Close button in java swing

Example code for adding a close button to Java Swing display

To disable the close button on a JFrame in Java, simply set it to DO_NOTHING_ON_CLOSE. One solution is to set the visibility of the label to false initially and then change it after the button is clicked using lambda syntax for Java 8. Another solution is to add an ActionListener to the button, or create a separate class that implements ActionListener which is considered a better practice.

Display a label after the Button is clicked in Java swing

You can start by hiding the label with a visibility setting of false. Then, once the button is clicked, you can adjust the visibility as shown in label.setVisible(true) .

For instance, consider this example where lambda syntax is utilized in Java 8.

import java.awt.Dimension; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; public class BtnDisabled < public static void main(String[] args) < JFrame frame = new JFrame(""); JLabel label = new JLabel("You and Me"); label.setVisible(false); JPanel panel = new JPanel(); panel.add(label); JButton btn = new JButton("W"); btn.addActionListener(e -> < if (!label.isVisible()) < label.setVisible(true); >>); panel.add(btn); frame.add(panel); frame.setSize(new Dimension(500, 500)); frame.setVisible(true); > > 

Add ActionListener to your button:

wButton.addActionListener(new ActionListener() < public void actionPerformed(ActionEvent e) < //Execute when button is pressed wLabel.setVisible(true); >>); 

In my opinion, it is preferable to create a distinct class that implements ActionListener instead. Nevertheless, the outcome will remain unchanged. I am unsure about the size of your application, but I advise segregating the ActionListeners, such as in a separate class, to enhance the clarity of your code.

public NewJFrame() < initComponents(); jLabel1.setVisible(false); >private void initComponents() < jLabel1 = new javax.swing.JLabel(); jButton1 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jLabel1.setText("jLabel1"); jButton1.setText("jButton1"); jButton1.addActionListener(new java.awt.event.ActionListener() < public void actionPerformed(java.awt.event.ActionEvent evt) < jButton1ActionPerformed(evt); >>);> private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)

The constructor, identified as NewJFrame() , was successful when I implemented the corresponding code.

Java — How to use Exit button in Swing Application?, If you want to create a button which exits the application when the user clicks it, try this: JButton exit = new JButton («exit»); ActionListener al = new ActionListener () < @Override public void actionPerformed (ActionEvent e) < System.exit (0); >>; exit.addActionListener (al); Code sampleActionListener al = new ActionListener() >;Feedback

How to disable close button on a JFrame in Java?

Firstly, we need to generate a frame in order to deactivate the close button.

JFrame frame = new JFrame("Login!");

To disable the close button, set its status using the setDefaultCloseOperation() function and set it to DO_NOTHING_ON_CLOSE.

frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

Here’s a demonstration of how to apply disable close button to a JFrame in Java.

Example

package my; import java.awt.GridLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.SwingConstants; public class SwingDemo < public static void main(String[] args) throws Exception < JFrame frame = new JFrame("Login!"); JLabel label1, label2, label3; frame.setLayout(new GridLayout(2, 2)); label1 = new JLabel("DeptId", SwingConstants.CENTER); label2 = new JLabel("SSN", SwingConstants.CENTER); label3 = new JLabel("Password", SwingConstants.CENTER); JTextField deptid = new JTextField(20); JTextField ssn = new JTextField(20); JPasswordField passwd = new JPasswordField(); passwd.setEchoChar('*'); frame.add(label1); frame.add(label2); frame.add(label3); frame.add(deptid); frame.add(ssn); frame.add(passwd); frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); frame.setSize(550, 400); frame.setVisible(true); >>

The close button is shown in the output, but it is non-functional as we had previously disabled it.

