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

how to make a index.jsp for running the site in internet and find an error for connection with weblogic server and java that give an error invalid object name.and how to maintain session.

2242

What is Virtual Host in Weblogic , how to create it & what is the advantage ?

iFlex, TCS,

18 55850

How to set Connection Pool size in Weblogic Server ?

Infosys,

11 39144

what is the difference b/w PUT and POST method to send data to the server

Mind Tree,

5 14337

what s the difference b/w EJB 2.0 and EJB 3.0 technically

Microsoft, Mind Tree, Tech Mahindra,

2 25353

In the first round, there are 30 aptitude and 30 java questions. We are suppose to finish both the papers within 60 minutes. I cleared this round. Next was test for programming skills. In this section, Some 7 n's were asked. 1. What is the difference b/w sleep(1000) and wait(1000) 2. what is the diff b/w static block and static function? 3. Write a program to validate IP address using string tokenizer. 4. Write a program to create singleton class 5. write a function to reverse the string 6. Write a prog to print prime nos upto n. EX: If n=9, It shld print 1,2,3,5,7 7. One program on collections- Write a program to print no. of times a number is repeating in an array. EX- {1,3,1,2,5,7,3,7,34,3,8,3} It should print: 1- 2 times 3- 4 times and so on 7. Write a func to print fibonocci series After this I had technical interview, which went on for. 60 mins or so. There were qn's about multi threading, Exception handling and collection classes. Knowledge about collections was very important for the post I was interviewed for.

Huawei,

1 12218

how can i connect to database in a applet ?

1 4933

when to use abstract class and when to use interface?

Exterro, iGate, IonIdea,

16 58692

what is difference between class and object?

College School Exams Tests, HCL,

43 91803

Un-Answered Questions { Java J2EE }

What is the flow of requests in struts based applications?

994

What does @repository annotation do?

459

How can I set deployment order for applications?

997

What is spring and struts in java?

980

What is persist in hibernate?

388

What is Java Annotations?

1098

What do you mean by an object in java?

1128

What is mockmvc in spring?

416

What are controls and what are different types of controls in awt?

1023

What are the benefits of using spring?

498

What kind of variables can a class consist?

1057

How do you compare objects in java?

947

What is j2ee stand for?

874

Why does the tag url-encode javascript and mailto links?

1005

how the HTML data stored in web server?

2633

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