Home Tutorialhelp Comment How to differntiate a Abstrat class and interface

 
 

Comment

Thiyagarajan
How to differntiate a Abstrat class and interface,
January 22, 2007 at 11:18 PM

How to differntiate a Abstrat class and interface method.Mostly similar.Where to use a Abstrat method and Where to use interface concept
View All Comments | View Tutorial
Advertisement
Related Tutorial and Articles
Java Interview Questions

Interface in JAVA - Java Interview Questions
Interface in JAVA  How interface fulfills all th facilities which.... To sort out this flaw java has provided Interface which supports the Multiple... on the Interface. http://www.roseindia.net/java/java-exception/create-interface.shtml 

Java Interview Questions

marker interface - Java Interview Questions
marker interface  how to create our owen marker interface ? can u give me one example  Hi Friend, Try the following code: interface markerImp { } class MarkerTest implements markerImp{ } public class 

Java Interview Questions

java bits 8 - Java Interview Questions
java bits 8  Assume that country is set for each class. Given: 10. public class Money { 11. private String country, name; 12. public getCountry() { return country; } 13.} and: 24. class Yen extends Money { 25. public 

Java Interview Questions

Interface - Java Interview Questions
Interface  Respected sir why we use Interface in java? because we... be an instance of a class that implements the interface. public Object findLargest... can still mark the class as abstract. Developing by interface helps in object 

Java Interview Questions

INTERFACE - Java Interview Questions
INTERFACE  Why Use Interface in Java?i want region ?plz post answer   Hi Friend, Interfaces form a contract between the class... the methods of the interface are implemented with the correct signature.Interfaces 

Java Interview Questions

JAVA INTERFACE - Java Interview Questions
JAVA INTERFACE  Can Any Interface will have inner classes... Whether an interface be final????  Hi friend, Yes, as for example, public interface TestInterface { // Inner class inside an interface 

Java Interview Questions

Marker Interface - Java Interview Questions
.  Hi friend, Marker interface : In java language programming... more information on Marker interface visit to : http://www.roseindia.net/java...Marker Interface   Hi Deepak, Marker interface means 

Java Interview Questions

interface variables - Java Interview Questions
interface variables  why interface variables are final? explain me... modifier ensures the value assigned to the interface variable is a true constant...,class implementations can change value of fields. Then they would become a part 

Java Interview Questions

ABSTRACTION AND INTERFACE - Java Interview Questions
ABSTRACTION AND INTERFACE  When Use Abstract?When Use Interface ?I... to allow any one to create object of our class, we define the class as abstract. When... the following links: http://www.roseindia.net/help/java/a/abstract-keyword.shtml 

Java Interview Questions

Marker Interface - Java Interview Questions
Marker Interface   Hi Friends, Marker interface means a method which has no methods. so what is d use of tat. I read "It is used to check that whether the instance belongs to that class". then wat is d use 

General

Collection of Large Number of Java Interview Questions!
Interview Questions - Large Number of Java Interview Questions Here you.... The Core Java Interview Questions More interview questions on core Java.. Read 

Java Interview Questions

java questions - Java Interview Questions
java questions  HI ALL , how are all of u?? Plz send me the paths of java core questions and answers pdfs or interview questions pdfs or ebooks :) please favor me best books of interviews questions for craking 

JSP Interview Questions

java - JSP-Interview Questions
java  hi.. snd some JSP interview Q&A and i wnt the JNI(Java Native Interface) concepts matrial thanks krishna  Hi friend, Read more information. http://www.roseindia.net/interviewquestions/jsp-interview 

General

Java Interview Questions - Page 8
Java Interview Questions - Page 8   .... Question: What must a class do to implement an interface... the Java Native Interface. For each and every component added 

Java Interview Questions

java - Java Interview Questions
java  if marker interface is empty how it will give special behaviour to its implementation class object   Hi Friend, In java language... of an object then you have to implement the Serializable interface otherwise 

Java Interview Questions

inner class - Java Interview Questions
Java Inner Class  How many classes we can create in an inner class?  How many classes we can create in an inner class ANS :- Within Main... to the requirement there is no limit . In Java programming language, when a class is defined 

Java Interview Questions

OBJECT CLASS - Java Interview Questions
OBJECT CLASS  How To Find Out How many Objects Create?How Many Object... for a particular class you need to write code in the constructor in such a way that it keeps the track of the new instances of the class.Here is the example. class 

Java Interview Questions

java - Java Interview Questions
in advance Vinod   Hi friend... Externalizable interface : When user use Serializable interface, class is serialized by default...java  What is Externalization and how it can be implement in our 

