Strings That Cannot Be Changed Are Said to Be Immutable

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The Answer is When you reference a String, you actually are accessing the address of the characters that make up the String. If you subsequently assign a new value to the String, the address held by the original String is altered . The String now holds a new address where the characters are stored. The original String is still in memory, but the String no longer holds its address. Eventually, a part of the Java system called the garbage collector discards the String characters. Strings, therefore, are never actually changed; instead, new Strings are created and String references hold the new addresses. Strings that can't be changed are called immutable.

Strings That Cannot Be Changed Are Said to Be Immutable

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