simple question with variable declaration and reset variable to init state

simple code

 public static void main(String[] args) {
// TODO code application logic here
System.out.println("test");
final double PER_INCH=2.54;
Integer a=10;
while (a>6)
{
System.out.println(a);
a--;
}
Integer salary=1000;
System.out.println(a);
System.out.println(salary+a);
}

why variable is a=6 and not 10 in the last 2 lines?
Is it possible to reset variable a as it was declared a=10?

run:
test
10
9
8
7
6
1006

[fred rosenberger]

because you are changing it in your loop on line 10.

and if you want to reset it to 10, just put in

a = 10;

alternatively, you could copy the value of a to some temp variable, use that in your loop, and a would remain unchanged.

[Daryl Cofer]

In your code you have this block:

Integer a=10;
while (a>6)
{
System.out.println(a);
a--;
}

What line 5 says is:
1. Take variable a
2. Subtract 1 from it
3. Store whatever that number is into a.

So basically the reason that a does not equal 10 at the end of your program is because it is being overwritten each time by line 5 in the code block above.