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

what is the disadvantages of using DynaActionForm in struts framework?

5 19177

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.

2254

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

iFlex, TCS,

18 55994

How to set Connection Pool size in Weblogic Server ?

Infosys,

11 39229

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

Mind Tree,

5 14402

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

Microsoft, Mind Tree, Tech Mahindra,

2 25400

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 12240

how can i connect to database in a applet ?

1 4950

when to use abstract class and when to use interface?

Exterro, iGate, IonIdea,

16 58841

what is difference between class and object?

College School Exams Tests, HCL,

43 92243

when,where and how to use abstract class and interface

2 5698

explain oops concepts with examples?

AbhiBus, Beeline, DELL, HCL, Satyam, TCS, VLS, Wipro,

29 204790

how can u create the object with out new operator

2 9098

why the constructor should be used in class,if there is no constructor what will happen?

4 7810

explain the clone method and clonable interface

1 7609

Un-Answered Questions { Java Related }

Explain where are the files placed while deploying the resource adapter in web logic server?

1004

What is difference between calling start() and run() method of thread?

1152

Is jpa faster than jdbc?

892

What is cookie in servlet?

1073

Similarity and difference between static block and static method ?

937

What is the use of sessionfactory?

389

What is jboss hibernate?

488

What are the different features of the spring framework?

411

What is lexicographically smallest string?

1086

What is jpa and hibernate?

395

How many ways can we create singleton class?

986

What is spring layout java?

472

What are multiple inheritances?

1126

What are the Static and Dynamic Variables? Differentiate them.

1127

Is a boolean variable?

1023

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