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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
... to a Integer (capital I) the compiler emits:
Integer b2 =Integer.valueOf(127)
This line of code is also generated when you use autoboxing.
valueOf is implemented such that certain numbers are "pooled", and it returns the same instance for values smaller than 128.
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edited Apr 5 '17 at 6:43
uchuugaka
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edited May 24 '13 at 6:21
Steven Penny
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