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

Can Container Managed Bean-Managed Transaction ?

Sony,

3 7159

important features of java which differenciate it from c++

3 7286

What is the use of log4j and how to make use of that in a application?

2 6361

public class Garbage { int a=0; public void add() { int c=10+20; System.out.println(c); System.out.println(a); } public static void main(String args[]) { Garbage obj=new Garbage(); System.gc(); System.out.println("Garbage Collected"); obj.add(); } } Above is a code in java used for garbage collection. object obj has been created for the class Garbage and system.gc method is called. Then using that object add method is called.System.gc method if called the obj should be garbage collected?

6 8506

Why cant we define System.out.println() inside a class directly?

5 11831

Can we write a constructor for a Servlet class ? if yes how ? if no why not ?

10 20024

What are the mobile viruses?

1 4714

I want to know how to connect to DataBase from our MIDP application. I need just code for this

NIIT,

4 8080

If all the methods in abstract class are declared as abstract then what is difference between abstract class and in interface?

Infosys, Synechron,

8 15327

why marker interfaces are there in java

Digital Group,

4 9772

How to validate the request (Eg:user name and password) in session(http session)? not in LDAP server ?

Saksoft,

1 6004

how we can implement interface in jsp ?

Google,

2 13876

In C we use only compiler. Why java uses both compiler and interpreter? What is its significance?

5 18401

can we override service method in my servlet class..?? if yes or no why ??

IBM,

7 38396

What are Advatages of Overloading and Overridding.

TCS, Wipro,

8 26114

Un-Answered Questions { Java Related }

What is the difference between filters and interceptors ?

1299

what is reflection api? How are they implemented?

1102

How to sort array in descending order in java?

986

Find Best Job Vacancies across the world on Jooble!

133

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

1063

How to create a base64 decoder in java8?

1131

What is a constructor overloading in java?

1121

What is the first argument of the string array in main method?

1025

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2415

What is action chaining ?

1158

What is parsing in java?

1030

explain different ways of using thread? : Java thread

1079

What if I write static public void instead of public static void?

928

What do you know about validation plugin ?

1024

Are jvm’s platform independent?

975

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