what is the advantage of string object as compared to string literal

Question

i want to know where to use string object(in which scenario in my java code). ok i understood the diff btwn string literal and string object, but i want to know that since

Answer 1

Don't use a new String object if you know what the string is. For example:

String str = new String("foo"); // don't do this

You are thus creating an unnecessary object - once you have a String object created from the literal, and then you create another one, taking the first one as constructor argument.