name of function 1

[mmfried]

Hi all,

Is there anyway that I could get a methods name automatically, In a class it's possible through this, is there anything similar in methods.

thanks

mmfried

 

[sedj]

Object o = // whatver object you want to interrogate
Class c = o.getClass();
java.lang.refelct.Method[] methods = c.getDeclaredMethods();

http://java.sun.com/docs/books/tutorial/reflect/

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[mmfried]

thanks,

but is there an option of getting the index in this array to the spesific function that I am in.

mmfried

 

[sedj]

why would you want to ?

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[stefanwagner]

I guess in 1.5 it's more easy.
Exceptions work with that information.
You could throw one, and catch it, but there are better solutions...

seeking a job as java-programmer in Berlin:

http://home.arcor.de/hirnstrom/bewerbung

 

[mmfried]

I want to design an automatic trace an therefore to get the name of the method, exception will get me out of the method and therefore won't be useful.
If there's a reference to a function with an option of getMethodName or smth, it will be very helpful

 

[legrang]

I assume you are using Java 2 1.4.0 or later.

Looking at the thread I gather you want to know the name of the method you are currently in. You can do this using an exception:

public class WhereAmI { 
	
	/** tells me which method called me */
	public static String tellMe() {
		Exception e = new Exception();
		StackTraceElement all[] = e.getStackTrace();
		if (all.length < 2) // WFT am I then, should be at least 2! 
			return "";
		return all[1].getMethodName();
	}
	
}

And then to complete the proof off concept, here is a very confused class that has methods that need to know who they are ;-)

public class Confused { 

	public static void main(String args[]) {
		Confused c = new Confused();
		c.someMethod();
		c.otherMethod();
	}
	
	public void someMethod() {
		System.out.println(WhereAmI.tellMe());
	}
	
	public void otherMethod() {
		System.out.println(WhereAmI.tellMe());
	}

}

Hope this helps!

 

[sedj]

I would bear in mind that any type of program that relys on know what method it is in is very bad programming style.

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[mmfried]

sedj, is there any other idea how to do an automatic trace othewise? (automatic name of class andmethods), the idea is to enable a "print" like class that there's no need to deel with the names of the methods & classes.

 

[sedj]

legrang's code is a perfectly valid way of determining a stack trace, but I was just saying that if your code relys on some condition that is determined by what method you are in, then your program design maybe needs rethinking.

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[mmfried]

sedj, its just for log use

 

[chiph]

Sedj - I think this would be only for debug tracing & logging.

Chip H.


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[sedj]

As I said above, for determining a stack trace, then no worries ...

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[chiph]

sedj -
I'm still learning Java (again) -- is there some way to generate your own stack frame, which might tell you the method name you're in?

Chip H.


____________________________________________________________________
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[legrang]

The example I pasted above does exactly that.

 

[mmfried]

It seems that's there's no other way for v1.4.2

In v1.5 there's a build in sollution for this (if I'm not mistaken, smth like getMethodName)

mmfried