boxlayoutdemo4.java

java 完全探索的随书源码

// BoxLayoutDemo4.java

import javax.swing.*;
import javax.swing.border.*;

import java.awt.*;
import java.awt.event.*;

class BoxLayoutDemo4 extends JFrame
{
   BoxLayoutDemo4 (String title)
   {
      super (title);

      addWindowListener (new WindowAdapter ()
                         {
                             public void windowClosing (WindowEvent e)
                             {
                                System.exit (0);
                             }
                         });

      JPanel jp = new JPanel ();
      jp.setLayout (new BoxLayout (jp, BoxLayout.Y_AXIS));

      JButton jb = new JButton ("Top row");
      jb.setMaximumSize (new Dimension (200, 100));
      jb.setAlignmentX (RIGHT_ALIGNMENT);
      jp.add (jb);

      JLabel jl = new JLabel ("Middle row");
      jl.setMaximumSize (new Dimension (200, 100));
      jl.setAlignmentX (RIGHT_ALIGNMENT);
      jp.add (jl);
      jl.setBorder (new LineBorder (Color.red));

      jb = new JButton ("Bottom row");
      jb.setMaximumSize (new Dimension (200, 100));
      jb.setAlignmentX (RIGHT_ALIGNMENT);
      jp.add (jb);

      getContentPane ().add (jp);

      setSize (300, 100);
      setVisible (true);
   }

   public static void main (String [] args)
   {
      new BoxLayoutDemo4 ("Box Layout Demo4");
   }
}