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该压缩文件中共包含16个非常实用的java学习实例

   JFrame f=new JFrame(" 计算器");
   JButton b1=new JButton("   1  ");	
   JButton b2=new JButton("   2  ");	
   JButton b3=new JButton("   3  ");	
   JButton b4=new JButton("   4  ");	
   JButton b5=new JButton("   5  ");	
   JButton b6=new JButton("   6  ");	
   JButton b7=new JButton("   7  ");	
   JButton b8=new JButton("   8  ");	
   JButton b9=new JButton("   9  ");	
   JButton b0=new JButton("   0  ");	
   JButton ba=new JButton("   +  ");	
   JButton bb=new JButton("   -  ");	
   JButton bc=new JButton("   *  ");	
   JButton bd=new JButton("   /  ");	
   JButton be=new JButton("   =  ");
   JButton bf=new JButton("   .  ");
   JPanel p5=new JPanel(new FlowLayout(FlowLayout.CENTER,10,0));
   JPanel p2=new JPanel(new FlowLayout(FlowLayout.CENTER,10,0));
   JPanel p3=new JPanel(new FlowLayout(FlowLayout.CENTER,10,0));
   JPanel p4=new JPanel(new FlowLayout(FlowLayout.CENTER,10,0));
   JPanel p1=new JPanel(new BorderLayout(1,1));
   JPanel p6=new JPanel();
   JPanel p7=new JPanel();
   JPanel p8=new JPanel();
   JPanel p9=new JPanel();
   JLabel t1=new JLabel("0");
   






















   Frame f=new Frame(" 计算器");
   Button b1=new Button("   1  ");	
   Button b2=new Button("   2  ");	
   Button b3=new Button("   3  ");	
   Button b4=new Button("   4  ");	
   Button b5=new Button("   5  ");	
   Button b6=new Button("   6  ");	
   Button b7=new Button("   7  ");	
   Button b8=new Button("   8  ");	
   Button b9=new Button("   9  ");	
   Button b0=new Button("   0  ");	
   Button ba=new Button("   +  ");	
   Button bb=new Button("   -  ");	
   Button bc=new Button("   *  ");	
   Button bd=new Button("   /  ");	
   Button be=new Button("   =  ");
   Button bf=new Button("   .  ");
   Panel p5=new Panel(new FlowLayout(FlowLayout.CENTER,10,0));
   Panel p2=new Panel(new FlowLayout(FlowLayout.CENTER,10,0));
   Panel p3=new Panel(new FlowLayout(FlowLayout.CENTER,10,0));
   Panel p4=new Panel(new FlowLayout(FlowLayout.CENTER,10,0));
   Panel p1=new Panel(new BorderLayout(1,1));
   Panel p6=new Panel();
   Panel p7=new Panel();
   Panel p8=new Panel();
   Panel p9=new Panel();
   Label t1=new Label("0");

















	b0.addActionListener(this);
		b1.addActionListener(this);
		b2.addActionListener(this);
		b3.addActionListener(this);
		b4.addActionListener(this);
		b5.addActionListener(this);
		b6.addActionListener(this);
		b7.addActionListener(this);
		b8.addActionListener(this);
		b9.addActionListener(this);
		ba.addActionListener(this);
		bb.addActionListener(this);
		bc.addActionListener(this);
		bd.addActionListener(this);
		be.addActionListener(this);
		bf.addActionListener(this);