Java Interview Questions

Inner class - Java Interview Questions
Inner class  whether inner class can implement any interface(Runnable... the problem : class InnerClass1 { private int countDown = 5; private Inner inner; private class Inner extends Thread { Inner(String name 

Java Interview Questions

Java - Java Interview Questions
Java  How to use C++ code in Java Program?   Hi friend..., and class definitions are used in lieu of typedef. The end result is that Java... by declaring Java class members that are static and final. For data members in Java 

Servlet Interview Questions

java - Servlet Interview Questions
java  servlet interview questions  Hi friend, For Servlet interview Questions visit to : http://www.roseindia.net/interviewquestions/servlet/ Thanks 

Java Interview Questions

java - Java Interview Questions
java  what is abstract class ?how can we achieve dynamic polymorphism... a superclass method or implements an interface. For example, any class may override... following URL. http://java.sun.com/docs/books/tutorial/java/IandI/abstract.html http 

Java Interview Questions

java - Java Interview Questions
the command line as: java MyProg I like tests what would be the value of args[ 1... until a value is assigned 3. Which of the following are Java keywords.... Represent the number 6 as a hexadecimal literal. 8. Which of the following 

Java Interview Questions

Interfaces - Java Interview Questions
(); } interface in2 { void method(int i); } public class InterfaceImplementation... interfaces are implemented by a single class. so now i would like to generate different code of same methods of different interfaces in single class? my query 

Programming Tutorials

Corejava Interview,Corejava questions,Corejava Interview Questions,Corejava
Core Java Interview Questions Page2   ...-seen problems for anyone who would create a sub-class.   Q 8. How many... than an interface ? Ans :  A Java interface is an abstract data type like 

Servlet Interview Questions

java - Servlet Interview Questions
Java Design Patterns Interview Questions and Answers  I need to know Java Design Patterns with the help of Interview Questions and Answers  Hi malli,GenericServlet is the super class of HttpServlet calssjava soft 

Programming Tutorials

Corejava Interview,Corejava questions,Corejava Interview Questions,Corejava
Core Java Interview Questions Page1   ... class ?  Ans: Java does not allow an interface to extend an abstract class...; A Java interface is an abstract data type like a class having all its methods 

Java Magazine Questions

interface
interface  why do we need interface in java..if it`s usefull for to obtain multiple inheritance in the sense how it gonna be achieved...and i can achieve multiple inhertitance by extends one class with another (by multilevel 

Java Interview Questions

HTMLParserTxt - Java Interview Questions
the errors. How I get the follwing plugins. I mean from where? Thanks a lot... org.apache.xerces.dom.CoreDocumentImpl; public class HTMLTextParser... interface of DocumentFragment, so no typecast needed: processNode(doc 

Programming Tutorials

Corejava Interview,Corejava questions,Corejava Interview Questions,Corejava
Core Java Interview Questions Page3   ... requires declaration of Java interface types for the driver, connection..._name; Q 8. How can I select records between two dates ? Ans : In order 

Java Interview Questions

interface
? In such a case how can we say that java doesn't supports multiple inheritance   Through interface, we can achieve the multiple inheritance. Java does...interface  What is the exact use of interface in real time scenario 

Programming Tutorials

Java Programming: Chapter 8 Exercises
Programming Exercises For Chapter 8 THIS PAGE CONTAINS programming exercises based on material from Chapter 8 of this on-line Java textbook... BirthdayProblemDemo.java. Here are some related questions: How many random people 

Java Interview Questions

Java Of Sailendra - Java Interview Questions
Java Of Sailendra  Whats the use of comparator interface? How can we... interface is used to sort a collection by custom sorting. To sort the data elements a class needs to implement Comparator or Comparable interface. For more 

Java Interview Questions

java - Java Interview Questions
java  java's multithreading system is built upon_____class and________interface 

Java Interview Questions

Difference between extends thread class vs implements runnable interface - Java Interview Questions
Runnable Interface, you can run the class several times whereas Thread have...Difference between extends thread class vs implements runnable interface  Hi Friends, can you give difference between extending thread class 

Java Interview Questions

hint - Java Interview Questions
hint  Dear roseindia, i want the java interview question... the following link: http://roseindia.net/interviewquestions/ Here you will get lot of interview questions and their answers. Thanks  thanks for your 

Java Interview Questions

Java Servlets - Java Interview Questions
Java Servlets  1.What is Pojo class? How and where it is used? 2.Can... " THE JAVA CLASS CANNNOT EXTENDS ANY PREDEFINED THIRDPARTY API CLASS OR INTERFACE". 3... where can i download NetBean 5.5.1?  Pojo class is normal java 

