How to get implementation class name from an interface object ?

[shahabas shabeer]

Hi friends,

I am trying to debug an existing application. I have handle to a java object (say a.b.MyClass xyz). 'MyClass' is an interface. I want to know the name of the class which has implemented this interface. In other words, I want to know the actual type of a java object xyz. xyz.getClass().getName() returns the interface name and not the actual implementation class name. Is there a way to get the actual implementation class name ?

Thanks in advance!!

[Ulf Dittmer]

Yes, that's possible. You'd call ".getClass().getName()" on the object - that will return a String with the fully-qualified class name.

[Bill Cruise]

Ulf is right. Can you show us how you're declaring your reference and how you're getting an instance of your object. I tried this:

MyInterface object = new MyClass();
System.out.println( "Object type: " + object.getClass().getName() );

and got the following output:

Object type: testcode.MyClass

[shahabas shabeer]

Thank you Dittmer. Thank you Cruise..

Yes..That works. I got the Class name and I fixed the bug.

Cheers