Answer:

First  value of the local var: 7 
First  value of the parameter: 7
Second value of the parameter: 100
Second value of the local var: 7

Returning a Value

Once a value has been copied into an invoked method the invoked method can use the copy or change the copy. But these changes do not affect any variable inside the caller. How can a method send a value back to the caller? Examine the following:

To return a single value to the caller, an invoked method can use the return statement along with the value to be returned.

class SimpleClassTwo
{
  public int twice( int x )
  {
    return 2*x;
  }
}

class SimpleTesterTwo
{
  public static void main ( String[] args )
  {
    int var = 7;
    int result = 0;

    SimpleClassTwo simple = new SimpleClassTwo();

    System.out.println("First  value of result: " + result );    
    result = simple.twice( var );
    System.out.println("Second value of result: " + result );    
  }
}

QUESTION 5:

Now what is the output of the program?

First  value of the result: 
Second value of the result: