.getHeight();
int size = Math.max(stringHeight, stringWidth);
return new Dimension(size + 22, size + 22);
}
}
}
See Laying Out Components Within a Container for more details
But, wait, you want to overlap the button over the top of the content? Well, that's not that hard...
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FontMetrics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frame = new JFrame();
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
JButton button = new SquareButton("X");
button.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
System.out.println("Hello");
}
});
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.NORTHEAST;
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.insets = new Insets(20, 50, 20, 50);
add(button, gbc);
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.fill = GridBagConstraints.BOTH;
JPanel contentPane = new JPanel(new GridBagLayout());
contentPane.setBackground(Color.MAGENTA);
contentPane.add(new JLabel("Stuff goes here"));
add(contentPane, gbc);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(1200, 750);
}
}
class SquareButton extends JButton {
SquareButton(String s) {
super(s);
}
#Override
public Dimension getPreferredSize() {
FontMetrics fm = getFontMetrics(getFont());
int stringWidth = fm.stringWidth(getText());
int stringHeight = fm.getHeight();
int size = Math.max(stringHeight, stringWidth);
return new Dimension(size + 22, size + 22);
}
}
}
the JLabel's name is set to an int which changes as the user modifies the number, i tried label.revalidate and Label.repaint after the user changes the int value. i have seen in similar questions people suggest creating a new jlabel everytime, but im wondering if there is a simpler way? the code is very long so i will summerize when needed.
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class officia {
static JFrame Frame;
static JPanel Panel;
static JTextField healthPlace;
static String health="0";
static JButton begin;
static JLabel heart;
static int loop;
public static void main(String[] args) {
Panel = new JPanel();
Frame = new JFrame();
Frame.setSize(500,1000);
Frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Frame.add(Panel);
Panel.setLayout(null);
//adds panel and frame
healthPlace = new JTextField();
healthPlace.setBounds(170, 130, 165, 25);
Panel.add(healthPlace);
begin = new JButton("Begin");
begin.setBounds(217, 185, 70, 25);
Panel.add(begin);
while(loop==1)
loop=0;
heart = new JLabel(health);
heart.setBounds(150, -85, 500, 500);
Panel.add(heart);
Frame.setVisible(true);
//inputs gui's
ActionListener beginPressed = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
health = healthPlace.getText();
loop=1;
}
};
begin.addActionListener(beginPressed);
}
}
You're working in a event driven environment, that is, something happens and you respond to it.
This means, you're while-loop is ill-conceived and is probably the source of your issue. How can the ActionListener for the button be added when the loop is running, but you seem to using the ActionListener to exit the loop...
I modified you code slightly, so when you press the button, it will update the label.
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class officia {
static JFrame Frame;
static JPanel Panel;
static JTextField healthPlace;
static String health = "0";
static JButton begin;
static JLabel heart;
static int loop;
public static void main(String[] args) {
Panel = new JPanel();
Frame = new JFrame();
Frame.setSize(500, 1000);
Frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Frame.add(Panel);
Panel.setLayout(null);
//adds panel and frame
healthPlace = new JTextField();
healthPlace.setBounds(170, 130, 165, 25);
Panel.add(healthPlace);
begin = new JButton("Begin");
begin.setBounds(217, 185, 70, 25);
Panel.add(begin);
// This is ... interesting, but a bad idea
// while (loop == 1) {
// loop = 0;
// }
heart = new JLabel(health);
heart.setBounds(150, -85, 500, 500);
Panel.add(heart);
Frame.setVisible(true);
//inputs gui's
ActionListener beginPressed = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
health = healthPlace.getText();
loop ++;
heart.setText(Integer.toString(loop));
}
};
begin.addActionListener(beginPressed);
}
}
JLabel#setText is what's known as a stateful property, that is, it will trigger an update that will cause it to be painted, so, if it's not updating, you're doing something wrong.
Possible runnable example (of what I think you want to do)
You're working a very rich UI framework. One if it's, many, features, is the layout management framework, something you should seriously take the time to learn to understand and use.
See Laying Out Components Within a Container for more details.
Below is a relatively simple example which shows one way you might "swicth" between views based on a response to a user input
import java.awt.CardLayout;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frame = new JFrame();
frame.add(new BasePane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class BasePane extends JPanel {
private CardLayout cardLayout;
public BasePane() {
cardLayout = new CardLayout();
setLayout(cardLayout);
StartPane startPane = new StartPane(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
cardLayout.show(BasePane.this, "HeartPane");
}
});
HeartPane heartPane = new HeartPane();
add(startPane, "StartPane");
add(heartPane, "HeartPane");
}
}
public class StartPane extends JPanel {
public StartPane(ActionListener actionListener) {
setBorder(new EmptyBorder(10, 10, 10, 10));
setLayout(new GridBagLayout());
JButton start = new JButton("Begin");
add(start);
start.addActionListener(actionListener);
}
}
public class HeartPane extends JPanel {
private JTextField heartTextField;
private JLabel heartLabel;
public HeartPane() {
setBorder(new EmptyBorder(10, 10, 10, 10));
setLayout(new GridBagLayout());
heartLabel = new JLabel("Heart");
heartTextField = new JTextField(10);
add(heartLabel);
add(heartTextField);
}
}
}
I feel as beginner I may have bitten off too much in regards to application building. That said, I am working on developing an application for a friend that will have prompts where each JPanel will provide fields to create an object to be used later. What I would like to have happen is that when the panel loads, it displays one object creation panel and a button to dynamically add a new panel if the user wants to make multiples (the plus button would add the new panel).
