Type Conversion in java

Type Conversion

Java can perform type conversion automatically or perform explicit conversion.

Automatic Conversion :

    Also known as Widening conversion.

    It will take place if the following two conditions are met:

            1. Two types are compatible

            2. Destination type is larger than the source type

    Example : int to float, int to long

Explicit Conversion :

    Also known as Narrowing Conversion

    Numeric types are not compatible with char or Boolean.

    char and Boolean are not compatible with each other

    It will take place if the one of the following two conditions are met:

           1. Two types are not compatible

           2. Destination type is smaller than the source type

        Example : int to byte

        Example of int to byte explicit conversion:

        int a;

        byte b;

        b = (byte) a; // explicitly casting int to byte as byte is smaller than int data type.

        Range of a byte reduced modulo means The remainder of an integer division by the byte’s range

        256. If a=257 then b will be 1 as 257%256=1.