example5_3.java

书中的例题

/* 拆分窗体 */
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Rootwindow extends JFrame
{  JButton btn;JLabel lb;
   JTextArea text;
   JSplitPane split1,split2;
   Rootwindow()
   {  super("可拆分窗体");
	   setSize(200,200);setVisible(true);
      Container con=getContentPane(); 
      btn=new JButton("我是按钮"); 
	  lb=new JLabel("我是标签");
      text=new JTextArea("这是可拆分窗体",5,10);
      split1=new JSplitPane(JSplitPane.VERTICAL_SPLIT,btn,lb);
      split2=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,split1,text);
      con.add(split2,BorderLayout.CENTER);
      addWindowListener(new WindowAdapter()
        {public void windowClosing(WindowEvent e)
        {System.exit(0);}});
   }
}
public class Example5_3
{  public static void main(String args[])
   { Rootwindow win=new Rootwindow();
     win.pack();
   }
}