Java default constructor
We can write return statements inside the class. Here you will see both ways to create objects of Animal Class by using the default and parameterize constructors.Īnimal dog_tommy=new Animal("Tommy","Small Dog",5,"Black") Ī constructor doesn’t have return type while implementation, but the constructor returns the current instance of the class. Parameterize Constructor : Constructor with parameter Default Constructor : Constructor without parameter This default constructor calls the parent’s class no-argument constructor i.e super() or if no parent class extended the called constructor of Object Class i.e directly or indirectly parent class of all the class.If you declare any parameterize constructor then that is must write a default constructor.If you do not explicitly declare any constructor, then on time of compile Java compiler will automatically provide a no-argument constructor i.e also called the default constructor. All java classes must have at least one constructor.Constructors declaration with access modifiers can be used to control its access i.e so that restricts other classes to call the constructor.Constructor can not be used with keywords final, abstract, synchronized and static.Constructor always has the same name as the class name in which it exists.Parametrize Constructor: A Constructor with a number of arguments.Default Constructor: A Constructor without any argument.The constructor also contains collections of statements to execute at time object creation. In Java, Constructors are used to creating and initializing the object’s state.
