Java Primitive Data Types

There are 8 Primitive data types in Java, you can categorize them into 4 groups.

1. Integer data types: byte, short, int & long
2. Floating Data types: float, double
3. Character Data types: char
4. Boolean Data types: boolean

Data Type	Size	Default Value	Range
byte	8-bit	0	-128 to 127
short	16-bit	0	-32,768 to 32,767
int	32-bit	0	-2^31 to 2^31-1
long	64-bit	0L	-2^63 to 2^63-1
float	32-bit	0.0f
double	64-bit	0.0d
boolean	NA	'\u0000'	NA
char	16-bit	false	NA

Following is a sample program with using all primitive datatypes

public class PrimiteDataTypes {

	public static void main(String[] args) {

		byte byteVal = 127;
		short shortVal = 32767;
		int intValue = 2147483647;
		long longValue = 9223372036854775807L;

		float floatValue = 1.5F;
		double doubleVaue = 12.678;

		char charValue = 'f';

		boolean booleanValue = true;

	}
}