No, a private method cannot be overridden since it is not visible from any other class. You have declared a new method for your subclass that has no relation to the superclass method. One way to look at it is to ask yourself whether it would be legal to write super. func() in the Derived class.

Besides, can we override private and protected methods?

Yes, the private method can be overriden in the subclass. But the methods in super class can't be overridden with weaker access privileges. This means if you override a public method to be a private or protected method in the subclass, it will give you the compile error.

Beside above, can you inherit private methods? Only protected and public methods/variables can be inherited and/or overridden. Subclasses can only invoke or override protected or public methods (or methods without access modifiers, if the superclass is in the same package) from their superclasses.

In respect to this, which method can be overridden?

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

Can private method static?

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private or public doesn't make a difference - static methods are OK, but if you find you're using them all the time (and of course instance methods that don't access any instance fields are basically static methods for this purpose), then you probably need to rethink the design.

Which method Cannot be overridden in Java?

A method declared final cannot be overridden. A method declared static cannot be overridden but can be re-declared. If a method cannot be inherited, then it cannot be overridden. A subclass within the same package as the instance's superclass can override any superclass method that is not declared private or final.

Can static private final methods be overridden?

Private, Static and Final Methods - Can't Overridden in Java
Similarly, static methods can not be overridden in Java, because they are resolved and bonded during compile time, while overriding takes place at runtime. They are resolved based upon the type and not object.

Why overridden methods Cannot be more restrictive?

An overridden method cannot have a more restrictive access modifier. An overridden method can throw any unchecked exception. Final methods cannot be overridden. Private methods are not inherited to subclass hence it cannot be overridden in a subclass.

What is overriding in OOP?

Method overriding, in object-oriented programming, is a language feature that allows a subclass or child class to provide a specific implementation of a method that is already provided by one of its superclasses or parent classes.

Why method overriding is used?

What is Method Overriding in Java? In object-oriented programming, the feature of overriding is used to provide a class, subclass or a child class to use a method that is already used by parent class to have a specific implementation. Method overriding is the method by which Java can support runtime polymorphism.

What is blank final variable?

A final variable declared but not initialized (or not given a value) is known as blank final variable. It can be given a value through a constructor only (but not through a method call). 2. What is static blank final variable? It is simply a blank final variable declared extra as static.

Can final method be overloaded?

private and final methods can be overloaded but they cannot be overridden. It means a class can have more than one private/final methods of same name but a child class cannot override the private/final methods of their base class.

Is it possible to override the main method?

Well, you can call it just like any other method. In short, main method can be overloaded but cannot be overridden in Java. That's all about overloading and overriding main method in Java. Now you know that its possible to overload main in Java but its not possible to override it, simply because its a static method.

What is the difference between overloading and overriding?

Overloading occurs when two or more methods in one class have the same method name but different parameters. Overriding allows a child class to provide a specific implementation of a method that is already provided its parent class.

Why we can not override static method?

Static methods cannot be overridden because method overriding only occurs in the context of dynamic (i.e. runtime) lookup of methods. Static methods (by their name) are looked up statically (i.e. at compile-time). Method overriding happens in the type of subtype polymorphism that exists in languages like Java and C++.

Can we reduce the visibility of the overridden method?

You cannot reduce the visibility of a inherited method. Here parent class has func() method which is public and overridden by the subclass TestClass which is private.

Can we override static method?

Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).

Can we override method with different return type?

Yes. It is possible for overridden methods to have different return type . But the limitations are that the overridden method must have a return type that is more specific type of the return type of the actual method.

What do you mean by overloading?

Overloading refers to the ability to use a single identifier to define multiple methods of a class that differ in their input and output parameters. Overloaded methods are generally used when they conceptually execute the same task but with a slightly different set of parameters.

Is @override necessary?

The @Override annotation informs the compiler that the element is meant to override an element declared in a superclass. It is not required, but it will generate a compile error if that method actually does not correctly override a method in a superclass.

Can constructor be overridden?

a constructor cannot be overridden. a constructor cannot be called with an object but method can be called. To call a constructor, an object must be created. in method overriding, the super class method and subclass method should be of the same – same name, same return type and same parameter list.

How do you access private method from another class?

You can access the private methods of a class using java reflection package.
  1. Step1 − Instantiate the Method class of the java. lang.
  2. Step2 − Set the method accessible by passing value true to the setAccessible() method.
  3. Step3 − Finally, invoke the method using the invoke() method.