FInal field cannot be assigned

[ravian]

I have following code which raises exception:

Code:

public class Test {
    static final int STACK_EMPTY = -1;
    static int STACK_FULL = 10;
    public static void main(String[] args) {
    STACK_FULL = 12;		
    STACK_EMPTY = 2;
    }
}

Exception:

Code:

The final field Test.STACK_EMPTY cannot be assigned

If you cant reassign value to a final attribute, then what is the use of it?

[staykovmarin]

Its used for constants (note that constants, by style, should be all capital letters, separated by underscores). For something you never want to change by accident in your code:

Code:

public final MAX_NUMBER_USERS = 10;

final will just ensure that that number is never changed.

[gulapala]

Please know the difference when the final keyword is used

1. with variables.
2. with methods.
3. with classes.

It would help you.

[ravian]

Thanks all of you.
Its clear in my mind now. I feel I am improving now