FULL PRODUCT VERSION :
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux ip-172-31-23-54 3.2.0-40-virtual #64-Ubuntu SMP Mon Mar 25 21:42:18 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
Given a class C that inherits an Interface with generic parameters.

Given that C overrides an interface method M with generic parameters.

If we call getDeclaredMethods() on Class<C> instance it returns two versions os M if C has more than one method.

But if C has only the overriden method M then getDeclaredMethods returns OK.


ADDITIONAL REGRESSION INFORMATION:
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) Server VM (build 24.45-b08, mixed mode)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See source code: note that the lines printed shows "execute" twice.

If you remove "public void someMethod" then "execute" appears only once.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Class.getDeclaredMethods() should return only the declared methods.
ACTUAL -
Class.getDeclaredMethods() should return the same method twice.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.lang.reflect.Method;


public class ExpressionsTest {

interface Expression<Input, Output> {
Output execute(Input parameters);
}

class ExpressionImpl implements Expression<String, Integer> {
@Override
public Integer execute(String parameter) {
return parameter.length();
}

public void someMethod() {
}
}

public static void main(String... args) throws NoSuchMethodException, SecurityException {
for (Method method : ExpressionImpl.class.getDeclaredMethods()) {
System.out.println(method);
}
}

}

---------- END SOURCE ----------