IdentityCheck
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Revision as of 20:37, 9 March 2009
Is there an externally observable difference between following programs? public static String sayHello() {
return "Hello World!";
} public static void sayHello() {
return "Hello" + " World!";
}
Of course, there is! Just call the method twice:
assert sayHello() == sayHello();
The first version of the method passes the IdentityCheck test. The second does not. There are also other differences in MemoryAllocations as well as StringsUsedInConstantPool.
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