Type Casting

Converting one data type to another data type is known as type casting. 

Type Casting in Java is of two types -

- Implicit Type Casting ( Automatic Type Casting)

-Explicit Type Casting.

 

Implicit or Automatic Type Casting

  • In this, smaller(occupying less memory) data type is converted to bigger data type which is also known as widening.
  • This is done implicitly by JVM.The Lower size is widened to higher size.
  • There is no data loss chance.
  • It is done by compiler therefore it is known as automatic type casting.
  • Example: byte b=30; int x=b; Here byte type is converted to int type.

 

Explicit Type Casting

  • In this, bigger data type is converted to smaller data type which is also known as narrowing.
  • The Higher size is narrowed to lower size.
  • There is data loss chance.
  • It is done by the user with the help of type cast operator i.e. ( ).
  • Example: int x=30; byte b=(byte)x; Here int type is converted to byte type.