ex29 29 - プログラム倉庫

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

public class ex29 extends Frame {
   public ex29() {
      addWindowListener(new MyClosing());
      MyCanvas mycanvas = new MyCanvas();
      add(mycanvas);
      setSize(800,500);
      setTitle("練習");
      setVisible(true);
   }

   public static void main(String args[]) {
      new ex29();
   }

   class MyClosing extends WindowAdapter {
      public void windowClosing(WindowEvent e) {
         System.exit(0);
      }
   }

   class MyCanvas extends Canvas {
      public void paint(Graphics g) {
         g.setColor(Color.red);
         g.drawLine(100,100,750,490);
      }
   }
}