General Java Questions IV

Method ssMethod = superduper.getMethod("method1",null);

ssMethod.invoke(this,null);

(I didn t check the exact syntax and parameters of the above code.)

However the necessity to skip a hierarchy shows that there is something wrong with

the design of your application. You should fix this instead of using dirty tricks like the

above.

Carl Rosenberger

db4o   database for objects   

http://www.db4o.com

Q: If anybody can provide some tips on how to design this smartly...

Q: I am facing a problem that might sound common to you all. I have to write a

switch statement with 40 case statement. I am wondering if there can be some way

to reduce this. If anybody can provide some tips on how to design this smartly. ;)

Answer: The alternatives are:

an array you index into to get values or delegates.

an array you binary search.

Roedy Green

 Q: I want to use some java variables , across multiple java files. Is there some

thing like a "extern in C" in java ??

Answer: If you want to share constants, the usual way is to create a class like this:

public class My_Constants {

    public static final int ID_OK = 1;

    public static final int ID_CANCEL = 2;

    public static final String MSG_OK = "Okay.";

    public static final String MSG_ERROR = "An error occurred.";

}

If you want to share a single object instance across your application, use the

Singleton pattern.

Actually, the more common way is to create an interface, like this:

public interface MyConstants{ // Note naming conventions

    int ID_OK=1; // public static final is implicit in interfaces

    // etc

}

Then anyone who wishes to use the constants without putting MyConstants before

each reference can simply implement the interface.

by Gerhard Haring, Jon Skeet

 Q: Does anyone know what the character limit for a class name would be?

I have my class name in a variable ft and I am doing a Class.forName(ft);

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