debug15_5.java

程序练习中包括书中实例程序代码和练习中要用到的代码,是压缩文件

package questions.c15;
import javax.swing.JPanel;
import java.awt.*;
public class Debug15_5 extends JPanel {
   public static final int SHARP = 0;
   public static final int ROUNDED = 1;
   private String sideLength = "60";
   private int corners = SHARP;
   private static final Point START = new Point( 20, 20 );
   private static final int ROUNDING = 20;
   public void setCorners( int corners ) {
      this.corners = corners;
   }
   public int getCorners() {
      return corners;
   }
   public Dimension getPreferredSize() {
      return new Dimension( 100, 100 );
   }
   public void paintComponent( Graphics g ) {
      super.paintComponent( g );
      int sl = Integer.parseInt( sideLength );
      if ( corners == SHARP ) {
         g.drawRect( START.x, START.y, sl, sl );
      } else {
         g.drawRoundRect( START.x, START.y, sl, sl,
                          ROUNDING, ROUNDING );
      }
   }
}