Range instance code of integer value in Java

No more nonsense. I'll post the code directly to you. The specific code is as follows:

What is the reason?

　　1。 When compiling Java, integer a = 100; Translated as - > integer a = integer valueOf(100);

　　2。 The comparison is still the comparison of objects

　　3。 In JDK source code

And

Here, in order to improve efficiency, Java initializes integer objects between - 128 -- 127, so the assignment is the same object in this range.

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summary

The above is the example code of the range of integer values in Java introduced by Xiaobian. I hope it will help you. If you have any questions, please leave me a message, and Xiaobian will reply to you in time. Thank you very much for your support for the programming tips website!