Can interface be overridden?

Can interface be overridden?

Similar to Default Method in Interface, the static method in an interface can be defined in the interface, but cannot be overridden in Implementation Classes.

Does interface need override?

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.

Can we override interface methods 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.

Can interface inherit another interface?

Interfaces can inherit from one or more interfaces. The derived interface inherits the members from its base interfaces. A class that implements a derived interface must implement all members in the derived interface, including all members of the derived interface's base interfaces.

What is difference between abstract class and interface?

Abstract class and interface both can't be instantiated. But there are many differences between abstract class and interface that are given below....Difference between abstract class and interface.

Abstract class	Interface
3) Abstract class can have final, non-final, static and non-static variables.	Interface has only static and final variables.

How do you implement only one interface?

The answer is simple: don't implement the interface. If you do implement it, either your class must be abstract, or you must implement all the methods defined in the interface (unless you are already inheriting an implementation).

Can we define methods in interface?

The interface body can contain abstract methods, default methods, and static methods. An abstract method within an interface is followed by a semicolon, but no braces (an abstract method does not contain an implementation).

Can class inherit interface?

Classes cannot inherit from an interface, since an interface is by definition empty: it only dictates the mandatory implementation of certain members. From the MSDN about interfaces: "An interface contains definitions for a group of related functionalities that a class or a struct can implement."

What is the purpose of the interface?

The purpose of interfaces is to allow the computer to enforce these properties and to know that an object of TYPE T (whatever the interface is ) must have functions called X,Y,Z, etc.

When to use @ override on an interface method?

The method does override or implement a method declared in a supertype. The method has a signature that is override-equivalent to that of any public method declared in {@linkplain Object}. So, at least in java8, you should use @Override on an implementation of an interface method. For the interface, using @Override caused compile error.

When do we override a method in Java?

When we override a method, that means we define it in a more specific manner as compared to its super class. Also, interfaces in java aren't supposed to contain any method definitions. Neither can interfaces inherit from a class. How are these two methods present in the List interface in the first place? These don't make sense together. I like...

When to use @ override in JDK 5?

You should always annotate methods with @Override if it's available. In JDK 5 this means overriding methods of superclasses, in JDK 6, and 7 it means overriding methods of superclasses, and implementing methods of interfaces.

Can a interface extend another interface in C #?

You are not overriding methods, you are implementing members of an interface. In C#, override is only used when you are overriding an existing implementation. A case of this is ToString(). The method you are overriding must be marked virtual on the base class.