e) [2 pts each] State the execution result (compile error, runtime error - ClassCastException, or no problem) for the following statements and explain the reason for the error cases. Each case is independent from each other. Suppose the method amethod is defined in the Class4. i) obj.anethod(); ii) Interface3 obj5 = obj2; iii) ((Class3) obj3), aMethod(); iv) $(($ Class4 $$ obj4 $)$, amethod ( ) ; f) [4 pts] Suppose that method "void m2()\{U};" is in Abstract1. Which classes have to implement it? CS.VS.951|