Java Data types

I. Basic data types

Boolean char byte short int long float double

Boolean 8 bit

Char 16-bit 0-2^16-1

BYTE 8-bit -2^7-2^7-1

Short 16-bit -2^15-2^15-1

int 32-bit -2^31-2^31-1

Long 64-bit -2^63-2^63-1

Float 32-bit single-precision floating-point number can be assigned a byte short int long char to Float,java automatically converted

Double 64-bit

Short S1 = 1;S1 = s1 + 1; error

Need to cast, if it is S1 = +, is correct.

Short S1 = 1;s1+=1; correct

Equivalent to S1 = (short) (s1+1);

Java Data types