82 - プログラム倉庫

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

class java82 extends Canvas {
    Frame fr;

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

    java82() {
        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 ) {
        java82 dr= new java82();
    }
}