Get the interface name from the implementation class

Question

Example :

List list = new ArrayList();
//This would give me the class name for the list reference variable.
list.getClass().getSi         


        

Answer 1

Class  aClass = ... //obtain Class object. 
Class[] interfaces = aClass.getInterfaces();

Answer 2

Using Reflection you can invoke the Class.getInterfaces() method which returns an Array of Interfaces that your class implements.

list.getClass().getInterfaces()[0];

To get just the name

list.getClass().getInterfaces()[0].getSimpleName();