A abstract class extending an abstract class.Super class
has both abstract and non-abstract methods.How can we
implement abstract and non-abstract mehtods? Explain with
snippet
Answers were Sorted based on User's Feedback
Answer / tulasi prasad
abstract class AbstractParent
{
void parentMethod1()
{
System.out.println("def of non abstract
method from parent");
}
abstract void parentMethod2();
}
abstract class AbstractChild extends
AbstractParent
{
void childMethod1()
{
System.out.println("def of non abstract
method from abstract child");
}
void parentMethod2()
{
System.out.println("def of parent abstract
method from abstract child");
}
abstract void childMethod2();
}
class ConcreteChild extends AbstractChild
{
void childMethod2()
{
System.out.println("def of child abstract
method from concrete child");
}
}
public class Test
{
public static void main(String args[])
{
ConcreteChild obj = new ConcreteChild();
obj.parentMethod1();
obj.parentMethod2();
obj.childMethod1();
obj.childMethod2();
}
}
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / puneet khanna
If you have 2 abstract classes say Abstract Class A and
Abstract Class b where B extends A;
B may not implement the abstract methods from A but the
class which will inherit B will have to give the
implementation of the abstract methods from class A and B both.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / srinu
abstract class AbstractParent
{
void parentMethod1()
{
System.out.println("def of non abstract method from parent");
}
abstract void parentMethod2();
}
abstract class AbstractChild extends AbstractParent
{
void childMethod1()
{
System.out.println("def of non abstract method from
abstract child");
}
void parentMethod2()
{
System.out.println("def of parent abstract method from
abstract child");
}
abstract void childMethod2();
}
class ConcreteChild extends AbstractChild
{
void childMethod2()
{
System.out.println("def of child abstract method from
concrete child");
}
}
public class A1
{
public static void main(String args[])
{
ConcreteChild obj = new ConcreteChild();
obj.parentMethod1();def of non abstract method from parent
obj.parentMethod2();def of parent abstract method from
abstract child
obj.childMethod1();def of non abstract method from abstract
child
obj.childMethod2();def of child abstract method from
concrete child
}
}
| Is This Answer Correct ? | 0 Yes | 0 No |
What are virtual functions?
How do you do a line break in java?
How do you sort words in java?
Where is core java used?
Why are pointers not secure?
Explain about java sdk?
What is numeric promotion?
Difference between keyword and identifier.
What do u mean by method and also contructer in java ?
Explain the importance of finalize() method.
What happens when a thread cannot acquire a lock on an object in java programming?
In collection sorting comparable and comparator interface will be used..but why this two interfaces required..two will work same purpose so why there are two interfaces instead of one?when to use comparator and when to use comparable?