A String based puzzle for you. The following program String te = "te", st = "st"; // "test".length(); String username = te + st; username.intern(); System.out.println("String object the same is: " + (username == "test")); prints under Java 7 update 7. String object the same is: true but uncomment the "test".length(); line, or run with Java 6 and it prints String object the same is: false Can you w

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