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 19192

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 56046

How to set Connection Pool size in Weblogic Server ?

Infosys,

11 39262

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

Mind Tree,

5 14416

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

Microsoft, Mind Tree, Tech Mahindra,

2 25417

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 12243

how can i connect to database in a applet ?

1 4951

when to use abstract class and when to use interface?

Exterro, iGate, IonIdea,

16 58894

what is difference between class and object?

College School Exams Tests, HCL,

43 92325

when,where and how to use abstract class and interface

2 5703

explain oops concepts with examples?

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

29 204881

how can u create the object with out new operator

2 9103

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

4 7828

explain the clone method and clonable interface

1 7611

Un-Answered Questions { Java Related }

What is pojo class in java?

1128

What is mean by jms?

929

What is difference between static variable and global variable?

1077

Why are lists ordered in java?

1033

What is isolation level? How to set it?

2236

What is meant by gc, prallel gc, full gc and explain it?

1012

What is the platform?

1017

What is crudrepository in spring?

477

How many bean scopes are supported by spring?

511

What is a methodologist?

1091

Assume a thread has lock on it, calling sleep() method on that thread will release the lock?

1123

What are different data types?

1044

What is an iterator java?

1136

What is transaction boundary in hibernate?

556

mention what functionality does caching proxy server provides?

893

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