あｐｐぇ１３ - プログラム倉庫

import java.awt.*;
import java.awt.event.*;
class apple13 extends Frame {
    public static void main(String [] args) {
        Frame f=new apple13();
        f.setTitle("apple13");
        f.setSize(600,600);
        f.setBackground(Color.red);
        f.setVisible(true);
    }
apple13(){addWindowListener(new stopwin());}
class stopwin extends WindowAdapter{
    public void windowClosing(WindowEvent we){System.exit(0);}
    }
public void paint(Graphics g){
g.setColor(Color.blue);    
g.drawLine(10,10,250,250);
  }
}