Output

Have the selected radio button to display in text area

Once you have included the JRadioButtons in a ButtonGroup, the selected JRadioButton’s ButtonModel can be obtained by invoking getSelection() on the ButtonGroup. From there, you can retrieve the actionCommand String of the model, which must have been explicitly set for the JRadioButtons. To illustrate, assuming that the ButtonGroup is named buttonGroup:

private void displayActionPerformed(java.awt.event.ActionEvent evt) < // 1st get the ButtonModel for the selected radio button ButtonModel buttonModel = buttonGroup.getSelection(); // if a selection has been made, then model isn't null if (buttonModel != null) < // again actionCommand needs to be set for each JRadioButton String actionCommand = buttonModel.getActionCommand(); // TODO: use actionCommand String as needed >> 

import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import javax.swing.*; @SuppressWarnings("serial") public class RadioEg extends JPanel < private static final String[] RADIO_TEXTS = ; private ButtonGroup buttonGroup = new ButtonGroup(); public RadioEg() < JPanel radioPanel = new JPanel(new GridLayout(0, 1)); for (String radioText : RADIO_TEXTS) < JRadioButton radioButton = new JRadioButton(radioText); radioButton.setActionCommand(radioText); // set this! radioPanel.add(radioButton); // add to JPanel buttonGroup.add(radioButton); // add to button group >JPanel southPanel = new JPanel(); southPanel.add(new JButton(new AbstractAction("GetSelection") < @Override public void actionPerformed(ActionEvent e) < ButtonModel buttonModel = buttonGroup.getSelection(); if (buttonModel != null) < String actionCommand = buttonModel.getActionCommand(); System.out.println("Selected Button: " + actionCommand); >> >)); setLayout(new BorderLayout()); add(radioPanel, BorderLayout.CENTER); add(southPanel, BorderLayout.PAGE_END); > private static void createAndShowGui() < JFrame frame = new JFrame("RadioEg"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().add(new RadioEg()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); >public static void main(String[] args) < SwingUtilities.invokeLater(new Runnable() < public void run() < createAndShowGui(); >>); > > 

Java swing gui close button Code Example, “java swing gui close button” Code Answer’s how to close a jframe in java with an if statement java by Vast Vulture on Jun 17 2020 Comment

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How to Close JFrame on Button Click in Java

Hello, enthusiasts. In this tutorial, we will learn and focus on how to close JFrame on a button click.

Closing JFrame on Button Click in Java

In this tutorial, I will first create a button and then add it to the frame. Then, use an action listener event that will close the frame with the click of the button. I have already discussed how to exit JFrame on close in my earlier post, so please do check it out. I will also be using a different cursor when clicking the button in the JFrame.

Please do read the below posts to get more knowledge on these topics as you will learn more about Java Swing, Java AWT, their uses, JFrame constants to close the frame, creating custom cursors, etc.

Adding a Button to JFrame

Firstly, we create a JFrame in Java using the Java Swing library. We specify the location of the frame and set the visible component to true to display the frame on our screen. Secondly, to create a JButton using the Swing library we first extend our main class to the JFrame class.

Now, we use the JButton class to create a button in Java and name it as “Close JFrame!”. We will now add a hand cursor when we hover over the button. Our main aim now is to close the JFrame by clicking the button. Thus, we will use the ActionListener class to handle the click events of the button.

Let’s see the code snippet:

//Creating a JButton and adding it to the frame //Creating a button with a text JButton button=new JButton("Close JFrame!"); //Setting the cursor to the hand symbol button.setCursor(new Cursor(Cursor.HAND_CURSOR));

Setting the ActionListener Class

The ActionListener class gets notified on click events and is responsible for all the events of the button. It is a part of the Java AWT package. We now initialize the ActionListener class and create a function inside the class for handling all the click events.

We use the frame.dispose() method, which places a request to the garbage collector to free the memory. As a result, it then deallocates the memory and causes the JFrame to close. However, another alternative is to use the System.exit(0) method which terminates the program and hereby closes the JFrame.

Let us see the code:

//Required Imports import javax.swing.*; import java.awt.*; public class CloseJframeByButton extends JFrame < public static void main(String[] args) < //Creating a new Java JFrame with a title JFrame frame = new JFrame("Close JFrame on Button Click"); frame.setLayout(null); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.setBounds(100, 200, 350, 200); //Creating a JButton and adding it to the frame //Creating a button with a text JButton button=new JButton("Close JFrame!"); //Setting the cursor to the hand symbol button.setCursor(new Cursor(Cursor.HAND_CURSOR)); //Setting the action listener for the button to close the frame on click button.addActionListener(event->< frame.dispose(); >); //Adding the objects in the container frame and setting the content pane layer frame.setContentPane(button); frame.setVisible(true); //Displaying the Java frame > >

Thanks for reading!

