7027675: /applets/Blink demo needs to be improved

Reviewed-by: alexp

jdk/src/share/demo/applets/Blink/Blink.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -29,92 +29,106 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-/*
- */
 
 /**
  * I love blinking things.
  *
  * @author Arthur van Hoff
- * @modified 04/24/96 Jim Hagen use getBackground
- * @modified 02/05/98 Mike McCloskey removed use of deprecated methods
- * @modified 04/23/99 Josh Bloch, use timer instead of explicit multithreading.
- * @modified 07/10/00 Daniel Peek brought to code conventions, minor changes
+ * @author 04/24/96 Jim Hagen use getBackground
+ * @author 02/05/98 Mike McCloskey removed use of deprecated methods
+ * @author 04/23/99 Josh Bloch, use timer instead of explicit multithreading.
+ * @author 07/10/00 Daniel Peek brought to code conventions, minor changes
  */
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.util.StringTokenizer;
+import java.util.Timer;
+import java.util.TimerTask;
 
-import java.awt.*;
-import java.util.*;
 
 public class Blink extends java.applet.Applet {
+
+    private static final long serialVersionUID = -775844794477507646L;
     private Timer timer;              // Schedules the blinking
     private String labelString;       // The label for the window
     private int delay;                // the delay time between blinks
 
+    @Override
     public void init() {
         String blinkFrequency = getParameter("speed");
-        delay = (blinkFrequency == null) ? 400 :
-            (1000 / Integer.parseInt(blinkFrequency));
+        delay = (blinkFrequency == null) ? 400
+                : (1000 / Integer.parseInt(blinkFrequency));
         labelString = getParameter("lbl");
-        if (labelString == null)
+        if (labelString == null) {
             labelString = "Blink";
+        }
         Font font = new java.awt.Font("Serif", Font.PLAIN, 24);
         setFont(font);
     }
 
+    @Override
     public void start() {
         timer = new Timer();     //creates a new timer to schedule the blinking
         timer.schedule(new TimerTask() {      //creates a timertask to schedule
+
             // overrides the run method to provide functionality
+            @Override
             public void run() {
                 repaint();
             }
-        }
-            , delay, delay);
+        }, delay, delay);
     }
 
+    @Override
     public void paint(Graphics g) {
         int fontSize = g.getFont().getSize();
         int x = 0, y = fontSize, space;
-        int red =   (int) ( 50 * Math.random());
-        int green = (int) ( 50 * Math.random());
-        int blue =  (int) (256 * Math.random());
+        int red = (int) (50 * Math.random());
+        int green = (int) (50 * Math.random());
+        int blue = (int) (256 * Math.random());
         Dimension d = getSize();
         g.setColor(Color.black);
         FontMetrics fm = g.getFontMetrics();
         space = fm.stringWidth(" ");
         for (StringTokenizer t = new StringTokenizer(labelString);
-             t.hasMoreTokens();) {
+                t.hasMoreTokens();) {
             String word = t.nextToken();
             int w = fm.stringWidth(word) + space;
             if (x + w > d.width) {
                 x = 0;
                 y += fontSize;  //move word to next line if it doesn't fit
             }
-            if (Math.random() < 0.5)
-                g.setColor(new java.awt.Color((red + y*30) % 256,
-                                              (green + x/3) % 256, blue));
-            else
+            if (Math.random() < 0.5) {
+                g.setColor(new java.awt.Color((red + y * 30) % 256,
+                        (green + x / 3) % 256, blue));
+            } else {
                 g.setColor(getBackground());
+            }
             g.drawString(word, x, y);
             x += w;  //shift to the right to draw the next word
         }
     }
 
+    @Override
     public void stop() {
         timer.cancel();  //stops the timer
     }
 
+    @Override
     public String getAppletInfo() {
         return "Title: Blinker\n"
-            + "Author: Arthur van Hoff\n"
-            + "Displays multicolored blinking text.";
+                + "Author: Arthur van Hoff\n"
+                + "Displays multicolored blinking text.";
     }
 
+    @Override
     public String[][] getParameterInfo() {
         String pinfo[][] = {
-            {"speed", "string", "The blink frequency"},
-            {"lbl", "string", "The text to blink."},
-        };
+            { "speed", "string", "The blink frequency" },
+            { "lbl", "string", "The text to blink." }, };
         return pinfo;
     }
 }