えを描く - プログラム倉庫

import java.awt.*;
import java.awt.event.*;
class pro extends Frame {

public static void main(String [] args) {

      Frame f=[[new]] pro(); 
      f.setTitle("pro"); 
      f.setSize(500,500); 
      f.setBackground(Color.yellow);         
      f.setVisible(true); 
  } 

pro(){
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.drawRect(100,100,200,300);

} 

}