Why String addition using + allows moved to new address in java?

Question

I have got some information that string addition using + allows moved to new memory address in java but in case for int it is not happening why?

means

String a="fi-rstname";
a=a+" "+lastname;

a+" "+lastname moves to the new address instead of address of a

but for

 int a=22;
a=a+2323;

a+2323; vale does not move to the new address for addition why?

`int`s are primitives. Their values are not stored at _memory address_ (aka heap). — Seelenvirtuose, Jun 08 '17 at 11:56
Also, [Immutability of Strings in Java](https://stackoverflow.com/questions/1552301/immutability-of-strings-in-java) — Bernhard Barker, Jun 08 '17 at 11:56

score 1 · Accepted Answer · answered Jun 08 '17 at 11:54

String is immutable in Java. You can't change the content of immutable field after initialization. That is the reason, you create a new memory case.

You can get more information in this post : String is immutable. What exactly is the meaning? that explain well why String is immutable.

score 0 · Answer 2 · answered Jun 08 '17 at 11:55

0

Because String is immutable so each time you make change in string it'll create new object

in int we can make changes because primitive datatype is mutable(changeable).

answered Jun 08 '17 at 11:55

2 Answers2