Java中的管道(|)运算符 [英] Pipe (|) operator in Java

问题描述

我在Java中有以下语句:

I've got this statement in Java:

System.out.println(3|4); 

为什么输出7?

推荐答案

这是按位或运算.它在二进制级别上进行修改.

It's a bitwise OR operation. It's modifying things at a binary level.

             011                     3
in binary: | 100     in decimal:  |  4
             ___                   ___
             111                     7

使用科学模式打开Windows calc.您可以在十进制和二进制(和十六进制)之间切换，并执行按位运算，包括or，and，xor等.

Open Windows calc using scientific mode. You can flip between decimal and binary (and hex) and perform bitwise operations including or, and, xor, etc.

要按位排列或在您的头部或纸上进行比较，请比较同一序数的每个数字.如果任一数字为1，则该序数的结果将为1.

To do a bitwise or in your head or on paper, compare each digit of the same ordinal. If either number is a 1, the result at that ordinal will be 1.

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