about Java data type

 Java data type

 

We usually store data in computers using some data type.

For example, video files are stored as mp4 and audio files as mp3. Because without it, we cannot use any data for processing. Therefore, we have to deal with data while creating Java programs, so we use several types of data.

There are mainly three parts to this data type

01. Integer numbers

02. Decimal numbers

03. Binary numbers

 

01. Integer numbers

                       

Type	Size	Minimum Value	Maximum Value	Range	Example
Long	64	-263	263-1	All numeric value	Not end
Int	32	-231	231-1	All numeric value	I=1234567
Short	16	-215	215-1	+32767 to -32767	S=3245
Char	16	0	216-1	All Unicode	C=’123abc’
Byte	8	-128	127	+127 to -127	Byte =65

 

02. Decimal numbers

Type	Size	Maximum value	Minimum value	Range	Example
Double	64	-21074	-21074-1	All numeric numbers	F=1024.45
float	32	-2149	-2149-1	All numeric numbers	X=625.45

 

03. Binary numbers

 

Type: Boolean

Size :1

Range: (1,0) or true /false

 

String

String is a Pre Build class, not a data type but this class we use as a data type which is called as a nonprimitive data type. This data type especially any data can be assigned.

Example:

String s1=”123456789”;

String s2=”abcdefghijk”;

String s2=”!@#$%^&*”;