Answer / nikhlesh gupta datia(m.p.)

Abstract Method:- The method which is define in the class without bodies that is without implementation is call as Abstract Method. & all the Abstract Method must be define with abstract keywords.

Abstract Class:- The class which is define with some abstract method is called as Abstract Class. & all the Abstract Method must be define with abstract keywords. We cannot created the object of abstract class.

Answer / niranjanravi

Abstract class is a class which contains atleast one
abstract method in it.OTHER methods maybe abstract or
concrete.

Answer / tarun

Abstract Class : An abstract class can not be initialized.
Any class can extends it. The methods declared in the
abstract class can be abstract or not.
Abstract Method : If any method is declared as abstract
method it should be in a abstract class. And it can be
override by any other class which is extending it. if method
is declared as abstract it should not contain body.

For Example:
public abstract class AbstractEx {
public void reset(){
System.out.println("The Sun Rises in the east");
}
public abstract void method();
protected abstract void newmethod();
}

Answer / priyanka tiwari

abstract class contains abstract method and if method will
be abstract the class should be abstract class.

Answer / ravikiran(aptech mumbai)

abstract class contains abstract as well as non abstarct
methods,And the class cann't get instantiated.

abstarct method is the one which must get override in the
subclass

my method "abc" return array of interface "xyz" and "pqr" is abstract class implements abc and class "jkl" extends pqr My problem 1) when i call abc it retrun array xyz how can i do this hint xyz refer_xyz = new jkl(); but i can't create array. 2)I want to access method of jkl using reference of xyz??

1 Answers  

what is inner class?

6 Answers   HCL,

Without creating a new object, How you can retrieve a String or other object?

1 Answers  

What is garbage collection in Java, and how can it be used ?

32 Answers   Accenture, HCL, Infosys, Sara, SITS, TCS, Wipro,

What are heap memory and stack memory and what are memory tables.

0 Answers   Aspiring Minds,

How can you traverse a linked list in java?

0 Answers  

Can memory leak happen java?

0 Answers  

Is java supports multiple inheritance? explain?

12 Answers   BUET, Inforica,

how can we synchronize Hash map?

3 Answers   CTS,

When should we create our own custom exception classes?

0 Answers  

What is java ceil?

0 Answers  

what is difference betwenn Access Specifier and Access Modifier ????

2 Answers