Classwork:
Use a JFrame to create an application, YI_ManyShapes.java and YI_ManyShapesJFrame.java that draws rectangles, ellipses and lines. Use different colors and fill.
Here is a good source for your application:

Here is a simple example:

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JComponent;
/**
 * Write a description of class RectangleObject here.
 
 */
public class RectangleObject extends JComponent
{
    public void paintComponent(Graphics g)
    {
      Graphics2D g2 = (Graphics2D) g;

      // Construct a rectangle object
      Rectangle box = new Rectangle(5, 10, 20, 30);
      // draw the rectangle
      g2.draw(box);  
    }
   
}

The JFrame class:

import javax.swing.JFrame;
/**
 * Draw an empty frame using JFrame.
 * 
 */

public class RectangleJFrame
{
       public static void main(String[] args)
    {
        JFrame frame = new JFrame();
        frame.setSize(300,400);
        frame.setTitle("A Rectanlge Object in a JFrame");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        RectangleObject aRectangle = new RectangleObject();
        
        frame.add(aRectangle);
        frame.setVisible(true);
    }
}

Homework:
Write an application, YI_HappyFace.java using what you learned from Manyshapes to draw a happy face. Make sure to include the JFrame class also.