String immutable class

Question

where is the initialized obj of String s="hello";

Class A{
public static void main(String[] args){
String s="hello";
s=s.concat(" world");
System.out.pruntln(s);
}

Above this prgmm ' s ' is a immutable class ,then i will assign value . The output is hello world . Its create a new obj . So where is the initialized obj . its gone or replace ? who can pointing to "hello"?

Answer 1

It's in the stack, so after the scope it doesn't exist.