// examples of using conditionals in Java
public class Condition {

	public static void main(String[] args) {
	

        /* nested if-else */
        boolean condition1 = true;
        boolean condition2 = false;

        if (condition1) {
            // nesting lets us add code appropriate for condition1
            // whichever way condition2 comes out.
            System.out.println("condition 1 is true");
            // then check condition2
            if (condition2) {
                System.out.println("both are true");
            } else {
                System.out.println("1 but not 2");
            }
        } else {
            System.out.println("condition 1 is false");
            if (condition2) {
                System.out.println("2 but not 1");
            } else {
                System.out.println("both false");
            }
        }
        System.out.println();

        /* conditionals with booleans */
        // does the same thing as the previous
        // but no nesting for condition1 independent of condition2
        if (condition1 && condition2) {
            System.out.println("both are true");
        } else if (condition1) {
            System.out.println("1 but not 2");
        } else if (condition2) {
            System.out.println("2 but not 1");
        } else {
            System.out.println("both false");
        }
        System.out.println();

        /* boolean operators */
        int p = 6;
        int q = 1;
        // setting boolean variables to boolean expressions
        boolean b = p == 1;
        boolean d = q < 5 || b;

        if (b && d) {
            System.out.println(" both true");
        }
        // demorgan's law
        if (!(!b || !d)) {
            System.out.println(" same thing");
        }

        if (b || d) {
            System.out.println(" at least one true");
        }
        // demorgan's law
        if (!(!b && !d)) {
            System.out.println(" same thing");
        }
        System.out.println();

        /* switch */
        int val = 4;
        // only works on int, char
        switch (val) {
            case 1:
            case 2:
            case 3:
                // do if 1, 2, 3
                System.out.println("one, two, or three");
            case 4:
            case 5:
                // do if 1, 2, 3, 4, 5
                System.out.println("five or less");
                break; // no more cases included
            case 7:
                // only for case 7
                System.out.println("lucky seven");
                break;
            default:
                // all other cases
                System.out.println("some number");
        }
        System.out.println();

        String productCode = ""; // String, int, char
        double total = 0;

        switch (productCode) {
            case "DLXTALL":
                System.out.print("Deluxe ");
                total += 1.5;
            // continue to next case
            case "TALL":
                System.out.println("Tall");
                total += 6;
                break; // no more cases
            case "SPMIN":
                System.out.println("Super ");
                total += .8;
            // continue to next case
            case "MINI":
                System.out.println(" Mini");
                total += 4;
                break; // no more cases
            default:
                System.out.println("Other Product ");
                total += 5;
                break; // decorative
        }

        /* Conditional operator */
        int x = 15;

        // determine result
        // iffy use of conditional op to do main calculation
        int result = (x > 10) ? 20 : 0;
        System.out.println(result);
        System.out.println();

        // equivalent if statement
        // easier to read, easier to add code to
        if (x > 10) {
            // can't add code like this with the operator
            //System.out.println("It was big");
            result = 20;
        } else {
            result = 0;
        }

        // add bonus if appropriate
        // better use of conditional op 
        // to handle minor part of more complex code
        boolean bonus = false;
        result = 54 * x * x + 13 * x - 123 + (bonus ? 100 : 0);
        System.out.println(result);
        System.out.println();

        // probably better way to do it:
        int bonusval = 100; // can set bonusval to whatever is appropriate
        result = 54 * x * x + 13 * x - 123 + bonusval;

        // format correctly for x singular or plural
        // smart use of conditional op 
        // to handle unimportant detail
        // not easy reading
        System.out.println("There " + ((x == 1) ? "is " : "are ") + x + " light" + ((x == 1) ? "" : "s"));
		
	}
}