Bitwise operations and SHIFT operations in Java

To facilitate the operation of the BITS, Java provides us with the following four bits operators:

& Bitwise AND

| Bitwise OR

^ Bitwise XOR OR

~ Bitwise REVERSE

There are three shift operators in Java:

Left shift:<< discard the highest bit, 0 fill the lowest bit; num << 1, equal to num multiplied by 2

Sign right shift:>> symbol bit unchanged, left with sign bit on the other side; Num >> 1, which is equivalent to num divided by 2

Unsigned right shift:>>> ignores the sign bit, and the empty space is padded with 0;

eg

Number x x<<2 x>>2 x>>>2

17 00010001 00¦01000100 00000100¦01 00000100¦01

-17 11101111 11¦10111100 11111011¦11 00111011¦11

Bitwise operations and SHIFT operations in Java