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A String based puzzle for you.
The following program
String te = "te", st = "st";
String username = te + st;
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 work out why?
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