Constructors in Java A constructor in Java is a special method that is used to initialize objects. It is called when an instance of a class is created. The constructor has the same name as the class and does not have a return type. Here are the types of constructors in Java:
Default Constructor: A constructor is called “Default Constructor” when it doesn’t have any parameter. For example:
public class Bicycle {
public Bicycle() {
// This is a default constructor
}
}
Parameterized Constructor: A constructor that initializes the instance variables with the provided values is known as a parameterized constructor. For example:
constructor with parameter
public class Bicycle {
private int gear;
public Bicycle(int gear) {
this.gear = gear; // This is a parameterized constructor
}
}
In the above example, gear is a parameter. The this keyword is used to distinguish between class attributes and parameters with the same name.
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