[Javase] binary conversion (binary decimal hexadecimal octal)

Decimal to binary, in addition to 2 Operations

Decimal 6 to binary is (note from right to left to write, use a formula from bottom to top)

Binary to decimal, multiply by 2 procedure

Binary decimal 0*2 1 - Time Square of 0 Square +1*2 +1*2 's 2 - Time Square =6

Correspondence relationship

0 1 0 1 0 1

32 16 8 4 2 1

Add up the number of 1 corresponding positions, so it's

One byte 1 1 1 1 1 1 1 1 The maximum value is 255

Addition Operation 5 + 4=9, turning into binary operation

1 0 1

+1 0 0

1 0 0 1

Other binary conversions

Octal can be thought of as three bits for one person, for example: 0101 1010

0 0 1 0 1 1 0 1 0

1 3 2 so octal is the

Hexadecimal can be thought of as four bits for one person, for example:

0 1 0 1 1 0 1 0

5 A so hex is 5A

Negative binary binary

An integer account of Eight bytes, binary counter +1 binary

The highest digit of the negative number is 1 .

[Javase] binary conversion (binary decimal hexadecimal octal)