Constructors, Default Values & Object Initialization in Java

Trainer: Mr.Nantha Day-7 Overview Today’s session focused on three important topics in Java: default values, constructors, and object initialization. Constructors Constructors are special methods used to create and initialize objects in Java. They allow developers to set up an object’s initial state when it is instantiated. Important Rules (1) Constructor name must be same as class name. (2) It does not have a return type (not even void). (3) It runs automatically when object is created. Example class Student { String name; // Constructor Student(String n) { name = n; } public static void main(String[] args) { Student s1 = new Student("Arjun"); System.out.println(s1.name); } } Output: Arjun What Happens Here? Student s1 = new Student("Arjun"); ✔ Memory is created in Heap ✔ Constructor runs automatically ✔ Variable name gets initialized Default Values in Java When we create an object, Java automatically assigns default values to instance variables if we do not initialize them. Default V