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

Can you declare the main method as final?

1031

What are filterstreams?

1088

Can you write a java class that could be used both as an applet as well as an application?

974

What is the platform?

1013

Write a regular expression to validate a password. A password must start with an alphabet and followed by alphanumeric characters; its length must be in between 8 to 20.

1049

How to perform merge sort in java?

1072

What is a lightweight component?

1036

What are the types of inner classes (non-static nested class) used in java?

1076

How to make a write-only class in java?

1076

How many types of exception can occur in a java program?

1003

What are the differences between this and super keyword?

963

Do I need to import java.lang package any time? Why?

1 1409

Why are the objects immutable in java?

1001

Can we modify the throws clause of the superclass method while overriding it in the subclass?

1050

How can you avoid serialization in child class if the base class is implementing the serializable interface?

1096

Un-Answered Questions { Java J2EE }

How are this() and super() used with constructors in java programming?

1079

Is angular service a singleton?

435

Explain about class in java?

1126

When using a federated repository, is there a way to ensure that my file-based registry will continue to function when a LDAP server is down?

893

Give some features of interface?

1083

Differentiate between array list and vector in java.

1129

Can a class have an interface?

1006

What is the use of @repository in spring?

443

What is included in core java?

1072

What is a managed webserver?

870

What are the Class Libraries ?

1064

What is the difference between object type and object name and what happens when I keep the add referenced object option to ‘off’?

909

Is java call by reference?

991

Can you use abstract and final both with a method?

1123

What is ejb role in j2ee?

1130

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