Java integers account for a few bytes, and the binary representation of negative numbers, and the difference between the logical operators of Java >> and >>>

How many bytes does a Java integer occupy?
A: 4 bytes, a total of 32 bits1 bytes accounted for 8 bits (1B (byte) = 8 bit)Therefore, the type and byte correspond to the following byte1short2
Char 2 int 4Float 4
Double 8double 8----------------------------------------------------------------------- The following is a size output with System.out.println-----------------------------------------------------------

Byte.size //8

Short.size //16
Character.size//16

Integer.size //32
Float.size); //32

Double.size //64
Long.size //64

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Binary representation of integer negative numbers: in a computer, negative numbers are expressed in the form of a positive complement
complement = inverse code plus 1, negative number is a positive complement

Like 1:00000000000000000000000000000001.

and -1:11111111111111111111111111111111

Maximum value: 01111111111111111111111111111111 2147483647 2 of 31 square minus one

Minimum value : 10000000000000000000000000000000-2147483648 2 of 31-Time Square

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logical operators of Java >> and >>> differences>> is unsigned right shift>>> is the sign bit right shiftExample:11111111111111111111111111111100:-4
11111111111111111111111111111111: -4>>2-1
00111111111111111111111111111111: -4>>>2 1073741823 

Java integers account for a few bytes, and the binary representation of negative numbers, and the difference between the logical operators of Java >> and >>>