Primitive Data Types

• There are 8 Primitive Data Types available in Java.

 

1. Integer:

• Integers have four types. It includes byte, short, int and long which are for whole-valued signed numbers.
• This values can be either be positive or negative.

Type	Size	Range	Example
Byte	8 bits	-128 to +128	byte a, b;
Short	16 bits	-32,768vto +32,767	short c, d;
Integer	32 bits	-2,147,483,684 to +2,147,483,647	int i;
Long	64 bits	-9223372036854775808 to +9223372036854775807	long x,y;
Char	16 bits	0 to 65,536 char is only unsigned	char c;

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2. Floating-Point Type:

• Float is used to store numbers with decimal point.
• There are two floating point data types. That are float and double.

Name	Size	Range	Example
Double	32 bits	1.7e-308 to 1.7e+308	Double a,b;
Float	64 bits	3.4e-038 to 3.4e+038	Float a, b;

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3. Characters:

• It is used for storing individual characters.
• The character type has 16-bits of precision and it is unsigned.
• The range of char is 0 to 65,536 and there are no negative characters.
• Java uses Unicode to represent characters. Unicode defines a fully international characters set that can represent all of the characters in all human languages.

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4. Booleans:

• Boolean data types hold either a true or false value.
• These are not stored as numeric values and cannot be used as such.
• This is the type returned by all relations operators.

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