If we have class Foo with method:

public class Foo {
public void bar(Object a, String b) {}
}

then MethodCall fails if we invoke:

dispatcher.callRemoteMethods(null, "bar", new Object[]

, new Class[]

, ...);

because the first formal parameter of foo() is an Object and the arg a String, and we do an equals() on the 2 classes.

Solution: use Class.isAssignableFrom(Class)