Run the ScopeOfVariables.java program and report the result. Then remove the comments in line 6, 7, 9, 10, 15 and 16 to check the value of x in different methods. Report the result.

1. What is the value of x after calling update method? Explain why.

2. modify update method so that it returns updated value of x and you see the

   changes on x.

3. Comment out line 14 and remove the comment of line 4 and run the program.

   What happens? Explain why.

4. Comment out line 4 and remove the comment of line 2 and run the program.

   What is the value of x after calling update method? Explain why.

5. Comment out line 2 and line 14 and run the program. What is the value of x

   after calling update method? Explain why.

6. Compare the modifiers in line 2 and line 14.

7. Remove static modifier in line 2 and compile and run the code. What happens and why?

code:

public class ScopeOfVariables { //final static int ADD = 15; public static void main(String []args){ //final int ADD = 5; double x = 10; //System.out.print("In main before updating - "); //System.out.println("x = " + x ) ; update(x); //System.out.print("In main after updating - "); //System.out.println("x = " + x) ; } public static void update (double x){ final int ADD = 5; //System.out.print("In update before updating - "); //System.out.println("x = " + x ) ; x += ADD; System.out.print("In update after updating - "); System.out.println("x = " + x ) ; } }