Java Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Java J2EE (14736)
J2ME (151)
Java Related AllOther (507)

Java Related Interview Questions

Questions Answers Views Company eMail

How many controlers are there in spring? Plz send me ans

1 5119

When we r go to abstract class and when we go to Interface? i have confusion this question while in interview plz clarify

HCL, Photon,

3 7278

Can we add JBoss server instance to weblogic cluster?

Accenture, IBM,

1 5907

When should I use abstract classes and when should I use interfaces?

2 5844

Which Taglibraury you used in your project? plz send me ans....which we r using generally

2 5203

What is basic concept of static in java ?

iGate,

1 6585

How to call the m1() method of Base class in below snippet ? class Base { public void m1() { System.out.println("Base m1 "); } public void m2() { System.out.println("Base m1 "); } } ====================== class Derived extends Base { public void m1() { System.out.println("Derived m1"); } public void m3() { System.out.println("Derived m3"); } public static void main(String[] args) { Base ob=new Derived(); ob.m1(); //System.out.println("Hello World!"+ob.m1()); } }

Cap Gemini, TCS,

6 9539

In HashSet duplicates are allowed while adding to the HashSet, but while retreiving the object from HashSet is not shown the duplicate values, WHY ?

Cap Gemini,

2 7433

When to use the Collection Classes(HashSet, LinkedHashSet, TreeSet....etc) in real time scenario ?

Cap Gemini,

1 10213

Explain the OOPS concept in Realtime Scenarion ? Take example as CAR. Please explain indetail ?

Cap Gemini,

1 3113

What is the difference between Enumeration and Iteration interfaces? What is the way of to retreive the objects from these interfaces ?

Cap Gemini,

1 6157

What is the difference between static synchronize() metod and synchronize() method?

Polaris,

1 3794

How can we get one Interface methods whit out using implementation of interface

Oracle,

1 4070

Why wait(),notify(),notifyAll() methods defined in Object class althought we are using in only threads.

Mphasis,

1 2929

can we write two same methods in outer class and innerclass.

3i Infotech,

1 3386

Un-Answered Questions { Java Related }

Write a program to find the whether a number is an Armstrong number or not?

1093

Explain public static void main(string args[]) in java.

1061

what is reflection api? How are they implemented?

1092

What do you know about validation plugin ?

1017

What do you understand by casting in java language? What are the types of casting?

919

What is lazy class?

474

What is the locale class?

1018

What is the difference between break and continue statements?

1113

Are jvm’s platform independent?

965

What is the java api?

981

What is the difference between filters and interceptors ?

1288

What do you mean by an interface in java?

1091

How to sort array in descending order in java?

980

How is declarative handling of exceptions done in struts ?

997

What is parsing in java?

1022

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