tutorial_08.java

class Driver {
    public static void main(String[] args) {

        // addition
        int result01 = 11 + 5; // 16        

        // subtraction
        int result02 = 11 - 5; // 6

        // multiplication
        int result03 = 11 * 5; // 55

        // division
        int result04 = 11 / 5; // 2   -integers cannot contain decimals, so they are removed (not rounded up or down)
        int result05 = 10 / 5; // 2   
        int result06 = 3 / 5; // 0   

        double result07 = 11 / 5; // 2.0 -integers cannot contain decimals, but storing it as a double will add on .0
        double result08 = 11.0 / 5.0; // 2.2 
        double result09 = 11 / 5.0; // 2.2 -integer 11 will be converted into a double 11.0 in this operation
        double result10 = 11.0 / 5; // 2.2 -integer 5 will be converted into a double 5.0 in this operation

        // modulus 
        int result11 = 11 % 5; // 1   -5 goes into 11 two times with '1' left over
        int result12 = 24 % 6; // 0   -6 goes into 24 four times with '0' left over
        int result13 = 31 % 4; // 3   -4 goes into 31 seven times with '3' left over
        int result14 = 5 % 7; // 5   -7 goes into 5 zero times with '5' left over

        // power
        double result15 = Math.pow(2, 3); // 8.0  -two cubed
        double result16 = Math.pow(4, 0); // 1.0  -four to the power of zero
        double result17 = Math.pow(243, 0.2); // 3.0  -the 5th root of 243
        double result18 = Math.pow(25, (1.0 / 2.0)); // 5.0  -square root of 25
        double result19 = Math.sqrt(25); // 5.0  -square root of 25

        /** 
         * Auto Casting: 
         *      If a larger primitive data type performs an operation with another smaller primitive data type, it will automatically cast
         *      the smaller primitive data type to the larger data type. When it can it will default to integer for numbers, and double for numbers with decimals.
         * Example: 
         *      (int)5 + (double)6 = (double)5 + (double)6
         *      (short)3 - (byte)25 = (short)3 - (short)25
         *      (int)10 * (long)135 = (long)10 * (long)135         * 
         *      (long)30 / (float)5f = (float)30f / (float)5f
         *      (byte)80 - (int)50 * (double)20 = (double)80 - (double)50 * (double)20
         */

    }
}