Introduction

Content

Apply

Reflect

Extend

(1) Study the example program Zener.java and answer the questions in it.

(2) Compile and run the applet with the appletviewer

NOTE: For the applet to work you need to have the GIF image files in the same directory as the Java source file:

zennerWaves.gif
zennerSquare.gif
zennerCircle.gif
zennerStar.gif
zennerCross.gif

The screen should look similar to the following run:

(3) Make the applet change the displayed shape, i.e. make the screen look these different ways:

Discussion of notice the reduced yPos of the square (from the default 50) and the increased xPos of the circle (from the defalt 50) — this shows the success of the invocation of the inherited methods through the sending of the setX() and setY() messages in ShapeApplet.java .

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