java0711 - プログラム倉庫

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

class java0711 extends Canvas {

   Frame fr; 

   public void paint( Graphics g ) { 
       g.drawString( "asaf", 20, 20); 
   } 

   java0711() { 
       fr = [[new]] Frame( "フレーム" ); 
       setSize( 500, 500 ); 
       fr.add( this, BorderLayout.NORTH ); 
       Button bu = new Button( "[[ボタン]]" ); 
       fr.add( bu, BorderLayout.CENTER ); 

       bu.addActionListener( new ActionListener() { 
           public void actionPerformed( ActionEvent e ) { 
               repaint(); 
           } 
       } ); 
       fr.pack(); 
       fr.setVisible( true ); 
   } 

   public static void main( String[] args ) { 
       java0711 dr= new java0711(); 
   } 

}