[FIXED] Strings are immutable in java but i can change its value inside a method, how?

Issue

In java, strings are immutable, so when i declare an instance String variable i can't chang its value in class level scope, however i amable to change its value inside a method, why?

public class AnotherBasic {
    String p ="Bye";
     p = "nknk";

    public  void testttt() {
        System.out.println(p);
        p = "5656";
        System.out.println(p);
    }

    public static void main(String[] args)
    {
        AnotherBasic ab = new AnotherBasic();
        ab.testttt();
    }
}

At "p = "ncinci" " throws me an error but It happily changes the value of p inside testttt() method. Why and How? 

Solution

I think you might have a slight misunderstanding of the immutability concept.

Let's say your String variable greeting is [H, E, L, L, O].

If you wanted to change your greeting, you can't add other letters or remove them from your word, like eg. greeting.add(O) to make it [H, E, L, L, O, O], because you can't change it's content, so it's immutable

The only way to change it is to make it so when you think about your greeting you think about a whole another word like [W, H, A, T, S, U, P], this means that you didn't change the HELLO word, you are just using another one.

Answered By - ndriqa
Answer Checked By - Marie Seifert (JavaFixing Admin)