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Display close button in java swing

Question: Basically, I have somewhere in my main code where this line of code is called This line opens a new JFrame that can basically edit a bunch of information from the main class. The JOptionPane holds jpane that displays information using a GridBagLayout. ComplexOptionPane.java: displays the main JFrame. PlayerEditorPanel.java which holds the JPanel that is displayed in a JOptionPane

Java — is there a way to hide the close button in a swing application?

is there a way to hide the close button in a swing application?

I know I can set JFrame.DO_NOTHING_ON_CLOSE but is there a way to eliminate it completely?

if I write setUndecorated(true) I get
IllegalComponentStateException — the frame is displayable

Using frame.setUndecorated(true) while the frame has already been displayed leads to an error as this is not allowed in the API. Instead, use frame.setUndecorated(true) before you set frame.setVisible(true) . This should solve your error:

IllegalComponentStateException — the frame is displayable

If you are successful, the close button will be hidden.

Java — close window on button click, 1 If you’re already using JFrame.setDefaultCloseOperation (JFrame.DISPOSE_ON_CLOSE), simply calling dispose on the JFrame will close it and exit the JVM (so long as all non-daemon threads have completed of course ;)) – MadProgrammer Oct 2, 2012 at 10:53 Add a comment 1 Answer Sorted by: 4 …

Showing only close button on the JFrame undecorated

I want to know if it is possible to undecorate a JFrame and then show only close button at the top or something similar to that.. Any help will be greatly appreciated. Detail: Actually i am making a project, which is a GUI based software, i have used jdesktoppane in it and i am using JInternalFrames so showing the titlebar on the top is not just suiting me. Is there any way to solve my problem.

Basically, once you remove the frame border, you become responsible for it’s functionality, including moving.

This example basically uses a JPanel to act as a place holder for the «title» pane and uses a BorderLayout to layout out the title and content.

The actual close button is a simple JButton which is using some images to represent the close action. Obviously, this is only going to look right on Windows, these buttons are normal generated by the OS itself. and we don’t have access to that layer.

public class TestUndecoratedFrame < public static void main(String[] args) < new TestUndecoratedFrame(); >public TestUndecoratedFrame() < EventQueue.invokeLater(new Runnable() < @Override public void run() < try < UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); >catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) < >TitlePane titlePane = new TitlePane(); JFrame frame = new JFrame("Testing"); frame.setUndecorated(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout()); ((JComponent)frame.getContentPane()).setBorder(new LineBorder(Color.BLACK)); frame.add(titlePane, BorderLayout.NORTH); frame.add(new JLabel("This is your content", JLabel.CENTER)); frame.setSize(200, 200); frame.setLocationRelativeTo(null); frame.setVisible(true); > >); > public class TitlePane extends JPanel < public TitlePane() < setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.weightx = 1; gbc.anchor = GridBagConstraints.EAST; add(new CloseControl(), gbc); >> public class CloseControl extends JButton < public CloseControl() < setBorderPainted(false); setContentAreaFilled(false); setFocusPainted(false); setOpaque(false); setBorder(new EmptyBorder(0, 0, 8, 12)); try < setRolloverIcon(new ImageIcon(ImageIO.read(getClass().getResource("/Highlighted.png")))); setRolloverEnabled(true); setIcon(new ImageIcon(ImageIO.read(getClass().getResource("/Normal.png")))); >catch (IOException ex) < Logger.getLogger(TestUndecoratedFrame.class.getName()).log(Level.SEVERE, null, ex); >addActionListener(new ActionListener() < @Override public void actionPerformed(ActionEvent e) < SwingUtilities.getWindowAncestor(CloseControl.this).dispose(); >>); > > > 

How to disable close button on a JFrame in Java?, To disable the close button, let us first create a frame − JFrame frame = new JFrame («Login!»); Use the setDefaultCloseOperation () to set the status of the close button. Set it to DO_NOTHING_ON_CLOSE to disable it − frame.setDefaultCloseOperation (JFrame.DO_NOTHING_ON_CLOSE);

How do you return a value from a java swing window closes from a button?

