How do I use default constructors in Java?

How do I use default constructors in Java?

In Java, a default constructor is a constructor that does not take any parameters. It is automatically provided by the compiler if no constructors are defined.

Can you show me an example of a default constructor?

Sure! Here's a simple example:

class Dog {
    String name;

    // Default constructor
    Dog() {
        name = "Unknown";
    }
}

In this example, the Dog class has a default constructor that initializes the name to "Unknown".

What if I define my own constructor?

If you define your own constructor, the compiler will not provide a default constructor. You need to explicitly define one if you want it.

Can I have multiple constructors in a class?

Yes, you can have multiple constructors in a class, which is known as constructor overloading. Each constructor must have a different parameter list.