can i overload a method with another one that takes the same parameters but has a different return type?

Question

For example can i have something like this:

public static void SAMENAME (sameparameter n) 
{
    some code ;
} 

public static String SAMENAME (sameparameter n) 
{
    similar code; 
    return someString ; 
} 

Answer 1

This isn't allowed.

The method signature in Java is considered to be the method name and parameter list. The return type is not part of the method signature.

Definition: Two of the components of a method declaration comprise the method signature—the method's name and the parameter types.

Source: http://java.sun.com/docs/books/tutorial/java/javaOO/methods.html

Answer 2

This isn't allowed. For the compiler it is possible that several fit. For instance:

SAMENAME(n);

Could return a String or be void, both are valid.