Java Interview Questions

clone() method of object class - Java Interview Questions
clone method of object class  Why clone() method is defined in Object class.As clone() method is inherited when Clone able Interface is implemented? Please help me in this regard. Thanks in advance 

General

Core Java Interview Questions!
Core Java Interview Questions   ...(); }   Question: How to define an Interface? Answer: In Java Interface... and Map.    Question: Is Iterator a Class or Interface 

Java Interview Questions

difference between marker and tag interface - Java Interview Questions
); } Marker Interface In java language programming, interfaces with no methods.../master-java/interface.shtml Thanks  Hi friend, Tag interface... a marker interface, and methods that interact with instances of that class test 

Java Interview Questions

java - Java Interview Questions
java  i want to java&j2ee interview questions. Regards Akhilesh Kumar  Hi friend, I am sending you a link. This link will help you. Read for more information. http://www.roseindia.net/interviewquestions 

Servlet Interview Questions

java - Servlet Interview Questions
java  Which interface or class is implementing or extending ServletContext interface 

Java Interview Questions

core java - Java Interview Questions
languages .In java it states using of one single interface with a set of actions...core java - Use of polymorphism in object oriented programming   Hi... in creating a java program we create method void Amount( ){ ----- -----}Amount (int 

Java Interview Questions

java - Java Interview Questions
Java Abstract Class and Interface Info  What are the Java Abstract Class and Interfaces?  Hi Bharathi Abstract Class - a class which is declared as a abstract is know as abstract class,it may include abstract methods 

General

How to add JDK 8 support in Eclipse?
Learn how to update Eclipse and add the JDK 8 support? This tutorial... of video tutorial provided here. You will learn how to download and install the JDK 8... of JDK 8. Since Eclipse is one of the most used IDE for developing the Java 

Java Interview Questions

interview question - Java Interview Questions
interview question  hello i want technical interview question in current year   Hi Friend, Please visit the following links: http://www.roseindia.net/interviewquestions/ http://www.roseindia.net 

Java Interview Questions

java - Java Interview Questions
java  difference between abstract and interface?Why abstract class needed?  Hi Friend, Difference between Abstract class and Interface: 1)An interface represents only the boundaries of a class/classes 

General

Java Interview Questions 3
Java Interview Questions page 3   ... serialization tools that your class is serializable. Question: . How many... you use Serializable interface, your class is serialized automatically 

Java Interview Questions

interview questin of java - Java Interview Questions
interview questin of java  what r the common question of core & addvance java in interview?  Hi Garima, I am sending you a link...://www.roseindia.net/interviewquestions/corejava.shtml http://www.roseindia.net 

Java Interview Questions

Java - Java Interview Questions
Java and Collection Interfaces  I wanted to know more about Java and Collection Interfaces  Java and Collection InterfacesInterface : Types of Interfaces Interface ,simply say something to a media by using another 

Java Interview Questions

Reg:Encapsulation - Java Interview Questions
Reg:Encapsulation  where we use encapsulation in programs? how we.... When we want to keep the data safe from outside interface and misuse, we... in a class private and providing access to the fields via public methods. Thanks 

Java Technology Tutorials

Difference between abstract class and an interface
Difference between abstract class and an interface The difference between abstract class and interface is one of the most popular question in the interview... between abstract class and interface in java. Abstract class is a class 

Java Interview Questions

java - Java Interview Questions
with explanation.. i need purpose not the definition. and when to use interface and when to use interfaces.  Hi Friend, Interface is the collection... with static and final declarations ). All the methods in an interface are "public 

EJB Questions

interview questions - EJB
interview questions in Java  Need interview questions in Java ...://www.roseindia.net/ejb/Interview Questions: http://www.roseindia.net.... If you really want to win the interview then follow the steps.Learn core java http 

Java Interview Questions

connection pooling - Java Interview Questions
that implements the ConnectionPoolDataSource interface. The ConnectionPoolDataSource would return a Connection object that implemented the PooledConnection interface... org.apache.commons.pool.KeyedObjectPoolFactory; public class JConPool { public 

Programming Tutorials

Core Java Interview Question, Interview Question
;    Core Java Interview Questions and answers We are constantly trying to provide best Core Java Interview questions.   Core Java Interview Question Page 1 How could Java 

Java Interview Questions

java - Java Interview Questions
are set to be abstract, an interface is used. A class implementing an interface... and Iterator in Java programming language.  Difference between Enumeration... Class and InterfaceAbstract ClassAn abstract class can contain non-abstract 

