Michael in Java October 8, 2009

Java primitive data type sizes for byte, short, int, long, float, double and char

A handy list for Java data types and sizes

Integer Data Types

Data Type	Size	Digits	Min	Max
byte	8-bit signed	3	-128	127
short	16-bit signed	5	-32,768	32,767
int	32-bit signed	10	-2,147,483,648	2,147,483,647
long	64-bit signed	19	-9,223,372,036,854,775,808	9,223,372,036,854,775,807

Floating Point Data Types

Data Type	Size
float	single-precision 32-bit IEEE 754 floating point
double	double-precision 64-bit IEEE 754 floating point

Boolean Data Types

Data Type	Values
boolean	true or false

Character Data Types

Data Type	Min	Max
char	u0000 or 0	uffff or 65,535

Default Values

Data Type	Default Value
byte	0
short	0
int	0
long	0L
float	0.0f
double	0.0d
char	‘u0000’
boolean	false
Any Object(s)	null

References:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/datatypes.html

Written By

Michael

Tags

byte char data type default value digits double float int Java long max min primitive data types short size

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