Java™ How To Program (Early Objects), Tenth Edition

5.11 (Optional) GUI and Graphics Case Study: Drawing Rectangles and Ovals

This section demonstrates drawing rectangles and ovals, using the Graphics methods drawRect and drawOval, respectively. These methods are demonstrated in Fig. 5.27.

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 1   // Fig. 5.27: Shapes.java 2   // Drawing a cascade of shapes based on the user’s choice. 3   import java.awt.Graphics; 4   import javax.swing.JPanel; 5  6   public class Shapes extends JPanel 7   { 8      private int choice; // user's choice of which shape to draw 9 10      // constructor sets the user's choice11      public Shapes(int userChoice)12      {13         choice = userChoice;14      }15 16      // draws a cascade of shapes starting from the top-left corner17       ...