typeCasting.java

package BASICS;
@SuppressWarnings("unused")
public class typeCasting {
    public static void main(String RGS[]){
        int a=127;
        byte b=100;
        b=(byte)a; //EXPLICIT TYPE CASTING
        System.out.println(b);
        byte b_1=125;
        a=b_1; //IMPLICIT TYPE CASTING
        System.out.println(a);
        float f=5.6f;

        int x=(int)f;
        System.out.println(x);
        System.out.println("-----------------------");
        int a1=12;
        //byte k=a I can't do this
        //therefore I will use typecasting
        byte k=(byte) a1; //I've to use type casting
        System.out.println(k);
        //what if the integer value exceeds bytes range?,
        //the type casting will perform a modulus operation,
        //it will devide the int with bytes range i.e 256
        //and return the REMAINDER.
        //EG:
        int i=300;
        byte j=(byte)i;
        System.out.println(j); 
        //TYPE PROMOTION
        //when some ops are performed on two or more datatypes results in a value which
        //exceeds the range of the defined datatype of the operands
        //then JAVA promotes the result of a higher datatype(int).
        //EG:
        byte b1=10;
        byte b3=40;
        //let op be *, note b1*b3=400 which is way out of
        //bytes range, so javac will convert it to higher datatype(int).
        int res=b1*b3;
        System.out.println(res); 



    }
}