Chapter 10: Handling Mouse and Keyboard Events

Note: this page applies to the now-obsolete first edition of the book. For the second edition, please see http://www.corewebprogramming.com.

Contents

• Java Classes in this Chapter
• URLs in this Chapter
• Core Web Programming on-line ordering page. 20% off at amazon.com; ships in 24 hours.
• For more info on event-handling, see the following faster-paced Java tutorials and AWT books.

Java Classes in this Chapter

• Drawing circles where user clicks the mouse. These examples illustrate various approaches to Java 1.1 event handling. There are five similar versions:
  • DrawCircles2.java, the version using an external mouse listener. Available on-line via DrawCircles2.html.
  • DrawCircles3.java, the version attaching the applet to itself as a mouse listener. Available on-line via DrawCircles3.html.
  • DrawCircles4.java, the version using named inner classes. Available on-line via DrawCircles4.html.
  • DrawCircles4B.java, the version using anonymous inner classes. Available on-line via DrawCircles4B.html.
  • DrawCircles1.java, the version using low-level event handling (processMouseEvent). Available on-line via DrawCircles1.html.
• handleEvent.java. An example of what the builtin handleEvent method looks like in Java 1.02.
• MouseDownFrame.java. An illustration of how events bubble up through enclosing windows in Java 1.02.
• MouseDownPanel.java. Supporting window used in MouseDownFrame.
• CursorCanvas.java. Illustrates that you can change cursors in windows in Java 1.02 by looking up the parent Frame. You don't need to do this in Java 1.1 or 1.2 -- per-Component cursor support is already built in.
• CursorTest.java. Demonstrates the CursorCanvas (also available on-line through CursorTest.html).
• EventPanel.java
• Events.java. A Java 1.02 event reporter. Uses EventPanel (also available on-line through Events.html).
• SimpleWhiteboard2.java. Java 1.1 version of an applet that lets you do free-hand drawing. (also available on-line through SimpleWhiteboard2.html)
• Whiteboard2.java. Enhancement to SimpleWhiteboard2 that supports annotating the drawings with keyboard text. (also available on-line through Whiteboard2.html).
• SimpleWhiteboard1.java. Java 1.02 version of an applet that lets you do free-hand drawing. (also available on-line through SimpleWhiteboard1.html)
• Whiteboard1.java. Enhancement to SimpleWhiteboard1 that supports annotating the drawings with keyboard text. (also available on-line through Whiteboard1.html).
• Mirror.java. A class that illustrates that you can attach multiple listeners to the same component in Java 1.1, plus consume events before the underlying component acts on them. (also available on-line through Mirror.html)
• MouseReporter.java. Prints a summary of the mouse events to the Java console (also available on-line in a Java 1.1 capable browser through MouseReporter.html).

URLs in this Chapter

• Inner Classes: http://java.sun.com/products/jdk/1.1/docs/guide/innerclasses/