Applet Scripting

JavaScript can execute methods in an Applet and also retrieve data from an Applet.

Warning:  MS  JVM (Microsoft's) vs Sun's JVM & applets.  The statements below have been tested with IE v6.0.

• Java Applets compiled with SDK 1.5 will not work with MS JVM.  You will need to use Sun's JVM.
• MS JVM (Microsoft's Java Virtual Machine) is based on API 1.1.6
• Java Applets compiled with JDK 1.2 will work with MS JVM provided that you just use API 1.1 calls.

Example: JavaScript executes a public Applet method

Applet (Compiled with J2SE 1.2) - Works with MS JVM & Sun's JVM

document.myApplet_orig1.newText( "Hello World" )

Applet (Compiled with J2SE 1.5) - Only works with Sun's JVM.

• JavaScript error: "Error: Object doesn't support this property or method")
• Java Console Error:
  Error loading class: Applet1
  java.lang.NoClassDefFoundError
  java.lang.ClassNotFoundException: Applet1

Sorry, your browser does not support Java Applets.

document.myApplet_orig1.newText( "Hello World" )

Example: JavaScript get data from public Applet method

Testing links:

Send a default text message to all Applets.

• Applet #1
• Send to Applet #1: A1 A-Hello
• Send to Applet #1: A1 B-Hello
• Get message string from Applet #1
• Applet #2
• Send to Applet #2: A2 A-Hello
• Send to Applet #2: A2 B-Hello
• Get message string from Applet #2
• Applet #3
• Send to Applet #3: A3 A-Hello
• Send to Applet #3: A3 B-Hello
• Get message string from Applet #3

Applet #1

Applet #2

Applet #3

Testing URLs:
http://localhost/michael-thomas/tech/java/javaadvanced/appletsjavascript/appletsjavascript.htm
http://www.michael-thomas.com/tech/java/javaadvanced/appletsjavascript/appletsjavascript.htm