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Question on ==, equals()

 
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When run it prints - truetruefalsetrue. I thought it should print truetruetruetrue.
Someone please explain.
 
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Up to 127 it will return true for == comparison, ans is written Integer.java source file.

See the method Integer.valueOf(int) in Integer.java file.
 
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from -128 to 127 to be precise....
 
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This remains same for Byte and Short. As specified above by Ankur and Punit that from -128 to 127 you will get same results using == and equals function.

This caching is done for performance purpose. Just try to look at the source code and you will understand it better.
 
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