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Java J2EE Interview Questions
Questions Answers Views Company eMail

What is a prefix function.write down a code to compute prefix function.

 1070

What are some alternatives to inheritance?

 1122

How can you make sure that your singleton class will always return single instance in multi-threaded environment?

 1040

Difference between static synchronization vs. Instance synchronization?

 1138

Explain numeric promotion?

 1121

What is contract between hashcode and equal method?

 1063

If you do not want your class to be inherited by any other class. What would you do?

 1018

What is java’s garbage collected heap?

 993

What is re-factoring in software?

 1070

What is static synchronization?

 1125

What is annotation in java?

 1070

What are static methods?

 1062

What is a map? What are the implementations of map?

 1110

Which package is imported by default?

 1098

What are the restrictions imposed on method overriding?

 1027

Un-Answered Questions { Java J2EE }

Wat is jms client?

915

What is the advantage of functional interface in java 8?

1009

What are the different types of interfaces in the api component?

995

How do weakhashmap works?

1170

What you can do with node manager?

990

What is jms in websphere?

881

Which HTTP method is non-idempotent?

1152

What is method reference?

1000

Is boolean a wrapper class in java?

1067

What is entity beans in ejb with example?

997

FOR EXAMPLE WE R HAVING TWO LIST ELEMENTS ..BOTH LISTS CONTAINS ID,NAME,PLACE ..I NEED TO COMPARE BOTH IDS IN TWO LISTS,IF ID'S R SAME MEANS WE HAVE ADD THE DETAILS(LIKE NAME,PLACE) TO MAP...HOW IS POSSIBLE ?CAN ANY ONE SUGGEST?

3494

Which method is used for setting security in applets?

1095

Which command from the jdk compiles a java program?

1010

What is a condition in java?

1027

What is dao and pojo?

413

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