ｇｇｇ１００ぱいんｔ - 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.fillRect(100,100,200,300);
}
}