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Can subclass override methods?

Can subclass override methods?

The ability of a subclass to override a method allows a class to inherit from a superclass whose behavior is “close enough” and then to modify behavior as needed. The overriding method has the same name, number and type of parameters, and return type as the method that it overrides.

How do you override a method in Java?

Invoking overridden method from sub-class : We can call parent class method in overriding method using super keyword. Overriding and constructor : We can not override constructor as parent and child class can never have constructor with same name(Constructor name must always be same as Class name).

What is an overridden method?

Overriding is done so that a child class can give its own implementation to a method which is already provided by the parent class. In this case the method in parent class is called overridden method and the method in child class is called overriding method.

How do I access overridden method?

Rules for method overriding:

  1. In java, a method can only be written in Subclass, not in same class.
  2. The argument list should be exactly the same as that of the overridden method.
  3. The return type should be the same or a subtype of the return type declared in the original overridden method in the super class.

When to override super class methods in Java?

Overriding Super Class Methods in Java | Inheritance in Java 9.3 Overriding Superclass Methods In a class hierarchy, when a method in a subclass has the same name and type signature as a method in its superclass, then the method in the subclass is said to override the method in the superclass.

Can We override a method by passing subclass of?

In java, Can we override a method by passing subclass of the parameter used in super class method? As per the rule, while overriding a method in subclass, parameters cannot be changed and have to be the same as in the super class. What if we pass subclass of parameter while overriding method ? Will it be called as overloading or overriding?

What is the problem with overriding methods in Java?

The problem is what is the type of arguments the code using your method is allowed to feed to your method. An overriding method must fulfill the contract of the overridden method. If the overridden method accepts arguments of some class and you override it with a method that accepts only a subclass, it doesn’t fulfill the contract.

When to use overriding and access modifiers in Java?

Overriding and Access-Modifiers : The access modifier for an overriding method can allow more, but not less, access than the overridden method. For example, a protected instance method in the super-class can be made public, but not private, in the subclass. Doing so, will generate compile-time error.