Java Datatypes

‹‹ Previous Next ››

Java Datatypes

Datatype is used to store user data.
Datatype is used to specify type of data to be stored. If data is of integer type, then datatype should be of integer type.
Datatype facilitates operations that are applicable on data. For example, integer datatype facilitates arithmetic operation on the data.
Datatype defines name of the variable that stores user data as well as type of data that is being stored in the variable.
Java defines many basic datatypes for storing the data which are listed below.

Datatypes

Byte datatype

It is signed integer.
Size of datatype is 8 bits.
Example
```
	       byte a = 10;
	 
```

Short datatype

It is signed integer.
Size of datatype is 16 bits.
Example
```
	      short b=100;
	
```

Integer datatype

It is signed integer.
Size of datatype is 32 bits.
Example
```
		  int c = 20000;
	
```

Long datatype

It is signed integer.
Size of datatype is 64 bits.
Example
```
		long d = 200000;
	
```

Float datatype

It stores number with decimal point.
It is single precision floating point datatype.
Example
```
		float k = 12.5;
	
```

Double datatype

It stores number with decimal point.
It is double precision floating point datatype.
Example
```
		double l = 12356.67;
	
```

Boolean datatype

It stores two values only.
It stores either True or False.
Example
```
		boolean n = True;
	
```

Character datatype

It stores character data.
Size of datatype is 16 bits.
It uses Unicode to represent characters.

Example

		char p = 'A'; 	// Use single quotes symbol for enclosing character content.

Example (All datatypes)

class datatype {

   public class static void main(String args[])
	{
		byte a = 10;
		short b = 100;
		int c = 20000;
		long d = 200000;
        		float k = 12.5;
		double l = 12356.67;
		boolean n = True;
		char p = 'A';
		System.out.println("value of byte is " + a);
		System.out.println("value of short is " + b);
		System.out.println("value of int is " + c);
		System.out.println("value of long is " + d);
		System.out.println("value of float is " + k);
		System.out.println("value of double is " + l);
		System.out.println("value of boolean is " + n);
		Syatem.out.println("value of char is "+ p);
	}
}

Output of the program

value of byte is 10
value of short is 100
value of int is 20000
value of long is 200000
value of float is 12.5
value of double is 12356.67
value of boolean is True
value of char is A

‹‹ Previous Next ››