Is it possible to instantiate the abstract class?

Asked by Last Modified  

31 Answers

Learn Java

Follow 2
Answer

Please enter your answer

Surendran Velath

Java, Angular Trainer with 25 years of IT experience

Use anonymous class. Example: For an abstract class AbstrClass. AbstrClass ac = new AbstrClass() { public void m1() { // code of abstract method m1. } } ;
Comments
Dislike Bookmark

IT Professional Trainer with 13 years of experience in IT industry + Academics

You cannot directly create the object of an abstract class... But you can create object reference of the abstract class
Comments
Dislike Bookmark

Experienced Java Professional

Abstract classes cannot be instantiated - this is by definition and design. From the JLS, Chapter 8. Classes: A named class may be declared abstract (§8.1.1.1) and must be declared abstract if it is incompletely implemented; such a class cannot be instantiated, but can be extended by subclasses.
Comments
Dislike Bookmark

Senior Software Engineer

No, you are not creating the instance of your abstract class here. Rather you are creating an instance of an anonymous subclass of your abstract class. And then you are invoking the method on your abstract class reference pointing to subclass object.
Comments
Dislike Bookmark

Java Trainer

No, it cannot be instantiated as concrete class but subclass can be instantiated else can have implementation of abstract class as inner class where implementation will get instanciated
Comments
Dislike Bookmark

11+ year of IT Experience in Manual & Automation(Java + Selenium+Rest Assured) Testing

An abstract class is a class which have either an abstract method and a non-abstract method. When the method is abstract, then the class should be abstract. The abstract class have a constructor. An abstract class is an incomplete class. Hence we should extend to another class and provide body to unimplemented...
read more
An abstract class is a class which have either an abstract method and a non-abstract method. When the method is abstract, then the class should be abstract. The abstract class have a constructor. An abstract class is an incomplete class. Hence we should extend to another class and provide body to unimplemented methods. read less
Comments
Dislike Bookmark

Expert in Java J2EE Training

No. 'Abstract' means incomplete. Abstract class is also an incomplete class. Only concrete classes can be instantiated.
Comments
Dislike Bookmark

Expert SDET

No. You cann't instantiate the abstract class
Comments
Dislike Bookmark

Trainer

No
Comments
Dislike Bookmark

10 years of Hadoop Spark Expertise

We cant instantiate the abstract class. but one we can create the object for the abstract class. using giving dummy implementations for unimplemented methods.
Comments
Dislike Bookmark

View 29 more Answers

Related Questions

best source to learn java from?
Main source if information on Java is oracle documentation. But it takes your time to read through, a lot more than you expect. Better prefer a trainer who can give what you need.
Himanshu
Sir tell me some tips to code in java?
If you know C / C++ already, just try how will you able to achieve same examples in java. I prefer try to understand the fundamental of java and create small programs, then make the connectivity among them. Slowly build an application.
Nitinkumar
What is use of interface in Java language?
Interface are used to code re-usability, and they are the real driver of ploymorphism in Java. Interface are also allows multiple inheritance in java.
Parminder
why string class is override in euals()/ hashCode Hethods?
• In the above program we compared two string using equals() method and it returns true.and comparing using == operator returns false. • Basically equal() will also return false on comparing those two...
Rami Reddy
What are the requirements of learning Java? How long it takes to learn java and what is the fee structure?
Core java is main to learn, if you join my classes it takes one month to become master.
Ruuchi

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

2.1. Reverse a singly linked list.
class Node { int data; Node next; Node(int data) { this.data = data; this.next = null; }} public class LinkedList { Node head; public void reverse() { Node prev = null; Node curr = head; Node next =...

Vivek J.

0 0
0
Definition of Class and Object in Java
Object - Objects have states and behaviors. Example: A dog has states - colour, name, breed as well as behaviors - barking, eating, sleeping. An object is an instance of a class. Class - A class can be...

Chanukya Vempati

0 0
0
JAVA - Object Cloning
JAVA - Object Cloning Is the way of creating the same copy of object without calling the class constructor. It means we can make any class object multiple times without calling its default constructor....

Gaurav Kothari

1 0
0
Implementation: What Is JPA And JPA?
The basic Java framework to access the database is JDBC. Unfortunately, with JDBC, a lot of hand work is needed to convert a database query result into Java classes. JPA allows us to work with Java classes...

Jayant Kumar

0 0
0
Tips for Entry Level Java Job Seeker
3 steps you should take to make a break as a Java developer: Step 1: Invest in improving your job hunting skills encompassing interviewing, networking, and resume writing skills. Step 2: Keep applying...
A

Akshay Shende

1 0
0

Recommended Articles

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Top 5 Reasons to Learn JavaScript

Before we start on the importance of learning JavaScript, let’s start with a short introduction on the topic. JavaScript is the most popular programming language in the world, precisely it is the language - for Computers, the Web, Servers, Smart Phone, Laptops, Mobiles, Tablets and more. And if you are a beginner or planning...

Read full article >

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Why Should You Learn Java !

Java is the most famous programming language till date. 20 years is a big time for any programming language to survive and gain strength. Java has been proved to be one of the most reliable programming languages for networked computers. source:techcentral.com Java was developed to pertain over the Internet. Over...

Read full article >

Find Oracle Java Certification near you
Oracle Java Certification in Bangalore
Oracle Java Certification in Hyderabad
Oracle Java Certification in Pune
Oracle Java Certification in Chennai
Oracle Java Certification in Delhi
Oracle Java Certification in Mumbai
Oracle Java Certification in Kolkata
Oracle Java Certification in Noida
Oracle Java Certification in Gurgaon
Oracle Java Certification in Ghaziabad
Online Java Training

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you