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generics - duplicate method declaration

Asha Venkata

Joined: Jun 17, 2008
Posts: 1

Can someone please explain why the Java compiler considers the following to be duplicate definition of the method foo():

public void foo (List<String> x) {}
public void foo (List<Integer> x) {}

Ernest Friedman-Hill
author and iconoclast

Joined: Jul 08, 2003
Posts: 24189


Welcome to JavaRanch!

Java generics work by erasure, meaning that they're largely a compile-time abstraction. At runtime, all reference to the type parameter is removed -- which means these two methods are identical.

[Jess in Action][AskingGoodQuestions]
I agree. Here's the link:
subject: generics - duplicate method declaration