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What is the difference between the override and new keywords in Java?
The override keyword is used to extend or modify a virtual/abstract method, property, indexer, or event of base class into derived class. The new keyword is used to hide a method, property, indexer, or event of base class into derived class.
What is the difference between new and override?
override: overrides the functionality of a virtual method in a base class, providing different functionality. new: hides the original method (which doesn’t have to be virtual), providing different functionality.
Why do we use method overriding in Java?
The purpose of Method Overriding is that if the derived class wants to give its own implementation it can give by overriding the method of the parent class. When we call this overridden method, it will execute the method of the child class, not the parent class.
Does override imply virtual?
‘override’ is a special identifier that shows the reader of the code that a virtual function is being overridden, while also being a hint for the compiler to verify that it actually is. The base class has already stated that the function is virtual, so there is no need to do that again.
When to use virtual, override, and new keyword?
Polymorphism is one one of the main aspect of OOPS Principles which include method overriding and method overloading. Virtual and Override keyword are used for method overriding and new keyword is used for method hiding.
When to use an override keyword in a method?
If a base class declares a method as abstract, the method need to be defined in the derived class using override keyword. Adding new keyword to a method tells that you are aware that the method hides the base class method.
When to use the virtual keyword in Java?
The virtual keyword is used to modify a method, property, indexer, or event declared in the base class and allow it to be overridden in the derived class.
How does virtual and override work in Java?
Virtual and override work together to get the desired result and you cannot override a class which is not marked as virtual. Declaring the base class as virtual and not decorating the derived class with override keyword means you are not overriding the method.