An overview of the primitive java data types extended with the possible range of values (source: merge of the official sun pages and cafeaulait).
| Keyword | Description | Size/Format | Values from-to |
|---|---|---|---|
| Integers | |||
byte |
Byte-length integer | 8-bit two's complement | -128 to 127 |
short |
Short integer | 16-bit two's complement | -32,768 to 32,767 |
int |
Integer | 32-bit two's complement | -2,147,483,648 to 2,147,483,647 |
long |
Long integer | 64-bit two's complement | -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807 |
| Real numbers | |||
float |
Single-precision floating point | 32-bit IEEE 754 | 1.40129846432481707e-45 to 3.40282346638528860e+38 (positive or negative) |
double |
Double-precision floating point | 64-bit IEEE 754 | 4.94065645841246544e-324d to 1.79769313486231570e+308d (positive or negative) |
| Other types | |||
char |
A single character | 16-bit Unicode character | 0 to 65,535 |
boolean |
A boolean value (true or false) |
true or false | 0 or 1 |
