Contents
How can we override a method in interface?
You can make the methods default in the interface itself, Default methods are introduced in interfaces since Java8 and if you have default methods in an interface it is not mandatory to override them in the implementing class.
How can we restrict method overriding?
Different Ways to Prevent Method Overriding in Java
- Using a static method.
- Using private access modifier.
- Using default access modifier.
- Using the final keyword method.
Do you have to override all interface methods?
Yes, it is mandatory to implement all the methods in a class that implements an interface until and unless that class is declared as an abstract class. Implement every method defined by the interface.
Which method hides a method in the superclass?
Overriding and Hiding Methods
| Superclass Instance Method | Superclass Static Method | |
|---|---|---|
| Instance Method | Overrides (must also have the same return type) | Generates a compile-time error |
| Static Method | Generates a compile-time error | Hides |
Can we have method overloading in interface?
Yes, you can have overloaded methods (methods with the same name different parameters) in an interface. You can implement this interface and achieve method overloading through its methods.
Can we override default method in Interface?
If you have default method in an interface, it is not mandatory to override (provide body) it in the classes that are already implementing this interface. In short, you can access the default methods of an interface using the objects of the implementing classes.
How to override only few methods of interface in Java?
You can make the methods default in the interface itself, Default methods are introduced in interfaces since Java8 and if you have default methods in an interface it is not mandatory to override them in the implementing class.
How to override method declared in an interface-stack?
It’s impossible to override the method without modyfing the base class with a virtual, so you must use new instead of virtual as Tigran wrote. Anyway there is a way to have your classes executing the right method when they are assigned to variables declared as IMyInterface.
When to use @ override in Java 6?
In java 6 and later versions, you can use @Override for a method implementing an interface. But, I donot think it make sense: override means you hava a method in the super class, and you are implementing it in the sub class. If you are implementing an interface, I think we should use @Implement or something else, but not the @Override.
Can you override a default method in Java?
Unlike other abstract methods these are the methods can have a default implementation. If you have default method in an interface, it is not mandatory to override (provide body) it in the classes that are already implementing this interface. In short, you can access the default methods of an interface using the objects of the implementing classes.