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Method overloading contd

Method overloading contd. class OverloadDemo { public static void main(String args[]) { Overload ob = new Overload(); int resI; double resD; // call all versions of ovlDemo() ob.ovlDemo(); System.out.println(); ob.ovlDemo(2);

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Method overloading contd

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  1. Method overloading contd class OverloadDemo { public static void main(String args[]) { Overload ob = new Overload(); int resI; double resD; // call all versions of ovlDemo() ob.ovlDemo(); System.out.println(); ob.ovlDemo(2); System.out.println(); resI = ob.ovlDemo(4, 6); System.out.println("Result of ob.ovlDemo(4, 6): " + resI); System.out.println(); resD = ob.ovlDemo(1.1, 2.32); System.out.println("Result of ob.ovlDemo(1.1, 2.2): " + resD); } }

  2. Overload constructor // Demonstrate an overloaded constructor. class MyClass { int x; MyClass() { System.out.println("Inside MyClass()."); x = 0; } MyClass(int i) { System.out.println("Inside MyClass(int)."); x = i; } MyClass(double d) { System.out.println("Inside MyClass(double)."); x = (int) d; } MyClass(int i, int j) { System.out.println("Inside MyClass(int, int)."); x = i * j; } }

  3. Overload constructor contd. class OverloadConsDemo { public static void main(String args[]) { MyClass t1 = new MyClass(); MyClass t2 = new MyClass(88); MyClass t3 = new MyClass(17.23); MyClass t4 = new MyClass(2, 4); System.out.println("t1.x: " + t1.x); System.out.println("t2.x: " + t2.x); System.out.println("t3.x: " + t3.x); System.out.println("t4.x: " + t4.x); } }

  4. example // Initialize one object with another. class Summation { int sum; // Construct from an int. Summation(int num) { sum = 0; for(int i=1; i <= num; i++) sum += i; } // Construct from another object. Summation(Summation ob) { sum = ob.sum; } } class SumDemo { public static void main(String args[]) { Summation s1 = new Summation(5); Summation s2 = new Summation(s1); System.out.println("s1.sum: " + s1.sum); System.out.println("s2.sum: " + s2.sum); } }

  5. Bubble sort class bubblesort { public static void main(String args[]) { int nums[] = { 99, -10, 100123, 18, -978, 5623, 463, -9, 287, 49 }; int a, b, t; int size; size = 10; // number of elements to sort // display original array System.out.print("Original array is:"); for(int i=0; i < size; i++) System.out.print(" " + nums[i]); System.out.println();

  6. // This is the bubble sort. for(a=1; a < size; a++) for(b=size-1; b >= a; b--) { if(nums[b-1] > nums[b]) { // if out of order // exchange elements t = nums[b-1]; nums[b-1] = nums[b]; nums[b] = t; } } // display sorted array System.out.print("Sorted array is:"); for(int i=0; i < size; i++) System.out.print(" " + nums[i]); System.out.println(); } }

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