Seasoned Java developers rarely if ever use new String(String), but the problem arises in other cases as well. For example:
String hello = "Hello"
String hell = hello.substring(0, 4);
System.err.println("Hell" == hell); // should print "false".
(Most String instances in a real-world applications are formed either by taking a substring of some other String, or by constructing it from an array of characters. Very few applications will only use String instances created as literals.)