Basically, I have somewhere in my main code where this line of code is called

editwindow clubeditwindow = new editwindow(1,"Club Edit"); 

This line opens a new JFrame that can basically edit a bunch of information from the main class. I have 2 buttons called save and cancel. When save is clicked, I want to take the values from the textfields and then put it into a new object and return that to the main class, and close the window. When cancel is clicked, I want it to just not do anything, which is simple enough.

Don’t display the window as a JFrame but rather display it as a modal dialog. Then after it is no longer visible, the main GUI can query the object for any information that it holds. The simplest way to do this is to use a JOptionPane — they are clever little beasts if used correctly.

Here’s an example of what I mean. The JOptionPane holds jpane that displays information using a GridBagLayout.

ComplexOptionPane.java: displays the main JFrame.

import java.awt.event.*; import javax.swing.*; @SuppressWarnings("serial") public class ComplexOptionPane extends JPanel < private PlayerEditorPanel playerEditorPanel = new PlayerEditorPanel(); private JTextArea textArea = new JTextArea(20, 40); public ComplexOptionPane() < add(new JScrollPane(textArea)); add(new JButton(new AbstractAction("Get Player Information") < @Override public void actionPerformed(ActionEvent arg0) < int result = JOptionPane.showConfirmDialog(null, playerEditorPanel, "Edit Player", JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE); if (result == JOptionPane.OK_OPTION) < for (PlayerEditorPanel.FieldTitle fieldTitle : PlayerEditorPanel.FieldTitle.values()) < textArea.append(String.format("%10s: %s%n", fieldTitle.getTitle(), playerEditorPanel.getFieldText(fieldTitle))); >> > >)); > private static void createAndShowGui() < ComplexOptionPane mainPanel = new ComplexOptionPane(); JFrame frame = new JFrame("ComplexOptionPane"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().add(mainPanel); frame.pack(); frame.setLocationByPlatform(true); frame.setVisible(true); >public static void main(String[] args) < SwingUtilities.invokeLater(new Runnable() < public void run() < createAndShowGui(); >>); > > 

PlayerEditorPanel.java which holds the JPanel that is displayed in a JOptionPane

import java.awt.*; import java.util.HashMap; import java.util.Map; import javax.swing.*; @SuppressWarnings("serial") class PlayerEditorPanel extends JPanel < enum FieldTitle < NAME("Name"), SPEED("Speed"), STRENGTH("Strength"); private String title; private FieldTitle(String title) < this.title = title; >public String getTitle() < return title; >>; private static final Insets WEST_INSETS = new Insets(5, 0, 5, 5); private static final Insets EAST_INSETS = new Insets(5, 5, 5, 0); private Map fieldMap = new HashMap(); public PlayerEditorPanel() < setLayout(new GridBagLayout()); setBorder(BorderFactory.createCompoundBorder( BorderFactory.createTitledBorder("Player Editor"), BorderFactory.createEmptyBorder(5, 5, 5, 5))); GridBagConstraints gbc; for (int i = 0; i < FieldTitle.values().length; i++) < FieldTitle fieldTitle = FieldTitle.values()[i]; gbc = createGbc(0, i); add(new JLabel(fieldTitle.getTitle() + ":", JLabel.LEFT), gbc); gbc = createGbc(1, i); JTextField textField = new JTextField(10); add(textField, gbc); fieldMap.put(fieldTitle, textField); >> private GridBagConstraints createGbc(int x, int y) < GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = x; gbc.gridy = y; gbc.gridwidth = 1; gbc.gridheight = 1; gbc.anchor = (x == 0) ? GridBagConstraints.WEST : GridBagConstraints.EAST; gbc.fill = (x == 0) ? GridBagConstraints.BOTH : GridBagConstraints.HORIZONTAL; gbc.insets = (x == 0) ? WEST_INSETS : EAST_INSETS; gbc.weightx = (x == 0) ? 0.1 : 1.0; gbc.weighty = 1.0; return gbc; >public String getFieldText(FieldTitle fieldTitle) < return fieldMap.get(fieldTitle).getText(); >> 

Removing Cancel Button and «X» From Dialog Box in Swing, dialog.setDefaultCloseOperation (JDialog.DO_NOTHING_ON_CLOSE); Or if you really want to use a JOptionPane then check out the section from the Swing tutorial on Stopping a Dialog From Closing which shows how you check to make sure a valid value has been entered. Share answered Dec 9, 2018 at 3:20 …

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