Java Swing How to - Close a JDialog by hitting the "enter" on keyboard

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Question

We would like to know how to close a JDialog by hitting the "enter" on keyboard.

Answer

import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
// www .j  av a2 s.c om
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.Box;
import javax.swing.InputMap;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;

public class Main {
  public static void main(String[] args) {
    JFrame frame = new JFrame("Frame");
    frame.add(Box.createRigidArea(new Dimension(400, 300)));
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);

    JDialog dialog = new JDialog(frame, "Dialog", true);

    int condition = JPanel.WHEN_IN_FOCUSED_WINDOW;
    InputMap inputMap = ((JPanel) dialog.getContentPane())
        .getInputMap(condition);
    ActionMap actionMap = ((JPanel) dialog.getContentPane()).getActionMap();
    String enter = "enter";
    inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), enter);
    actionMap.put(enter, new AbstractAction() {
      @Override
      public void actionPerformed(ActionEvent e) {
        dialog.dispose();
      }
    });

    dialog.add(Box.createRigidArea(new Dimension(200, 200)));
    dialog.pack();
    dialog.setLocationRelativeTo(frame);
    dialog.setVisible(true);

  }
}

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