Java Type Casting or Type Conversion
Type casting is when you assign a value of one primitive data type to another type.
In Java, there are two types of casting:
Widening Casting (automatically) – converting a smaller type to a larger type size
byte -> short -> char -> int -> long -> float -> double
Narrowing Casting (manually) – converting a larger type to a smaller size type
double -> float -> long -> int -> char -> short -> byte
class HelloWorld
{
public static void main(String args[])
{
int myInt = 9;
double myDouble = myInt; // Automatic casting: int to double
System.out.println(myInt); // Outputs 9
System.out.println(myDouble); // Outputs 9.0
double myDouble = 9.78;
int myInt = (int) myDouble; // Manual casting: double to int
System.out.println(myDouble); // Outputs 9.78
System.out.println(myInt); // Outputs 9
}
}