swing8.java

来自「java 初学者学习实例」· Java 代码 · 共 38 行

import javax.swing.*;import java.awt.*;import java.awt.event.*;
class Mywindow extends JFrame implements ActionListener
{JButton button1,button2,button3;JTextArea text;Icon icon;
    Mywindow()
   {setSize(200,200);setVisible(true);
     Container con=getContentPane();
     text = new JTextArea();	
	 con.setLayout(new GridLayout(1,4));
	 icon = new ImageIcon("tom.jpg");
       button1=new JButton("Boy", icon); button2=new JButton("Girl" ) ;
       button3=new JButton("friend", new ImageIcon("jerry.jpg"));
       button1.setVerticalTextPosition(AbstractButton. TOP);
       button1.setMnemonic('b');
       con.add(button1);con.add(button2);con.add(button3);con.add(text);
       button1.addActionListener(this);button3.addActionListener(this);
       addWindowListener(new WindowAdapter()
           {public void windowClosing(WindowEvent e)
               {System.exit(0);}});
      }
   public void actionPerformed(ActionEvent e)
    {if(e.getSource()==button1)
       { text.setText(button1.getText()+button2.getText());
           button2.setIcon(button1.getIcon());
           button2.setHorizontalTextPosition(AbstractButton. RIGHT);
                 button3.setEnabled(false);
       }
   else if(e.getSource()==button3)
        { text.append(button3.getText( )); button2.setIcon(button3.getIcon());
         }
    }
}
public class Swing8
{ public static void main(String args[])
    { Mywindow win=new Mywindow();win.pack();
    }
}