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

Why do we use DAO?

Accenture, Tech Mahindra,

3 18901

what are upcasting and downcasting?

5 18615

what is the diff b/w arraylist and vector?

Code Genesis, Genesis, Sprintine Labs,

6 12041

PreparedStatement is a pre compiled statement but where it's pre compiled ?

4 12712

What is actual difference between statement,prepared statement and callable statement and when we have to use it? pls post a answer with code and clear explanation. thanks

2 14462

Write an algorithm program in java for the following question.. 1) S is a set of integers.X is an integer obtained by sum of two digits in S. Write logic for whether or not the X is from the S. The time of algorithm should not exceed o(n logn).

1 2272

Write an algorithm program in java for the following question.. In a VLSI design techniques,they used rectangles to design circuits. EVery rectangle is to be placed according to x,y coordinates. Check whether or not two rectangles overlap each other. Here overlapping of rectangles is acceptable, if 1) one rectangle intersect with other. 2) one rectangle fully covers other. The time of algorithm should not exceed o(n logn).

1 2805

can we access the super class method using subclass object?

4 8657

what is use of marker interface? give me good example?

2 6368

what is use of threads how many ways to create thread

iTrust, Verizon,

3 10960

is it possible to create single instance of java class per session in web application

4 11523

where exactly the servlets and jsp's are stored?

CG-VAK, JHJ, TCS,

6 15233

can we create a own jdbc driver? how can we create?

HCL,

1 5626

what are the drawbacks of JDBC? explain briefly?

5 42311

what is the difference between SENSITIVE and INSENSITIVE?

1 9319

Un-Answered Questions { Java J2EE }

Write a program to print count of empty strings in java 8?

1078

What is an object in java and how is it created?

1128

Find Best Job Vacancies across the world on Jooble!

133

hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

2862

Hi frnd can i any one kindly can post for me portlet,hibernate and spring example application and with flow explantion configuration using Jdeveloper.and related links ar tutorials kindly please send me .its urgent for me .thanks in advance...........else can any one send to kondaiah.goddeti@gmail.com

2258

What is the difference between break and continue statements?

1117

What do you mean by an interface in java?

1095

How to sort array in descending order in java?

986

What is action chaining ?

1158

What are the contents on web.xml in struts application ?

1058

What is the difference between equals() and == in java?

1032

Is minecraft 1.15 out?

1038

what are the different modes of archival? Explain each mode in two lines each?

994

What is a constructor overloading in java?

1121

Realized?

2256

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