整数Java上的布尔逻辑非运算符

Question

是否有一个方法接受16位无符号整数，并对其执行布尔逻辑NOT运算。

Answer 1

The bitwise negation-operator is ~ . Example:

int i = 6;
System.out.println(~i);  // Prints -7

If you want to treat the integer as an unsigned 16-bit integer (ie disregard from the most significant 16 bits) you should do

public static int u16neg(int i) {
    return ~i & 0xFFFF;
}

Example:

System.out.println(u16neg(0b00000000_00000000_00000000_00000110)); // 65529
System.out.println(       0b00000000_00000000_11111111_11111001);  // 65529