Jan 13, 2022 · What is a default constructor? A default constructor is a constructor created by the compiler if we do not define any constructor (s) for a class. Here is an example: myStudent.firstName = "Ihechikara"; . myStudent.lastName = "Abba"; .

Sep 11, 2022 · If you don't implement any constructor in your class, the Java compiler inserts default constructor into your code on your behalf. You will not see the default constructor in your source code(the .java file) as it is inserted during compilation and …

3. Java Default Constructor. If we do not create any constructor, the Java compiler automatically creates a no-arg constructor during the execution of the program. This constructor is called the default constructor. Example: Default Constructor

Apr 23, 2025 · Example: This program demonstrates how a constructor is automatically called when an object is created in Java. Note: It is not necessary to write a constructor for a class. It is because the Java compiler creates a default constructor (constructor with no arguments) if your class doesn’t have any.

Sep 6, 2023 · One that accepts no argument is also called the default constructor. Other constructors that accept arguments are called parameterized constructors. 3.1. Default Constructor. If we do not provide any constructor in the class, JVM provides a default constructor to the class during compile time.

Apr 29, 2020 · In this example, I demonstrated that Java compiler creates a default constructor when the class does not define any constructor. I also demonstrated how to use Java reflection library to initialize an object.

Aug 19, 2024 · In Java, a default constructor is an empty, no-argument constructor automatically inserted by the compiler into the code if no explicit constructor is defined in the class. For example, if we write: public class Student { private String name; }

There are two types of constructors, the default constructor and the parameterized constructor. On this document we will be interested on the default constructor which is the no-arg …

Feb 13, 2025 · In this eBook we focus on the default constructor concept—a special constructor injected by Java when no user-defined constructor exists—and show what happens when a parameterized constructor is explicitly defined. The primary goals of this discussion are: To explain when and how Java injects a default constructor.

Jan 6, 2024 · In this article, we will learn about default constructor in java, what it is, its syntax, definition with examples. A constructor in java is a special method which has the same name as its class. It is automatically called when we create an object of its class. A constructor may or may not have any arguments.