import java.awt.*;
import javax.swing.*;

class SampleCanvas{
   
     public static void main(String[] args) 
  
        {

            Canvas myCanvas = new Canvas("Jack's Example");
          
            myCanvas.setSize(500,500);
            myCanvas.fillBackground(Color.white);
            myCanvas.setVisible(true);

            myCanvas.setInkColor(Color.red);
            myCanvas.drawString("The origin is in the upper left corner",20,30);  
            myCanvas.drawString("x increases to the right and y increases going down",20,45);

            myCanvas.setInkColor(Color.green);
            myCanvas.drawLine(40,50,200,240);

            myCanvas.setInkColor(Color.blue);
            myCanvas.drawRectangle(350,20,50,50);

            myCanvas.setInkColor(Color.cyan);
            myCanvas.fillRectangle(450,40,10,10);

            myCanvas.setInkColor(Color.magenta);
            myCanvas.drawOval(300,400,40,20);
            myCanvas.drawRectangle(300,400,40,20);

            myCanvas.fillOval(350,400,20,20);
            myCanvas.drawRectangle(350,400,20,20);

            JOptionPane.showMessageDialog(null,"Press OK to quit");
            System.exit(0);
        }
}