core4Operators

1package pkg1core;2 3/*4 * core4Operators.java5 * --------------6 * Arithmetic, relational, logical, bitwise, assignment, and ternary operators.7 *8 * EXPLANATION:9 *  - Integer division truncates; modulo gives the remainder.10 *  - Logical && and || short-circuit (right side may not evaluate).11 *  - Bitwise operators work on the binary representation (great for flags/masks).12 */13public class core4Operators {14    public static void main(String[] args) {15        int a = 17, b = 5;16 17        // Arithmetic18        System.out.println("a+b=" + (a + b) + " a-b=" + (a - b) + " a*b=" + (a * b));19        System.out.println("a/b=" + (a / b) + " (integer division truncates)");20        System.out.println("a%b=" + (a % b) + " (remainder)");21 22        // Relational23        System.out.println("a>b=" + (a > b) + " a==b=" + (a == b));24 25        // Logical with short-circuit demo26        System.out.println("short-circuit && : " + (b != 0 && a / b > 2));27 28        // Bitwise / shifts29        System.out.println("a & b = " + (a & b));   // AND30        System.out.println("a | b = " + (a | b));   // OR31        System.out.println("a ^ b = " + (a ^ b));   // XOR32        System.out.println("~a    = " + (~a));      // NOT33        System.out.println("a<<1  = " + (a << 1) + " (multiply by 2)");34        System.out.println("a>>1  = " + (a >> 1) + " (divide by 2)");35 36        // Increment / decrement (pre vs post)37        int n = 5;38        System.out.println("n++ returns " + (n++) + ", then n=" + n);39        System.out.println("++n returns " + (++n) + ", n=" + n);40 41        // Compound assignment42        int total = 10;43        total += 5; total *= 2;44        System.out.println("compound assignment total=" + total);45 46        // Ternary47        String parity = (a % 2 == 0) ? "even" : "odd";48        System.out.println("a is " + parity);49    }50}