Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java (6529)
Advanced Java (552)
Swing (223)
EJB (402)

Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

SunOne (10)
J2EE (485)
Weblogic (694)
Websphere (573)

Java J2EE Interview Questions

Questions Answers Views Company eMail

Accenture NJ mostly ask question on Collection like 1)How to sort Objcts and how treeset sort them 2)Explain mechanism of Hashcode finding in Java 3)Name some of the Sorted collection.

Accenture,

2 8065

could you run the java program without main method?

6 16064

My interview asked what is dynamic variable in java and where we use them.

IBM,

2 7588

How we store procedure in oralce for callable statements in jdbc

2335

what are the new features of Webservices 1.6 than 1.4.From the interface and implementation aspect4.

2182

"we cannot create an object of interface but we can create a variable of it".diacuss the statement with the help of an example.

2 7714

Can I create any Marker Interface? If yes then how can I use it???

4 11657

Give me some example for getting connection from connection pooling in JBoss Server. Is Connection Pool default in Server or we have to create it? Who can create Connection Pool in a Team. How it will be accessed by the developer code?

TCS,

1 4872

how can we load a file of a user in the database table?

ITC Infotech,

3 6059

java.lang.ClassNotFoundException:oracle.jdbc.driver.OracleDr iver? I get this error at run time.I used oracle10G. I set CLASS PATH:C:\oraclexe\app\oracle\product\10.2.0 \server\jdbc\lib\ojdbc14.jar; I write JDBC PROGRAM like import java.sql.*; class Example { public static void main(String args[]) { try { Class.forName ("oracle.jdbc.driver.OracleDriver"); System.out.println("Driver Loaded"); Connection con=DriverManager.getConnection ("jdbc:oracle:thin:@localhost:1521:xe","system","salmas"); System.out.println("Driver Connected"); Statement st=con.createStatement(); ResultSet rs=st.executeQuery("select * from emp"); while(rs.next()) { System.out.println(rs.getInt(1)); System.out.println(rs.getString(2)); System.out.println(rs.getString(3)); } st.close(); con.close(); } catch(Exception e) { System.out.println(e); } finally { System.out.println("it's finally block executed"); } } }

CTS,

6 25117

Possible ways for debugging java ,javascript,jsp and servlet. Can we use System.out.println debugging java.

2 5642

please send code example of inner classes?

2 5515

how team leaders assign work for the team member like through papers,word document

TCS,

1 5868

what is the use of clone method? why user cant overwrite in sub class without its proper defination.

TCS,

2 6290

what is object deep copy and shallow copy and why it is required?

2 8990

Un-Answered Questions { Java J2EE }

What do you mean by dependency injection?

417

How can you retrieve data from the resultset using jdbc?

1072

Why is spring boot used? : Spring Boot

440

Which package is imported by default in java?

1029

How to perform merge sort in java?

1058

What is the purpose of action tag in struts.xml?

1023

What are derived properties?

432

Which are the ioc containers in spring?

440

What is the use of jsonvalidation?

1137

Define the list of pre-configured queues?

993

Explain the importance of throwable class and its methods?

1040

Name the class that is used to bind the server object with RMI Registry?

2170

Why is sessionfactory thread safe?

387

What is meant by tab pans?

1246

How can we write our own interceptor and map it for action?

1056

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