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Constructor In Java   Constructor is a block of code similar to object. Constructor is created when creating Instance of Class. There are two type of Constructor:: 1. Default Constructor 2. Parameterized Constructor Program Example class B {     int age;     String name; B(int a, String b){ // create a constructor.........     age=a;     name=b; } void display(){     System.out.println("The age of " + name + " is " + age); }      } public class MyClass {     public static void main(String args[]) {         B obj = new B(15,"Karan");         B obj1 = new B(21,"Arjun");                  obj.display();         obj1.display();           } }