Java Constructor

Syntax

[access modifier] ClassName([parameters]){
    //Initialization Code
}

Example

public class Car {
    String make;
    String model;

    public Car(String make, String model) {
        this.make = make;
        this.model = model;
    }
}

Output

A constructor creates an object of a class and initializes its properties with the values provided as arguments.

Explanation

In Java, a constructor is a special method of a class that is used to initialize objects of that class. It has the same name as the class and has no return type. A constructor typically initializes the properties of an object with the values passed as arguments.

In the example above, we have a Car class with two properties: make and model. We have defined a constructor that takes two arguments: make and model. Inside the constructor, we set the values of the car's make and model properties using the arguments passed to the constructor.

Use

Constructors are used to initialize objects of a class. They are called automatically when an object is created using the "new" keyword. Constructors can be used to set default values for object properties or to accept arguments and initialize object properties with those values.

Important Points

• A constructor is a special method of a class that is used to initialize object properties.
• A constructor has no return type and has the same name as the class.
• Constructors can be used to set default values for object properties or to accept arguments and initialize object properties with those values.
• Constructors are called automatically when an object is created using the "new" keyword.

Summary

Constructors are essential components of Java classes, used to create and initialize objects. They accept arguments, which can be used to set default values or to initialize object properties. Constructors have the same name as the class, and they are called automatically when an object is created using the "new" operator.