JMenuItem mi = new JMenuItem("閉じる"); //E
  mi.addActionListener( //F
   new ActionListener() { //G+H
    public void actionPerformed(ActionEvent e) {
      System.exit(0);
  }});
  pm.add(mi); //D
  
  JMenuItem mi2 = new JMenuItem("サイズを大きくする"); //E
  mi2.addActionListener( //F
   new ActionListener() { //G+H
    public void actionPerformed(ActionEvent e) {
      setSize(300, 300);
  }});
  pm.add(mi2); //D
  
  JMenuItem mi3 = new JMenuItem("サイズを戻す"); //E
  mi3.addActionListener( //F
   new ActionListener() { //G+H
    public void actionPerformed(ActionEvent e) {
      setSize(100, 100);
  }});
  pm.add(mi3);
BBR-MD5:756e340a6c24d7ba48d1e0a72a430dc8(100)
BBS_COPIPE=Lv:0
PID: 64052
[0.107275 sec.]
Rock54ed.