Can we create an object of final class?

Note that by making final class, you are just stopping the class to be inherited. Otherwise, final class is as normal class in java. Means, we can create objects of the class and call methods in java program etc.

Can we create object final String class?

In Java, we know that String objects are immutable means we can't change anything to the existing String objects. final means that you can't change the object's reference to point to another reference or another object, but you can still mutate its state (using setter methods e.g).

Can we create a object of class in the class?

We can use it to create the Object of a Class. Class. forName actually loads the Class in Java but doesn't create any Object. To create an Object of the Class you have to use the new Instance Method of the Class.

Is object class A final?

You can declare some or all of a class's methods final. You use the final keyword in a method declaration to indicate that the method cannot be overridden by subclasses. The Object class does this—a number of its methods are final .

Can we create a final class in Java?

A class can be made final by using the final keyword. The final class cannot be inherited and so the final keyword is commonly used with a class to prevent inheritance.

final keyword in java | final variable, final method and final class in java

Can we create object of abstract class?

We cannot create objects of an abstract class. To implement features of an abstract class, we inherit subclasses from it and create objects of the subclass. A subclass must override all abstract methods of an abstract class.

Can we inherit final class in Java?

The final modifier for finalizing the implementations of classes, methods, and variables. The main purpose of using a class being declared as final is to prevent the class from being subclassed. If a class is marked as final then no class can inherit any feature from the final class. You cannot extend a final class.

Can a final class extend other classes?

A final class can extend other classes; It can be a subclass but not a superclass. Simply, when we need to create an immutable class, then the final class is the best answer. The final class is in itself a declaration that says that it's final, i.e. this class has no subclass & can not be extended furthermore.

How do you declare an object final?

If we use the final keyword with an object, it means that the reference cannot be changed, but its state (instance variables) can be changed. Making an object reference variable final is a little different from a final variable. In that case object fields can be changed but the reference can't be changed.

Can we create object of interface in Java?

Like abstract classes, interfaces cannot be used to create objects (in the example above, it is not possible to create an "Animal" object in the MyMainClass) Interface methods do not have a body - the body is provided by the "implement" class. On implementation of an interface, you must override all of its methods.

Can you call a class inside itself?

Yes, you can, but it's relatively less common for you to want to. In a method like showLine() , which is an instance method, your code is already executing in the context of a Second_Example instance.

Can we have virtual constructor in the class?

In C++, the constructor cannot be virtual, because when a constructor of a class is executed there is no virtual table in the memory, means no virtual pointer defined yet. So, the constructor should always be non-virtual. But virtual destructor is possible.

Can a class contain itself?

In particular, every element of a class is a set, so a proper class cannot be an element of any class (including itself). However, it is perfectly reasonable to allow sets that are elements of themselves.

Can a final class be overridden?

There are three distinct meanings for the final keyword in Java. A final class cannot be extended. A final method cannot be overridden. A final variable cannot be assigned to after it has been initialized.

Can we declare Hashmap as final?

You can't make that reference point to a different hash table. But you can do anything to that object, including adding and removing things. Your example of an int is a primitive type, not a reference. Final means you cannot change the value of the variable.

Can we make ArrayList as final?

If We declare ArrayList as final we can still add elements to it but we can't reassign it.

How do you declare a final object in Java?

We can declare Java methods as Final Method by adding the Final keyword before the method name. The Method with Final Keyword cannot be overridden in the subclasses. The purpose of the Final Method is to declare methods of how's definition can not be changed by a child or subclass that extends it.

What is true final class?

What is true of final class? Explanation: Final class cannot be inherited. This helps when we do not want classes to provide extension to these classes. 8.

What happens if I declare employee class as final class?

The final modifier for finalizing the implementations of classes, methods, and variables. The main purpose of using a class being declared as final is to prevent the class from being subclassed. If a class is marked as final then no class can inherit any feature from the final class. You cannot extend a final class.

Can constructor be made final?

No, a constructor can't be made final. A final method cannot be overridden by any subclasses. As mentioned previously, the final modifier prevents a method from being modified in a subclass. The main intention of making a method final would be that the content of the method should not be changed by any outsider.

Can we inherit static class in Java?

Static methods do not use any instance variables of any object of the class they are defined in. Static methods take all the data from parameters and compute something from those parameters, with no reference to variables. We can inherit static methods in Java.

Can abstract class have constructor?

Like any other classes in Java, abstract classes can have constructors even when they are only called from their concrete subclasses.

Can private class be inherited?

Members of a class that are declared private are not inherited by subclasses of that class. Only members of a class that are declared protected or public are inherited by subclasses declared in a package other than the one in which the class is declared. The answer is No. They do not.

Can a main () method be declared final?

Yes, we can declare the main () method as final in Java. The compiler does not throw any error. If we declare any method as final by placing the final keyword then that method becomes the final method.

Can abstract class be inherited?

An abstract class cannot be inherited by structures. It can contains constructors or destructors. It can implement functions with non-Abstract methods.