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SHShahadat HossainAssistant Professor · DIU

Java Type Casting

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

Widening Casting

Widening casting is done automatically when passing a smaller size type to a larger size type:

Type Casting, figure 1

Narrowing Casting

Narrowing casting must be done manually by placing the type in parentheses in front of the value:

Type Casting, figure 2