11.  What is difference between Path and Classpath?

12.  What are local variables?

13.  What are instance variables?

14.  How to define a constant variable in Java?

15.  Should a main() method be compulsorily declared in all java classes?

16.  What is the return type of the main() method?

17.  Why is the main() method declared static?

18.  What is the arguement of main() method?

19.  Can a main() method be overloaded?

20.  Can a main() method be declared final?