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

How substring() method of string class create memory leaks?

1042

Do you think that java should have had pointers?

1049

Why is string immutable in java?

1095

Can constructors be synchronized in java?

1119

What is a class loader? What are the different class loaders used by jvm?

1103

What are various types of class loaders used by jvm?

990

Is jvm a overhead?

1093

What is the difference between long.class and long.type?

1099

What is the difference between system.out ,system.err and system.in?

1099

What is a class loader?

5 1881

Explain the different types of memory used by jvm?

1143

Which are the different segments of memory?

1076

Difference between new operator and class.forname().newinstance()?

1133

What is metaspace?

1026

What are the design considerations while making a choice between using interface and abstract class?

1090

Un-Answered Questions { Java J2EE }

What is Recursion Function?

1194

What are crossdomainconnectors in reference to web logic servers?

891

What is difference between java.util.Date and java.sql.Date?

1109

What is swing in java javatpoint?

1029

mention some of the features available in web-sphere?

853

Explain working of call by reference function invoking.

1020

Explain spliterator in java8?

1043

What's the benefit for specifying constraints like not null, primary key explicitly instead of specifying it against the column ?

960

What are the differences between heap and stack memory in java?

1051

What is orm tool?

355

What do you mean by annotation-based container configuration?

416

What is the procedure for the creation of stateless ejb?

972

What is the functionality of actionservlet and requestprocessor?

1087

What is the benefit of native sql query support in hibernate?

347

What is the difference between interface & abstract class?

1035

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