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

class JPopupMenuSample extends JFrame
                  implements ActionListener, MouseListener {
   JPopupMenu popup = new JPopupMenu();
   JPopupMenuSample() {
      JMenuItem menuA = new JMenuItem("メニューA");
      JMenuItem menuB = new JMenuItem("メニューB");
      menuA.addActionListener(this);
      menuB.addActionListener(this);
      popup.add(menuA);
      popup.add(menuB);

      getContentPane().addMouseListener(this);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setTitle("JPopupMenuを使ってポップアップメニューを表示");
      setSize(530, 100);
      setVisible(true);
   }
   public void actionPerformed(ActionEvent e) {
      System.out.println(e.getActionCommand());
   }
   public void mousePressed(MouseEvent e) {
      System.out.println("マウスボタンを押す");
   }
   public void mouseReleased(MouseEvent e) {
      if (e.isPopupTrigger()) {
         popup.show(e.getComponent(), e.getX(), e.getY());
         System.out.println("マウスボタン右を離す");
      }else{
         System.out.println("マウスボタン左を離す");
      }
   }
   public void mouseClicked(MouseEvent e) {
      System.out.println("マウスボタンをクリック");
   }
   public void mouseEntered(MouseEvent e) {
      System.out.println("カーソルON");
   }
   public void mouseExited(MouseEvent e) {
      System.out.println("カーソルOFF");
   }
   public static void main(String[] args) {
      new JPopupMenuSample();
   }
}