Java Casting

Type Casting is used for converting a primitive data type to another type.

For example, we have a requirement to convert an int data type to a double data type we can perform it with the help of type casting.

Java provides us with two types of casting:

1. Widening Casting

2. Narrow Casting

Widening Casting:

It is a type of casting where we can convert a small data type to a larger data type automatically.

Let us see how:

If we have a requirement to convert an int to double:

We just need to declare an int variable first followed by the double let us see how.

int myInt = 9;

double myDouble =  (myInt);

Full code:
public class Main
{
	public static void main(String[] args) {
    int myInt = 9;
double myDouble =  (myInt);

  
  System.out.println(myInt);
    System.out.println(myDouble);

	}
}

Narrow Casting:

It is a type casting which we use to convert a small data type to a larger data type manually by adding parenthesis.

Let us see how:

Now let me just declare a double followed by int datatype.

double myDouble  = 9.5d; 

int myInt = (int)myDouble;

Full Code:
public class Main
{
	public static void main(String[] args) {
    double myDouble = 9.5d;
  int myInt =  (int)myDouble;

  
  System.out.println(myDouble);
    System.out.println(myInt);

	}
}