1. A method in a class declared as static may be invoked simply by using the name of the method alone.   True   False   2. When an instance of a class, or object, is specified as a parameter to a method, a reference to the said object is passed to the method.   True   False   3. When a method or a variable in a class is declared as private, it can only be accessed by the methods within the same class.   True   False   4. A static method can refer to any instance variable of the class.   True   False   5. All interface methods must be declared as public when implemented in a class.   True   False   6. Methods can be overloaded with a difference only in the type of the return variable.   True   False   7. A method declaration must always contain the access level.   True   False