Interested to Buy Any Domain ? << Click Here >> for more details...
Can you have a constructor in abstract class?
- 18 Answers
- 53857 Views
- HCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / saurabh
public class xyz : abc
{
int r = 10;
public xyz()
{
r = 35;
}
}
public abstract class abc
{
public int i = 0;
public abc()
{
i = 10;
}
}
sure , we can create constructor in abstract class.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sadiq
Yes. Abstract class can have constructor.
But abstract class cannot be instantiated,how we can call
constructor? Using super()(calls super class constructor) in
the subclass which extends abstract class.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / suresh
any class which extends with an object class should have a
constructor whether a class is abstract class or not.
if a abstract class is super class to some sub classes,
then the abstract class should extneds with oject class.
EX: abstract class A{
A{
super(); /// it ll give a call to super class
/// super() we can use only in
constructor
}
}
class B extends A{
}
means any class should extnd with super class.
because of this abstract classes are not 100% abstract.
interface is 100% abstract.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / swapnil bhosale
ya ,we can define and call costructor in abstract class but just by using super keyword in base class ,but keep in mind we cannot create instance ob abstract class,this just another way to call contructor in abstract class,go run and see o/p
import java.io.*;
abstract class A
{
A()
{
System.out.println("hi am conS in absT");
}
}
class AA extends A
{
AA()
{
super();//calling abstract constructor
System.out.println("hi i am conS in sub class ");
}
}
class AbstConst2
{
public static void main(String arg[])
{
AA ob=new AA();//creating instance of base class consT
}
}
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / vivek
Yes you can have only non parameterized constructor in
abstract class, Because for parameterized constructor we
will have to make instance of abstract class which is not
possible.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / neelamadhab mallick
A Abstract class never can be instanciate. if a concrete
method present inside the abstract class with the return
type of the same class, then it is possible to create the
object, but constructor will not called.
| Is This Answer Correct ? | 11 Yes | 22 No |
Answer / ashokmail.java@gmail.com
No. you can't make instance of abstract class.
| Is This Answer Correct ? | 42 Yes | 62 No |
Answer / naveen
a abstract class can contain abstract methods and concrete methods, to initiate and use these method we can create the object and also a constructor
| Is This Answer Correct ? | 7 Yes | 27 No |
how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion
How many arguments can a method have java?
How to perform selection sort in java?
How is tree Mirroring implemented?
diff b/w sleep(1000) and wait(1000)?
How many ways can we create singleton class?
Can we use both this () and super () in a constructor?
What is the use of protected in java?
Is char * a string?
What is an object class?
How to perform Singleton of the java class object on multi JVM?
What is jdbc api?
Core Java 
