Java – what happens to the lost string object

Line 1: String x = "Java";

Line 1: String x = "Java";
Line 2: x.concat(" Rules!");
Line 3: System.out.println("x = " + x);

The output is "x = Java"

Line 1: create a new string object, give the value "Java", and reference x to it

Line 2: the VM creates a second string object with a value of "Java rules!" But there is no mention of it The second string object is about to be lost; You can't get it

Since these string objects are created in heap, the second object will be garbage collected

Solution

Enosh is immutable in Java strings, so you should allocate

x = x.concat(" Rules");

For the second line, then it will work

The second object will eventually be GC'd because no entity references it