How do you override a constructor?

How do you override a constructor?

How do you override a constructor?

Constructor looks like method but it is not. It does not have a return type and its name is same as the class name. But, a constructor cannot be overridden. If you try to write a super class's constructor in the sub class compiler treats it as a method and expects a return type and generates a compile time error.

Can I overwrite a constructor in Java?

1) NO! A constructor belongs to the class in which it is declared. A sub class is a different class and must have its own constructor. So, constructors simply can't be overridden.

Can a constructor be inherited?

Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.

Can we override private constructor in Java?

A private constructor does not allow a class to be subclassed. A private constructor does not allow to create an object outside the class.

Is constructor final?

No, a constructor can't be made final. A final method cannot be overridden by any subclasses. ... But, in inheritance sub class inherits the members of a super class except constructors. In other words, constructors cannot be inherited in Java therefore, there is no need to write final before constructors.

Can we override private method?

No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.

Can a constructor be overridden in Java?

Can a constructor be overridden in java? If super class and sub class have same methods including name, return type and parameters, and if you try to call it using the object of the sub class Then the method in the sub class is invoked. Constructor looks like method but it is not.

What does it mean to override parent constructor?

A by default call to the parent class constructor i.e. super(); which makes call to the parent class constructor. Overriding means to redefine the functionality of the method (defined in the parent/base class) by making the method of same name but with different behavior in the derived/child class.

Can you use a constructor out of a class?

No we can't use a constructor out of class because sub class is treat constructor as a method.. without return type. You can use it as a private but if a constructor of a class is private then you cannot make the obj of the respected class into another class. 1) NO! A constructor belongs to the class in which it is declared.

Is there such a thing as overriding in Java?

There is no such thing in Java. There is constructor overloading, i.e. providing different argument sets. Constructor looks like a method but name should be as class name and no return value. Overriding means what we have declared in Super class, that exactly we have to declare in Sub class it is called Overriding.


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