“>"是什么意思?符号在Java中意味着什么? [英] What does the ">>" symbol mean in Java?

问题描述

我在查看的某些代码中看到一行，上面写着(12 >> 1)-1).我打印出该值，结果为5.如果我将12更改为5，则结果为1.

I see a line in some code I'm looking at and it says (12 >> 1) - 1). I print that value out and it comes out as a 5. If I change the 12 to 5, it comes out as a 1.

">>"符号到底在做什么?

What is the ">>" symbol doing exactly?

推荐答案

12是 1100 (二进制).右移一位(>>是按位右移运算符)会产生

12 is 1100 in binary. A right shift (>> is the bitwise right shift operator) by one bit produces

1100 -> 0110 

结果是6.

因此，我们拥有了

6 - 1 = 5

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