Data types for Java

Basic data types

Java basic data types are divided into 8 categories:

8-bit =1b (bytes)

Digital type:

Byte:8 bits per byte-128-127 (based on the number of digits, you can calculate it yourself)

Short:16 bit two bytes

Int:32 bit 4 bytes

Long:64 bit 8 bytes

Floating point type:

Folat:32 bit single precision

DOUBLE:64 Double Precision

Character type:

Char:16 bit

Boolean type:

Boolean:8 or 1-bit controversial (own idea: one can say, only 0 and 1 can be expressed, so I think it is 1 bit. Some people think it's based on the system memory)

Conversions between data types

Large type conversions to small types require casting such as: int x= (int) Double;
Conversion of floating-point type to integral type requires forced type conversion

Data types for Java