INTRODUCTION TO CLASSES AND METHODS ONE LINER 06

INTRODUCTION TO CLASSES AND METHODS ONE LINER 06

1) When must the main class and the file name coincide?
Ans :When class is declared public.

2) What are different modifiers?
Ans : public, private, protected, default, static, trancient, volatile, final, abstract.

3) What are access modifiers?
Ans : public, private, protected, default.

4) What is meant by "Passing by value" and " Passing by reference"?
Ans : objects – pass by referrence
Methods - pass by value

5) Is a class a subclass of itself?
Ans : A class is a subclass itself.

6) What modifiers may be used with top-level class?
Ans : public, abstract, final.

7) What is an example of polymorphism?
a)Inner class             
b)Anonymous classes
c)Method overloading                  
d)Method overriding
Ans : c