public class Test012 { public static void main(String args[]) { String s0 = new String("Java"); String s1 = s0.trim(); String s2 = s0.substring(0, 4); String s3 = s0.toString(); System.out.println(s0 == s1); System.out.println(s0 == s2); System.out.println(s0 == s3); } } The Answer to this is actually true true true The first and the Third case is understandable, but in the second case that is "substring" even the docs mention that a new String is returned.(though there is no mention about such an example!!). Please explain, how can the second case return a true?
That is a fluke of a particular implementation - obviously it sees that the start and end correspond exactly to the existing string and just returns the existing string. Similar to the way trim returns the existing string if there are no characters to trim. You should not get any questions that depend on a fluke of implementation. Bill
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