Interested to Buy Any Domain ? << Click Here >> for more details...
Can a class extend abstract class or interface? why
- 4 Answers
- 9677 Views
- Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / swapna
Yes, a class can extends an abstract class.A class can
implement an interface not to extend an interface.
In abstract class can consist method signature not method's
defenation. Through class we can define the methods
defenation by using public access specifier. In class we
can override the methods of abstract class by using public
access specifiers. Same think will happen in also interface
case . B'coz we cannot directly create object of abstract
class and interface.
Ex:
abstract class A
{
abstract void show();
}
class B extends A
{
public void show()
{
System.out.println ("Hello java");
}
}
public class AbstA {
public static void main (String[] args)
{
B b=new B();
b.show();
}
}
out put: Hello java
| Is This Answer Correct ? | 17 Yes | 1 No |
Answer / abhay bhatia
a class can extend an abstract class and can implement an
interface, why is because even though an abstract class
provide default implementation of its methods, we cannot
instantiate an object of the abstract class and therefore
need a class that extends it to use the instance methods of
this abstract class. An interface on the other hand cannot
even have default implementation, therefore it has to be
implemented to be used
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / mahesh
A class can extend an Abstract class but it can't extend an
interface.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ramakrishna
Yes, A class can extend an abstract class also any
interface,why because,A normal class which is implementing
an interface can still be declared as any abstract,if u
extend that class what happens?
u r extending an abstract class and indirectly extending
interface also.
| Is This Answer Correct ? | 1 Yes | 3 No |
what is the difference between HashMap And HashTable?
Does importing a package imports its sub-packages as well in java?
When will we prefer to use set and list in java and why?
When is the garbage collection used in Java?
diff. b/w JAVA and javascript...
What is final access modifier in java?
What is the life cycle of Thread ?
12 Answers HCL, Varnar Softech,
What is field name?
How do you declare an empty string?
How the elements are organized in CardLayout?
Difference between Applet & Application?
what really hapens when a object is created using new operator? 1.is it allocates memory to all variables and methods in the class with reference to that object?
Core Java 