I have drawn up something in paint to illustrate this:
By my very limited understanding, I can create a panel to hold these sub-panels, and then add a action listener to the '+' button to create new panels. The only way I could think to implement this is to create a constructor for the panel I want to add. Is this possible? Let me show you what I have:
package com.company;
import java.awt.*;
import javax.swing.*;
/**
* Created by Travis on 3/1/2015.
*/
public class MainSnakeGui extends JFrame{
protected int panelCount;
//row 1
JPanel row1 = new JPanel();
JLabel splitSnakeLabel = new JLabel("Create a Split Snake", JLabel.CENTER);
//row 2
JPanel row2 = new JPanel();
JButton addButton = new JButton("+");
public MainSnakeGui() {
super("Snake Channels");
setSize(550, 400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridLayout layout = new GridLayout(5, 1, 10, 10);
setLayout(layout);
FlowLayout layout1 = new FlowLayout(FlowLayout.CENTER, 10, 10);
row1.setLayout(layout1);
row1.add(splitSnakeLabel);
add(row1);
GridLayout layout2 = new GridLayout(1, 2, 10, 10);
row2.setLayout(layout2);
row2.add(addButton);
MainSnakeConstructor snakePanel = new MainSnakeConstructor();
row2.add(snakePanel);
add(row2);
setVisible(true);
}
public static void setLookAndFeel () {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
} catch (Exception e) {
}
}
public static void main(String[] arg) {
MainSnakeGui.setLookAndFeel();
MainSnakeGui frame = new MainSnakeGui();
}
}
Here is the constructor:
package com.company;
import javax.swing.*;
import java.awt.*;
/**
* Created by Travis on 3/1/2015.
*/
public class MainSnakeConstructor extends JFrame {
public MainSnakeConstructor () {
JPanel splitSnakeRow = new JPanel();
JLabel snakeNameLabel = new JLabel("Snake Name");
JLabel channelCountLabel = new JLabel("Channel Count");
JCheckBox artistSuppliedCheckBox = new JCheckBox("Artist Supplied?");
JTextField snakeNameTextField = new JTextField(30);
JTextField channelCountTextField = new JTextField(3);
GridLayout layout = new GridLayout(3,2,10,10);
splitSnakeRow.setLayout(layout);
splitSnakeRow.add(snakeNameLabel);
splitSnakeRow.add(channelCountLabel);
splitSnakeRow.add(artistSuppliedCheckBox);
splitSnakeRow.add(snakeNameTextField);
splitSnakeRow.add(channelCountTextField);
add(splitSnakeRow);
}
}
Think about it differently. You want a button that allows you to add new panels, so you really only need a single button.
From there, you need some kind common panel which provides the functionality you want to the user (the creation panel). Then, when the user clicks the add button, you create a new creation panel and add it to the container been used to display them, for example...
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
JButton btnAdd = new JButton("+");
setLayout(new BorderLayout());
JPanel buttons = new JPanel(new FlowLayout(FlowLayout.LEFT));
buttons.add(btnAdd);
add(buttons, BorderLayout.NORTH);
JPanel content = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.weighty = 1;
content.add(new JPanel(), gbc);
add(new JScrollPane(content));
btnAdd.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
CreationPane pane = new CreationPane();
int insertAt = Math.max(0, content.getComponentCount() - 1);
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
content.add(pane, gbc, insertAt);
content.revalidate();
content.repaint();
}
});
}
#Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
public static class CreationPane extends JPanel {
private static int count;
public CreationPane() {
setLayout(new GridBagLayout());
add(new JLabel("Make it so " + (count++)));
setBorder(new CompoundBorder(new LineBorder(Color.BLACK), new EmptyBorder(10, 10, 10, 10)));
}
}
}
Now having done all that, I prefer the VerticalLayout manager from SwingLabs, SwingX library, which basically does the same thing...
