Primitive Data Types in Java

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

Type	Explanation	Default Value, Minimum, Maximum			Example
byte	A 8-bit (1-byte) integer value	0	-127	127	byte b = 1;
short	A 16-bit (2-byte) integer value	0	-32,768	32,767	short s = 10;
int	A 32-bit (4-byte) integer value	0	-2,147,483,648	2,147,483,647	int i = 32;
long	An 64-bit (8-byte) integer value	0L	-263	263-1	long l = 100L;
float	A 32-bit (4-byte) floating-point value	0.0f			float f = 150.5f ;
double	A 64-bit (8-byte) floating-point value	0.0d			double d = 155.5d;
boolean	A true or false value	false
char	A 16-bit character using the Unicode encoding scheme	‘\u000’