What Is the Maximum Number of Instances That Can Be Created for an Abstract Class? A correct answer is an option (D) 0. An abstract class is a restricted class that cannot be used to create objects. To learn more general knowledge related questions, visit BYJU’S – The Learning App.
How many instances of a class can be created?
5 Answers. Show activity on this post. Therefore, only two instances of class A are created.
Can instances of abstract classes be created?
No, you cannot create an instance of an abstract class because it does not have a complete implementation. The purpose of an abstract class is to function as a base for subclasses. It acts like a template, or an empty or partially empty structure, you should extend it and build on it before you can use it.
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How many instances of an abstract class can be created one as many as required as many as initialised?
Answer: No you can’t, instead you can create instance of all other classes extending that abstract class. Because it’s abstract and an object is concrete. An abstract class is sort of like a template, or an empty/partially empty structure, you have to extend it and build on it before you can use it.
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How many abstract methods should an abstract class have?
A class which contains 0 or more abstract methods is known as abstract class. If it contains at least one abstract method, it must be declared abstract.
For which class no instance can be created?
No instances can be created from an abstract class. To use the instance components of an abstract class, a concrete subclass of the class must be instantiated. Subclass cls2 inherits from an abstract superclass cls1.
How many objects of a single class can be created?
13) How many maximum numbers of objects can be created from a single Class in Java? Explanation: There is no limit on the number of objects being created from a class.
How many objects can be created in a class C?
How many objects can present in a single class? Explanation: Because a class may contain any number of objects according to its compliance. 8.
Which of the following class allows only one object of it to be created?
Explanation: Singleton class allows the programmer to declare only one object of it, If one tries to declare more than one object the program results into error.
What is the maximum number of characters that can be held in the string variable char address line 40 ]?
The correct answer is option (c) 39.
Can you create an instance of an abstract class explain with a suitable example?
As discussed above, we cannot instantiate an abstract class. This program throws a compilation error. Note: The class that extends the abstract class, have to implement all the abstract methods of it, else you have to declare that class abstract as well.
Which is used to create an abstract class?
abstract keyword is used to create a abstract class and method. Abstract class in java can’t be instantiated. An abstract class is mostly used to provide a base for subclasses to extend and implement the abstract methods and override or use the implemented methods in abstract class.
Can we create object for abstract class if not?
Because an abstract class is an incomplete class (incomplete in the sense it contains abstract methods without body and output) we cannot create an instance or object; the same way you say for an interface.
Which of the following type of data member can be shared by all instances of its class?
Static data members can be shared by all of its classes.
