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

Explain the difference between intermediate and terminal operations in java8?

1169

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

1067

Explain spliterator in java8?

1103

Explain the difference between collection api and stream api in java8?

1034

How to create a base64 decoder in java8?

1115

What is the difference between array and array list in java?

1310

What is the difference between hashmap and hashtable in java?

1184

What is the difference between hashset and treeset in java?

1118

What is servlet? Explain

1116

What is socket in java?

1127

What is network programming in java?

1037

Explain the difference between jakarta struts and apache struts?

994

What do you mean by actionmapping?

1011

What is the difference between validation.xml and validator-rules.xml files in struts?

970

How we can configured action mapping in struts?

1067

Un-Answered Questions { Java J2EE }

What does setautocommit do?

1038

What are the kinds of http requests?

1105

What are the exceptions thrown by servlets? Why?

1256

Why spring boot is used for microservices? : Spring Boot

461

Explain tree set and its features?

1116

What purpose do the keywords final, finally, and finalize fulfill?

1161

What is backorder?

876

What are the important interfaces in hibernate?

418

What are the main advantages of orm like hibernate?

415

What is @restcontroller in spring boot? : Spring Boot

572

Can a class have multiple constructors?

1137

What is the purpose of @intrangefieldvalidator annotation?

1390

Can we write multiple catch blocks under single try block?

1156

Is empty in java?

1122

What is front controller in spring?

489

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