Java.lang.InstantiationException Error

Question

Hello everyone,
I am getting the following error when I try to run my applet in the applet viewer.
java.lang.InstantiationException: Factory
     at java.lang.Class.newInstance0(Class.java:335)
     at java.lang.Class.newInstance(Class.java:303)
     at sun.applet.AppletPanel.createApplet(AppletPanel.java:723)
     at sun.applet.AppletPanel.runLoader(AppletPanel.java:652)
     at sun.applet.AppletPanel.run(AppletPanel.java:326)
     at java.lang.Thread.run(Thread.java:613)
Factory is a class which extends JApplet. Here is the init() method:
public void init(){
     this.setSize(800, 600);
     this.setContentPane(getJContentPane());
     try{
       Factory factory = new Factory("input.txt");
       factory.generateClass();
     catch(IOException e){}
}Any help would be greatly appreciated.

Answer 1

Roosh wrote:
That is correct. Should I have a constructor which contains no arguments in
order for this to work correctly?Yes. The browser plugin, for example, gets the name of your applet subclass from the HTML:
<applet code="AppletWorld.class" width="200" height="200">
</applet> It instantiates your class in a way that requires it to have a constructor that takes no arguments. You didn't define this.
I also mean that Factory is a class which inherits JApplet, so the Factory is an applet.Am I correct in thinking that Factory's init method creates another instance of Factory? That's the part the doesn't make sense to me.