Keyboard applications

Question

hi
i want to know how to develop a code managing the keyboard like adding special right click command , for example when you highlight a line and you right click you find special command .
and like adding a hot key

Answer 1

Here is a simple demonstration of a JPopupMenu with Shortcut Accelerators:
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.KeyEvent;
import java.awt.Event;
class Test extends JFrame {
     private JLabel label;
     private JPopupMenu jpm;
     private JMenuItem changeTextItem;
     private JMenuItem resetTextItem;
     public Test() {
          initComponents();
     private void initComponents() {
          label = new JLabel("Right-click on me, and select Change Text (or press CTRL+G)");
          label.setSize(400, 20);
          label.setLocation(5, 5);
          jpm = new JPopupMenu();
          changeTextItem = new JMenuItem("Change Text");
          changeTextItem.setMnemonic((int)'C');
          changeTextItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, Event.CTRL_MASK));
          resetTextItem = new JMenuItem("Reset Text");
          resetTextItem.setMnemonic((int)'R');
          resetTextItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_R, Event.CTRL_MASK));
          label.add(jpm);
          jpm.add(changeTextItem);
          jpm.add(resetTextItem);
          this.getContentPane().setLayout(null);
          this.getContentPane().add(label);
          this.pack();
          this.setSize(500, 300);
          this.setLocationRelativeTo(null);
          this.setTitle("Test Application");
          this.setDefaultCloseOperation(EXIT_ON_CLOSE);
               label.addMouseListener(new MouseAdapter() {
                    public void mouseClicked(MouseEvent evt) {
                         if( evt.getButton() == MouseEvent.BUTTON3 )
                              jpm.show(label, evt.getX(), evt.getY());
               changeTextItem.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent evt) {
                         label.setText("You clicked on the menu-item!");
               resetTextItem.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent evt) {
                         label.setText("Right-click on me, and select Change Text (or press CTRL+G)");
     public static void main(String[] argv) { new Test().setVisible(true); }
}