package bt;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class login extends javax.swing.JFrame implements ActionListener, javax.swing.RootPaneContainer {
private static final long serialVersionUID = 1L;
private JTextField TUserID=new JTextField(20);
private JPasswordField TPassword=new JPasswordField(20);
protected int role;
public JButton bLogin = new JButton("continue");
private JButton bCancel = new JButton("cancel");
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new login().createAndShowGUI();
}
});
}
public void createAndShowGUI() {
ImageIcon icon = new ImageIcon("");
JLabel l = new JLabel();
JLabel l2 = new JLabel("(2011)");
l2.setFont(new Font("Courier New", Font.BOLD, 10));
l.setIcon(icon);
JLabel LUserID=new JLabel("Your User ID: ");
JLabel LPassword=new JLabel("Your Password: ");
TUserID.addActionListener(this);
TPassword.addActionListener(this);
TUserID.setText("correct");
TPassword.setEchoChar('*');
TPassword.setText("correct");
bLogin.setOpaque(true);
bLogin.addActionListener(this);
bCancel.setOpaque(true);
bCancel.addActionListener(this);
JFrame f = new JFrame("continue");
f.setUndecorated(true);
f.setSize(460,300);
AWTUtilitiesWrapper.setWindowOpaque(f, false);
AWTUtilitiesWrapper.setWindowOpacity(f, ((float) 80) / 100.0f);
Container pane = f.getContentPane();
pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS) );
pane.setBackground(Color.BLACK);
Box box0 = Box.createHorizontalBox();
box0.add(Box.createHorizontalGlue());
box0.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
box0.add(l);
box0.add(Box.createRigidArea(new Dimension(100, 0)));
pane.add(box0);
Box box = Box.createHorizontalBox();
box.add(Box.createHorizontalGlue());
box.setBorder(BorderFactory.createEmptyBorder(10, 20, 20, 100));
box.add(Box.createRigidArea(new Dimension(100, 0)));
box.add(LUserID);
box.add(Box.createRigidArea(new Dimension(32, 0)));
box.add(TUserID);
LUserID.setMaximumSize( LUserID.getPreferredSize() );
TUserID.setMaximumSize( TUserID.getPreferredSize() );
pane.add(box);
Box box2 = Box.createHorizontalBox();
box2.add(Box.createHorizontalGlue());
box2.setBorder(BorderFactory.createEmptyBorder(10, 20, 20, 100));
box2.add(Box.createRigidArea(new Dimension(100, 0)));
box2.add(LPassword,LEFT_ALIGNMENT);
box2.add(Box.createRigidArea(new Dimension(15, 0)));
box2.add(TPassword,LEFT_ALIGNMENT);
LPassword.setMaximumSize( LPassword.getPreferredSize() );
TPassword.setMaximumSize( TPassword.getPreferredSize() );
pane.add(box2);
Box box3 = Box.createHorizontalBox();
box3.add(Box.createHorizontalGlue());
box3.setBorder(BorderFactory.createEmptyBorder(20, 20, 0, 100));
box3.add(bLogin);
box3.add(Box.createRigidArea(new Dimension(10, 0)));
box3.add(bCancel);
pane.add(box3);
f.setLocation(450,300);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setBackground(Color.BLACK);
f.setVisible(true);
}
#Override
public void actionPerformed(ActionEvent evt) {
String TBUsername = TUserID.getText();
Object src = evt.getSource();
char[] CHPassword1 = TPassword.getPassword();
String TBPassword = String.valueOf(CHPassword1);
login mLogin = this;
if (src==bLogin) {
if (authenticate(TBUsername,TBPassword)) {
System.out.println(this);
exitApp(this);
} else {
exitApp(this);
}
} else if (src==bCancel) {
exitApp(mLogin);
}
}
public void exitApp(JFrame mlogin) {
mlogin.setVisible(false);
}
private boolean authenticate(String uname, String pword) {
if ((uname.matches("correct")) && (pword.matches("correct"))) {
new MyJFrame().createAndShowGUI();
return true;
}
return false;
}
}
and MyJFrame.java
package bt;
import java.awt.Color;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class MyJFrame extends javax.swing.JFrame implements ActionListener {
private static final long serialVersionUID = 2871032446905829035L;
private JButton bExit = new JButton("Exit (For test purposes)");
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new MyJFrame().createAndShowGUI();
}
});
}
public void createAndShowGUI() {
JPanel p = new JPanel();
p.setBackground(Color.black);
ImageIcon icon = new ImageIcon("");
JLabel l = new JLabel("(2011)"); //up to here
l.setIcon(icon);
p.add(l);
p.add(bExit);
bExit.setOpaque(true);
bExit.addActionListener(this);
JFrame f = new JFrame("frame");
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
f.setUndecorated(true);
p.setOpaque(true);
f.getContentPane().add(p);
f.pack();
f.setSize(1000,600);
Container pane=f.getContentPane();
pane.setLayout(new GridLayout(0,1) );
//p.setPreferredSize(200,200);
AWTUtilitiesWrapper.setWindowOpaque(f, false);
AWTUtilitiesWrapper.setWindowOpacity(f, ((float) 90) / 100.0f);
f.setLocation(300,300);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
#Override
public void actionPerformed(ActionEvent evt) {
Object src = evt.getSource();
if (src==bExit) {
System.exit(0);
}
}
}
I cannot get the exitApp() method to work, although it worked before I expanded on my code, I've been trying for hours to get it to work but no avail! The login button suceeds in opening the new frame but will not close the preious(login) frame. It did earlier till I added the validation method etc ....
Create only one JFrame as parent and for another Top-level Containers create only once JDialog (put there JPanel as base), and re-use that for another Action, then you only to remove all JComponents from Base JPanel and add there another JPanel
don't forget for as last lines after switch betweens JPanels inside Base JPanel
revalidate();
repaint();
you can pretty to forgot about that by implements CardLayout