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Hi everybody,
I've been working with gui recently, and I need help with my JButtons. I need to figure out how to set a button on the keyboard to click that JBUtton. I.e. When i hit the enter key it picks say the third button on the list or something like that. I've tried .setMnemonic with VK_Enter, but it still requires the user to press ALT+Enter. Is there a way to make it so that just a simple "Enter" keystroke (Ascii value 13) click the button?

Thanx in advance!

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Last Post by btsuper
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You'll want each of your JButton's to have an actionlistener. In addition, you'll want to the parent component to have a keylistener. Something like this:

import java.awt.event.*;
import javax.swing.*;


public class ButtonTest extends JPanel implements KeyListener{

	private static final long serialVersionUID = 1L;
	private JLabel msg;
	private JButton obj, ori, pro;
	
	public ButtonTest() {
		obj = createButton("Object", KeyEvent.VK_O);
		ori = createButton("Oriented", KeyEvent.VK_R);
		pro = createButton("Programming", KeyEvent.VK_P);
		msg = new JLabel("Status Message");
		
		add(obj);
		add(ori);
		add(pro);
		add(msg);
	}
	
	private JButton createButton(String text, int key) {
		final JButton button = new JButton(text);
		button.setMnemonic(key);
		button.addKeyListener(this);
		button.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				updateMessage(button.getText());
			}
		});
		return button;		
	}
	
	@Override
	public void keyPressed(KeyEvent e) {
		switch(e.getKeyCode()) {
		case KeyEvent.VK_O: updateMessage(obj.getText()); break;
		case KeyEvent.VK_R: updateMessage(ori.getText()); break;
		case KeyEvent.VK_P: updateMessage(pro.getText()); break;
		}
		
	}

	@Override
	public void keyReleased(KeyEvent e) { }

	@Override
	public void keyTyped(KeyEvent e) { }
	
	private void updateMessage(String text) {
		msg.setText(text);
	}
	
	public static void main(String[] args) {
		JFrame frame = new JFrame("Button Test");
		frame.setLocation(600, 400);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.add(new ButtonTest());
		frame.pack();
		frame.setVisible(true);
	}
}

Edited by ztini: n/a

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