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 many types of packages are there in Java?

5 1453

Explain different data types in Java.

5 1434

Can we declare Pointer in Java?

5 1670

What is the default value stored in Local Variables?

5 1582

Difference in the use of print, println, and printf.

5 1327

Is it possible to make an array volatile?

4 1447

What is an object-oriented paradigm?

5 1554

What are the Memory Allocations available in JavaJava?

1 780

What is a singleton class in Java? And How to implement a singleton class?

2 913

Can you explain the Java thread lifecycle?

1 905

In the below Java Program, how many objects are eligible for garbage collection?

1 1060

What is JDK? Mention the variants of JDK?

1 902

What are Brief Access Specifiers and Types of Access Specifiers?

1 871

Explain Method Overloading in Java.

1 987

Give a briefing on the life cycle of a thread.

1 893

Un-Answered Questions { Java J2EE }

For ease of programming you can consider the maze as a 2D array with colors represented by below integer and characters (in capital letters). • B - Black • W -White • G- Green • R- Red R B W B W W W W W W B W B B W W W W W W W B W B W W W B W W W W B B W W W B W W W B W W B B B B W B W B W W B W W W B W W W B B B W W B W W W B W W B W B W W W B W B W W W W B B W W W W B W W W W W G Shortest Route Problem: • Solution that finds the shortest Route between Red and Green  White will have 1 Weight.  Red and Green carry no weights.  Shortest path is the path with less weight when you add up the weights in the path.

2017

How can we make copy of a java object?

1152

What are jms channels?

793

Why are swing components called lightweight?

977

Explain about data types?

1087

Explain what is the procedure to configure jms security?

971

How many unicode characters are there?

1066

What inheritance mapping strategies are available in hibernate?

401

Why do we use spring boot with microservices? : Spring Boot

423

What is meant by class loader? How many types are there? When will we use them?

971

Can private members of a base class are inheritable justify?

929

Which memory space does thread stack get allocated from?

896

What are loading utilities?

869

What is ejb in java?

1003

What is the form of storage space in java?

2249

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