Data types in Java

by Shekhar Sharma · July 31, 2015

Data types specifies the types of value and its size that can be stored in an identifier. There are 2 types of data types as given below.

Datatype	Description	Example	Default value
byte	Can be used for saving memory in large arrays.It is four times smaller than an int.	byte a =100	0
short	Can be used for saving memory in large arrays.It is two times smaller than an int.	short x=1000	0
int	int is generally use as default data type,unless there is memory concern	int x=1000	0
long	It is used when larger value than int is needed.	int x=100000L	0L
float	use it if needs to save memory in large arrays of floating point numbers.	int x=176.8f	0.0f
double	It is generally used as default value for decimal values.	int d=176.8	0.0d
boolean	Its 2 possible value are – true and false.	boolean name=true	false
char	Char data type is used to store any character.	char c =”A”	‘\u0000’

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