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 7002

important features of java which differenciate it from c++

3 7160

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

2 6278

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 8280

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

5 11650

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

10 19662

What are the mobile viruses?

1 4621

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

NIIT,

4 7935

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

Infosys, Synechron,

8 15013

why marker interfaces are there in java

Digital Group,

4 9595

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

Saksoft,

1 5934

how we can implement interface in jsp ?

Google,

2 13741

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

5 18211

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

IBM,

7 38081

What are Advatages of Overloading and Overridding.

TCS, Wipro,

8 25789

Un-Answered Questions { Java Related }

What is fail fast in java?

1187

What is the difference between message driven beans and stateless session beans?

1010

What is the meaning of odm?

395

What design pattern you have used in your project? I answered Factory pattern, how it is implemented? What are its advantage? Do know about Abstract Factory?

2523

What are ejbs used for?

914

How can you run a servlet program?

1105

What is the JDBC syntax for using a literal or variable in a standard Statement?

1010

Can java program run without jre?

1030

How do you check if java is installed on windows command prompt?

936

What is the use of coding?

989

What is files manifesting?

2225

How to determine SGA site?

2569

Why does it take so much time to access an applet having swing components the first time?

1952

What is hikari in spring boot? : Spring Boot

540

Explain the spring framework.

446

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