Button for closing a JDialog

user_882241 0
Viewed 88745

I want to add a button (JButton) at the bottom of a JDialog which should close the JDialog when pressed. The problem is I don't know what to write in the ActionListener of that button. I don't want the button to exit the program, just close the dialog.

The JDialog is created by explicitly calling one of JDialog's constructors, not by calling one of the methods from JOptionPane.

I was extremely surprised that I was unable to find an answer to this using Google. I expected that a problem that is so often encoutered would be widely covered on a lot of programming sites. Pretty weird that it is not.

jdialog swing java
5 Answers

In addition to other answers, you can set it as the default button for the dialog root pane:

JButton myButton = new JButton("Close");
myButton.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        dispose(); // Or whatever else
        setVisible(false);
    }
});
getRootPane().setDefaultButton(myButton);

That way, its ActionListener will be called whenever Enter is pressed.

user_10986030

I have done this slightly differently and it serves the purpose. I have several classes. They extend JPanel, serve different purposes and use JDialogs to get users' inputs.

A typical class would contain necessary fields, save and cancel buttons.

public class EnterpriseGUI extends javax.swing.JPanel {...} would look like this:

JPanel class in designer mode

Class EnterpriseGUI has a private variable jdialog and a method to set jdialog. Also ActionEvent for 'save' button and 'cancel' button.

private JDialog jdialog;
public void setJDialog(JDialog jdialog) {
    this.jdialog = jdialog;
}
private void btnSaveActionPerformed(java.awt.event.ActionEvent evt) {                                        
    // Do your stuff..
    jdialog.dispose();
} 
private void btnCancelActionPerformed(java.awt.event.ActionEvent evt) {                                          
    // Discard your stuff..
    jdialog.dispose();
}

Finally, I create an instance of EnterpriseGUI from any other class as needed and embed it into JDialog.

Class OtherClass{
private JDialog dialog;
private EnterpriseGUI = new enterprisegui();
    private void button1ActionPerformed(java.awt.event.ActionEvent evt) {                                             
        this.dialog = new JDialog(this, "My dialog", true);
        this.dialog.setResizable(false);
        enterprisegui.setJDialog(dialog);
        this.dialog.getContentPane().add(enterprisegui);
        this.dialog.pack();

        Dimension Size = Toolkit.getDefaultToolkit().getScreenSize();
        this.dialog.setLocation(new Double((Size.getWidth()/2) - 
                (dialog.getWidth()/2)).intValue(), new Double((Size.getHeight()/2) - 
                        (dialog.getHeight()/2)).intValue());
        this.dialog.setVisible(true);

    }  
}
user_31608980
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