Java Interview Questions

Java - Java Interview Questions
Interview interview, Tech are c++, java,  Hi friend, Now get more information. you can lean all type interview question by following link link.http://www.roseindia.net/interviewquestions 

Java Interview Questions

Java - Java Interview Questions
Java   How many types of Class Loaders Are there?  Hi friend, Each Java class must be loaded by a class loader. When the JVM is started... the classes in core Java libraries 2. Extensions class loader : loads the classes 

Java Interview Questions

java - Java Interview Questions
to be remember: *)Hashtable is part of legasy class we can use enumerator interface of this hashtable class. *)Hashtable will not allow null key nor values... more information to visit.... http://www.roseindia.net/java/example/java/util 

Java Interview Questions

Binding - Java Interview Questions
Binding   Hi Deepak , Interface makes runtime binding where abstract class is compile time binding.you can achieve multiple inheritance through Interface but abstract class not allow. Thank u in advance 

Java Interview Questions

java - Java Interview Questions
a package, class, interface, method, or variable. It allows a programmer... inserts a call to the parameterless super class constructor. Interface...java  what is meant by the following fundamentals as used in java 

Java Interview Questions

java - Java Interview Questions
java   How to form a Singleton class?  Hi Friend, Please visit the following link: http://www.roseindia.net/java/beginners/SingletonPattern.shtml Hope that it will be helpful for you. Thanks 

Java Interview Questions

java - Java Interview Questions
java  explain how Error class can be used in the Exceptional Handling 

Java Interview Questions

java - Java Interview Questions
java  how many ways we can load the class INTO JVM and what are they? what is the hierarchy the JVM to look for class 

Java Interview Questions

java class - Java Interview Questions
java class  What is the speciality of class? what is the use... having same name,same parameters and same return types of a super class in its subclass. For ex- class A { int i; A(int a, int b) { i = a+b; } void add 

Java Beginners

Interface and Abstract class
and Abstract Class 1)Main difference is methods of a Java interface are implicitly...)Members of a Java interface are public by default. A Java abstract class can have... interface should be implemented using keyword 'implements'; A Java abstract class should 

Java Interview Questions

java - Java Interview Questions
java  hi friends what is the use of abstract class?if i override a metohd in subclass, also i get same as abstract class? what is exact use... implementation. All the methods in any interface are abstract by default. Abstract 

Programming Tutorials

Corejava Interview,Corejava questions,Corejava Interview Questions,Corejava
Java Interview Questions       Core java Interview Question page1 An immutable... of an interface.    Core Java Interview Question Page3 Generally Java 

Java Interview Questions

java - Java Interview Questions
/interviewquestions/ Here you will get lot of interview questions...java  hello sir this is suraj .i wanna ask u regarding interview questins in java .wat normally v see in interviews (tech apptitude)is one line 

Java Interview Questions

java - Java Interview Questions
? Interfaces form a contract between the class and the outside world, and this contract is enforced at build time by the compiler.All the methods of the interface 

Java Interview Questions

OOPs - Java Interview Questions
OOPs  i know what is an abstract class and what is an interface but i wanted to know in which scenarios i use them and why nowadays java is stressing on interface programming.and i also want to know where do we exactly implement 

Java Interview Questions

java - Java Interview Questions
while searching on google but if you want you can learn it in a interview preparation manner as well.. I have a java interview question URL from where you.../interviewquestions/corejava.shtml I think this is enough.. but u can see http 

Java Interview Questions

java - Java Interview Questions
java  how much memory is taken by class Two object the below is the program how can i find the memory of the below program is there any method to find the below class One extends Object { int x; } class Two extends One 

Java Interview Questions

java - Java Interview Questions
by multiple class loaders. EXAMPLE FOR THIS SINGLETON JAVA CLASS public class...java  what is a singleton class? why and where we used and give me one example  hai friend this is jagadhish A singleton is a class 

Java Interview Questions

java - Java Interview Questions
Java factorial program   I wanted to know ..how to create a factorial program in Java using recursive method.Thanks in Advance!  Hi friend public class FactorialExample{ public static long factorial(int n){ if(n < 

Java Interview Questions

java - Java Interview Questions
can get singleton java class.That mean that java class will allow one object to access that class. With this we can avoid multithreading.This Singleton java...java  can you please send complete information about singleton class 

Java Interview Questions

java - Java Interview Questions
the following link: http://www.roseindia.net/java/exceptions/how-to-throw...java  diffrence between final and static keywords? legacy class... or method can be accessed without creating an instance of the class. 2)A final 

Java Interview Questions

abstract class - Java Interview Questions
abstract class  Explain the abstract class and abstract method...://www.roseindia.net/java/master-java/abstract-class.shtml http://www.roseindia.net/help/java/a/java-abstract-class.shtml Hope that it will be helpful for you. Thanks 

