Conversion : NumericPromotion

public class NumericPromotion {

    public static void main(String[] args)
    {
        char char1 = 1, char2 = 2;        short short1 = 1, short2 = 2;        int int1 = 1, int2 = 2;        float float1 = 1.0f, float2 = 2.0f;
        // char1 = char1 + char2;      // Error: Cannot convert from int to char;        // short1 = short1 + short2;   // Error: Cannot convert from int to short;        int1 = char1 + char2;          // char is promoted to int.        System.out.println(" int1 = char1 + char2       : "+int1);        int1 = short1 + short2;        // short is promoted to int.        System.out.println("int1 = short1 + short2      : "+int1);        int1 = char1 + short2;         // both char and short promoted to int.        System.out.println("int1 = char1 + short2       : "+int1);        float1 = short1 + float2;      // short is promoted to float.        System.out.println("float1 = short1 + float2    : "+float1);        int1 = int1 + int2;            // int is unchanged.        System.out.println("int1 = int1 + int2          : "+int1);

    }
}