あｐｐぇ０８０１ - プログラム倉庫

import java.awt.*;
import java.awt.event.*;
class apple0801 extends Frame {
    public static void main(String [] args) {
        Frame f=new apple0801();
        f.setTitle("apple0801");
        f.setSize(600,600);
        f.setBackground(Color.yellow);
        f.setVisible(true);
    }
apple0801(){addWindowListener(new stopwin());}
class stopwin extends WindowAdapter{
    public void windowClosing(WindowEvent we){System.exit(0);}
    }
public void paint(Graphics g){
g.setColor(Color.red);    
g.drawLine(100,100,250,250);
  }
}