Java Interview Questions

java - Java Interview Questions
java   how can we create private constructor? what is its significance?  private constructors prevent a class being explicitly instantiated by other classes We can create private default constructors so that other 

Java Interview Questions

java - Java Interview Questions
some of the elements in integer type of Array,how to find the second highest... the predefined methods in java)like simple java logic. can u give the brief idea. thanks & regards sampath reddy  public class getLargestNumber{ public 

Java Interview Questions

corejava - Java Interview Questions
corejava  how can we make a narmal java class in to singleton class 

Java Interview Questions

INNERCLASSS - Java Interview Questions
, Inner class is defined within a Class. Example is: public Class A{ private class b{ } } More at http://www.roseindia.net/help/java/i/inner... the local final varaibles.It provide alternate interface to an existing class 

Java Interview Questions

java - Java Interview Questions
java  how java is platform independent?  hai friend.... the platform independence of java is juz bcoz of THE BYTECODE,can be called... the ".java" file and converted into .class file which is byte code. This byte have 

Servlet Interview Questions

interview question - Servlet Interview Questions
interview question  What is Servlet? Need interview questions on Java Servlet  Servlet is one of the Java technologies which is used... according to your experience.And for collection of Java Servlet Interview Question you 

Java Interview Questions

Threads - Java Interview Questions
then it will make your class unable to extend other classes as java is having single inheritance... to Runnable Interface. 3)Using Runnable Interface, you can run the class several...Threads  creating a thread is two ways?extends with thread class 

Java Interview Questions

Interfaces - Java Interview Questions
interfaces are implemented by a single class. so now i would like to generate different code of same methods of different interfaces. eg: ---- interface i1 { void method1(); } interface i2 { void method1(); } public class 

Java Interview Questions

java - Java Interview Questions
not one record but many record and field. How to read the data from database record and go to file txt.Thank's import java.io.*; public class... in solving the problem : public class FileWrite{ public static void main 

Java Interview Questions

Pattern class - Java Interview Questions
Pattern class  1)Write a program to find out numeric occurences in an input file by using pattern class 

Java Interview Questions

JAVA - Java Interview Questions
JAVA  how to merge the sorted arrays i want sourse code?  Hi Friend, Try the following code: import java.util.*; public class MergeSortedArrays { public static void main(String[] args) { int[] arr1 = {1, 3 

JSP Interview Questions

java - JSP-Interview Questions
Java database connectivity and accessing the database  Please explain, what is Java database connectivity and how to access the database?  Java Database Connectivity in short JDBC is an interface used to access database 

Java Interview Questions

Java Interview - Java Interview Questions
Java Interview  Please provide some probable Java interviewe Question. Thanking you. Pabitra kr debanth.  Hi friend, I am sending.... http://www.roseindia.net/interviewquestions/ Thanks 

Java Interview Questions

java - Java Interview Questions
Java Development  I need a Job in Java Development..so preparing for it. Can anyone please guide me how to prepare and what are the common questions that can be asked at interview 

Java Interview Questions

java - Java Interview Questions
java  1) how does a varible of a primitive type differ from...) of a class. 2) Primitive variables store primitive values whereas Reference variables...: import java.util.*; import java.text.*; class Tax{ public static void 

Java Interview Questions

Synchronization - Java Interview Questions
Synchronization  Dear Sir my doubt is If we cannot use synchronization for a class then how a vector class is called as synchronized 

General

Java Interview Questions - Page 6
Java Interview Questions - Page 6       Question:  What is the Vector class? Answer: The Vector class provides the capability to implement 

Java Interview Questions

list - Java Interview Questions
list  Hi all Naturally in java a list will allow duplicates...) method of Interface List public boolean contains(Object o) Returns...*; class ListExample { public static void main(String[] args) { List 

Java Interview Questions

printer - Java Interview Questions
Connecting printer in Java  using java code how to get connected... to get that done. We have many packages in java to get the done.. go through them and u will find the appropriate class and method to do that.  Use 

Java Interview Questions

corejava - Java Interview Questions
singleton java implementation  What is Singleton? And how can it get implemented in Java program?  Singleton is used to create only one... in the whole application.Example of Singleton Class in JAVASingleton.java 

Java Interview Questions

IMMUTABLE - Java Interview Questions
IMMUTABLE  How To Make A Class Immutable?  Hi Friend, To make a class immutable we must restrict changing the state of the class.... for example, final class ImmutableClass{ private final int count; public 

Advertisements Advertisements
 

 

 

DMCA.com