Java中的“~”运算符是什么

Question

有人可以帮忙解释一下“~”在 Java 中的作用吗？我搜索但找不到答案，因为我不知道 ~ 叫什么。提前致谢。下面是一个名为 Snow 的开源隐秘程序的示例。

private int     tabpos (int n) {
    return ((n + 8) & ~7);
}

Answer 1

来自 Oracle 文档：

The unary bitwise complement operator "~" inverts a bit pattern; it can be applied to any of the integral types, making every "0" a "1" and every "1" a "0". For example, a byte contains 8 bits; applying this operator to a value whose bit pattern is "00000000" would change its pattern to "11111111".

参考：Bitwise and Bit Shift Operators