Adding JApplet to JFrame

Question

Hi
we can add an applet in JFrame(if it takes no parameters) e.g.
jFrameObject.getContentPane( ).add(anAppletObject);
but if an applet takes some parameters for initialization, then how i can pass parameters to that applet. means what is the code for passing parameters to an applet.
Thanks in Advance
Yahya Kamran

Answer 1

Well the key to your problem is an interface called "AppletStub".
What you need to do is define a own Class which implements AppletStub.
Therefore define methods to retrieve parameters or a constructor doing that and the one to get the parameters in your custom AppletStub.
The other methods must be implemented, too, but you can leave them blank, too. (eg. void foo() {} the empty braces are what makes the method implemented ;-) ).
Now do follwing:
// Creating the Applet you want to
SillyApplet anAppletObject  = new SillyApplet();
// Add it as you did
jFrameObject.getContentPane().add(anAppletObject);
// Now creating the parameters. This can be done how you like
// (maybe an ArrayList maybe something more sophisticated)
String[]  parameterList = new String[3];
parameterList[0] = "one parameter";
parameterList[1] = "another parameter" ;
parameterList[2]  = "something special";
parameterList[3] = "the last thing ever";
// Assume your custom stub accepts a String[] of parameters int it's constructor
// This is how to create such a mean Stub thing
WeirdStub stub  = new WeirdStub(parameterList);
// Handing the stub over to the applet
anAppletObject.setStub(stub);
// Now let the Applet get loose!
anAppletObject.init();
anAppletObject.start();Please note thus the Applet is added to the JFrame, you are still taklking to the same mean object!
This is called reference semantics, since the variable actualy represents a pointer to the Object you are talking about.
Another note this has to work a kind like that since the applet viewer is a java programm it self and various ide offer such a thing, too and are of course written in java, too.
When stuck report in again.
Greetings to your feetings,
.o0|LIQID|0o.
Found it in the java api source code.