**Typecasting** is used to temporarily change the data type of a value. There are two types of data in Java:

1. [Primitive data types](https://www.educative.io/answers/primitive-data-types-in-java) 
2. [Non-primitive data types](https://www.educative.io/answers/non-primitive-data-types-in-java)

Java supports widening casting and narrowing casting.

# Widening casting
**Widening casting** changes a smaller data type to a larger data type. For example, `byte` &rarr; `short` &rarr; `char` &rarr; `int` &rarr; `long` &rarr; `float` &rarr; `double`.

>This type of casting is usually automatic; you do not need to use`()`.



# Narrowing casting
**Narrowing casting** changes the data type from a larger data type to a smaller data type. For example, `double` &rarr; `float` &rarr; `long` &rarr; `int` &rarr; `char` &rarr; `short` &rarr; `byte`.


class myClass {
    public static void main( String args[] ) {
    int number = 7;
    double doubleNumber = number; // Widening casting: int to double

    System.out.println(number);         // 7
    System.out.println(doubleNumber);   // 7.0
    }
}


class myClass {
    public static void main( String args[] ) {
    double number = 7.3;
    int intNumber = (int) number; // Narrowing casting: int to double

    System.out.println(number);      // 7.3
    System.out.println(intNumber);   // 7
  }
}

Typecasting in Java

Typecasting is used to temporarily change the data type of a value. There are two types of data in Java:  Primitive data types Non-primitive data types  Java supports widening casting and narrowing casting. 

Typecasting in Java

Widening casting

Narrowing casting

Code

Widening casting

Narrowing casting code