Question: Can We Override Public Method?

Is it possible to override protected method to public?

Yes, the protected method of a superclass can be overridden by a subclass.

If the superclass method is protected, the subclass overridden method can have protected or public (but not default or private) which means the subclass overridden method can not have a weaker access specifier..

Can we override start method?

Can we override a start() method in Java? Yes, we can override the start() method of a Thread class in Java. We must call the super. … If we call the run() method directly from within our start() method, it can be executed in the actual thread as a normal method, not in a new thread.

Can we inherit private method in Java?

You can only call a private member method in its definition class. … say() because derived classes can’t inherit private methods from its base class. Only protected and public methods/variables can be inherited and/or overridden.

Why method overriding is used?

The benefit of overriding is: ability to define a behavior that’s specific to the subclass type, which means a subclass can implement a parent class method based on its requirement. In object-oriented terms, overriding means to override the functionality of an existing method.

Can we override the main method in Java?

No, we cannot override main method of java because a static method cannot be overridden. The static method in java is associated with class whereas the non-static method is associated with an object. … Therefore, it is not possible to override the main method in java.

Can final method be overridden?

You use the final keyword in a method declaration to indicate that the method cannot be overridden by subclasses.

Can we prevent overriding a method without using the final modifier?

In short, its not possible to override private and static method in Java. That’s all about 3 ways to prevent a method from being overridden in Java. Remember, though syntactically you can use private, static and final modifier to prevent method overriding, but you should always use final modifier to prevent overriding.

What is method overriding give an example?

Method Overriding Example The Boy class extends Human class. Both the classes have a common method void eat() . Boy class is giving its own implementation to the eat() method or in other words it is overriding the eat() method.

Can we override method in same class?

No , You can override a method in subclass only. In your case you are overriding Object’s toString() method not Test class method. In one class we can not have method with same signature. this is because there is no need to have override method in same class.

Can we override static method?

Can we Override static methods in java? We can declare static methods with the same signature in the subclass, but it is not considered overriding as there won’t be any run-time polymorphism. Hence the answer is ‘No’.

Can we override private and final methods?

No, We can not override private method in Java, just like we can not override static method in Java. … private methods are not even visible to Child class, they are only visible and accessible in the class on which they are declared. private keyword provides highest level of Encapsulation in Java.

Why we Cannot 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 overload the main method?

Yes, we can overload the main method in Java, but When we execute the class JVM starts execution with public static void main(String[] args) method.

Why is main method static?

Why the main () method in Java is always static? Java main() method is always static, so that compiler can call it without the creation of an object or before the creation of an object of the class. In any Java program, the main() method is the starting point from where compiler starts program execution.

Which method must be override?

Rule #1:Only inherited methods can be overridden. That also means private methods cannot be overridden. Let’s see some examples: The Dog class overrides both the move() (public) and eat() (protected) methods from the Animal class (regardless of packages where the both classes are declared):

Can we inherit private methods?

As the private methods are not inherited, a superclass reference calls its own private method. Private methods are only for the owner. Not even for the kids, relatives or friends of the owner. It works because you are casting to a Superclass from within a method of the Superclass .

What are the restrictions when overriding a method?

Method Overriding RulesIt must have the same method name.It must have the same arguments.It must have the same return type. … It must not have a more restrictive access modifier (if parent –> protected then child –> private is not allowed).It must not throw new or broader checked exceptions.

How do you override a method?

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.More items…•

What happens if we don’t override Run method?

It is highly recommended to override run() method because it improves the performance of the system. If we don’t override Thread class run() method in our defined thread then Thread class run() method will be executed and we will not get any output because Thread class run() is with an empty implementation.

What happens if you don’t override the thread class run () method?

When we call start() method on thread, it internally calls run() method with newly created thread. So, if we don’t override run() method newly created thread won’t be called and nothing will happen. main has started. main has ended.

What is the difference between method overloading and method overriding?

1. What is Overloading and Overriding? When two or more methods in the same class have the same name but different parameters, it’s called Overloading. When the method signature (name and parameters) are the same in the superclass and the child class, it’s called Overriding.