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

Brief the life cycle of an applet.

1 734

What are the observer and observable classes?

1 1056

Explain JPA in Java.

1 833

Briefly explain the term Spring Framework

1 816

Difference between static methods, static variables, and static classes in Java.

1 938

What is a Java Virtual Machine?

1 795

. Define Copy Constructor in Java

1 826

Can Java be said to be the complete object-oriented programming language

1 829

Define Wrapper Classes in Java.

1 759

Define package in Java.

1 800

. Differentiate between instance and local variables.

1 872

. Explain Java String Pool.

1 818

What happens when the main() isn't declared as static?

1 812

Why is Java a platform independent language?

1 902

Why is the main method static in Java?

1 900

Un-Answered Questions { Java J2EE }

What is the purpose of file class?

1025

What is the main use of generics in java?

991

What is hibernatetemplate?

432

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).

2725

What do you mean by request dispatcher in servlet?

1119

Explain url encoding?

990

Does apache tomcat use struts?

916

What is use of @component in spring?

458

Difference between comparator and comparable in java?

1095

How is multi-threading gets implemented using swing?

971

Give some advantages of orm (object-relational mapping)?

1042

How does finally block differ from finalize() method?

1043

Can inner class extend any class?

1056

What are the different types of constructor?

995

What are the topics in j2ee?

936

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