Data Types in java
DataTypes is used to store the different types of data and size like a "int,float and String ..etc."
Types of Data Type
- Primitive DataTypes
- Non Primitive DataTypes.
1. Primitive DataTypes
Primitive DataTypes has a specific size and value.Example(int,float,char,..etc).This datatypes are limited size.
| Data Types | Size | Limit |
|---|---|---|
| byte | 1 byte | -128 to 127 |
| short | 2 byte | -32,768 to 32,767 |
| int | 4 byte | -2,147,483,648 to 2,147,483,647 |
| float | 4 byte | It's store 5 to 6 decimal points. |
| double | 8 byte | It's store 15 decimal points. |
| char | 2 byte | It's store single character. |
| long | 8 byte | -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 |
| boolean | 1 byte | It's store true or false |
byte
public class Main
{
public static void main(String[] args)
{
byte a=1;
}
}
short
public class Main
{
public static void main(String[] args)
{
short a=1;
}
}
int
public class Main
{
public static void main(String[] args)
{
int a=111;
}
}
float
public class Main
{
public static void main(String[] args)
{
float f=1.2f;
}
}
double
public class Main
{
public static void main(String[] args)
{
double d=1.232151;
}
}
char
public class Main
{
public static void main(String[] args)
{
char c='z';
}
}
long
public class Main
{
public static void main(String[] args)
{
long l=456165486l;
}
}
boolean
public class Main
{
public static void main(String[] args)
{
boolean a=true;
}
}
2. Non Primitive DataTypes
Non Primitive DataTypes is a user declare.Its size and value is not specified.
| Data Types | Size |
|---|---|
| String | Not declare |
| Array | Not declare |
| Class | Not declare |
| Interface | Not declare |
| etc... | Not declare |
String
public class Main
{
public static void main(String[] args)
{
String str="mycrazycoding";
}
}