What is Constructor? Discuss Different Types of Constructor in Java?

* What is constructor? Discuss different constructor in java?

Ans:- A constructor in Java is a block of code similar to a method that's called when an instance of an object is created. A constructor resembles an interface method in java but it's not a method as it does not have a return type.

There are 4 different types of the constructor are here-

• Default Constructor
• No-argument Constructor
• Private Constructor
• Perameterized Constructor

Default Constructor:

If you do not implement any constructor in your class, java compiler inserts a default constructor in your class. This constructor is known as default constructor.

class A

{

}

class B extends A

{

}

class Test

{

A obj = new B(); // Dynamic binding

}

import java.io.*;

class Test

{

public static void main(String args[])  // args use for command line argument

{

BufferedReader br = new BufferReader(new InputStreamReader());

br.readLine();

}

}