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How to invoke a private class after clicking the button that work?

 
Ket Nonting
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Hi guys,

I have an applet with the following structure:

The question is how do I invoke the CoolStuff class that real works. It just compiled and did not work. I can't find any tutorial on the web about this.

And another question, can I invoke a java code snippet to run inside the CoolStuffs class.

Thanks in advance.
 
john price
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What exactly didn't work? Did you receive an error? If you did, please post it. What results were you expecting?

John Price
 
Ket Nonting
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Sorry for it's taking so long to reply. It's kind of bit embarrassment. I'm new to java and didn't know if people have done this and I'm a laggard.
I'm trying to capture a screenshot with java applet but it didn't seem to work. I can't invoke the subclass set of java application to automate.
Bellow is my experimenting so far, would be greatly appreciated if you can point out where it went wrong:

 
Paul Clapham
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First of all, your comment is incorrect in that fragment from your post. You don't "invoke" a class in Java (except in that uncommon situation where you're running a class from the command line). What your code does is to create an instance of that class, nothing else. You apparently thought that "invoking" a class would call a method which happened to called "main". That's not the case either. If you want that method to be called, you're going to have to call it.

Although I wouldn't call it "main", that doesn't describe its function at all. I would call it "capture" or something like that. And I would get rid of the String-array parameter, since you don't use that anywhere in the method.
 
Ket Nonting
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Thank Paul,

Your comment is complicated to me. I don't understand it right now, because I'm new to this java thing. But I would try to understand it. Maybe I should start with the "call" method you mentioned. The "invoke" word was just borrowed from Oracle's tutorial website. I don't really understand what does it mean right now.
 
Paul Clapham
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New to Java? And you're writing an applet? I don't recommend that, you're going to get into all kinds of non-Java complexities if you do that. Start off by writing a plain old Java application first.
 
Ket Nonting
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Thanks for suggestions. I've learned basic java programing. But the application didn't serve my purpose. I jump to an applet thing. That is very helpful suggestion. I will do this.
 
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