import java.awt.Canvas;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import javax.swing.JComponent;
import javax.swing.JFrame;

public class Rectangle extends Canvas{
    Canvas canvas;

    void makeRect (int a, int b, int c , int d){
        canvas.setSize(500,500);
        Graphics g=canvas.getGraphics();
        g.drawRect(a, b, c, d);

    }


}