When String is immutable, what happens to original content ?

If String is immutable and with 'final' and reference alone changed, when we make change in content, what will happen to old object ?

i.e.String name="John";

name="smith";

Whether String object "John" will be kept in memory or where it will go after change?

[334 byte] By [baskarka] at [2007-11-26 23:49:17]