Java Datatype
In Java, every variable and every expression has some Type.
Each And Every datatype Is clearly defined and every assignment should be checked by compiler For type compatibility.So, we can conclude that the Java language Is strongly typed language.
Java Is not considered as a pure Object Oriented Programming language because several book feature is not satisfied by java like.
Example: Operator Overloading Multiple Inheritance etc.
Byte
The byte data type have:
- Size : 1 Byte (8 bit)
- Max value : +127
- Min Value : -128
- Range is -128 to +127.
- The default value for byte is 0.
Example
class Byte {
public static void main(String[] args) {
byte a;
a = 124;
System.out.println(a);
}
}
Output : 124
Stream
1. Character Stream
2.Byte Stream
-If you handle data in term of stream either from the file are from are from the network
-File Support from and network support from are byte
Short
The Short is must rarely use data type in java.
The byte data type have:
- Size: 2 Byte (16 bit)
- Max value : +32767
- Min Value: 32768
- The range is -32768 to +32767.
- The default value for short is 0.
Example
class Short {
public static void main(String[] args) {
short a;
a = -250;
System.out.println(a);
}
}
Output : -250
Int
It is the most common data type in Java.
The byte data type have:
- Size: 4 Byte (32 bit)
- Max value : +2147483647
- Min Value: 2147483648
- Range is -231 to 231-1 or -2147483648 to +2147483647
- The default value for int is 0.
Example
class int {
public static void main(String[] args) {
int a = 500050;
System.out.println( a );
}
}
Output : 500050
long
Some time int data type range is may not sufficient for hold big value so on that case we should go for long type.
- Size : 8 Byte (64 bit)
- Max value : 263-1
- Min Value : -263
- Range is -263 to 263-1 The default value for long is 0.
Example
class long {
public static void main(String[] args) {
long a = 4356784L;
System.out.println(a);
}
}
Output : 4356784
float
Example
class float {
public static void main(String[] args) {
float a = 50.7f;
System.out.println(a);
}
}
Output : 50.7
double
Example
class double {
public static void main(String[] args) {
double a = 78.9;
System.out.println(a);
}
}