Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java J2EE Interview Questions

Questions Answers Views Company eMail

Which package has light weight components?

1021

What is the primary benefit of encapsulation?

1104

Java.util.regex consists of which classes?

1008

What do you mean by object?

994

According to java operator precedence, which operator is considered to be with highest precedence?

1106

What do you know about java?

977

What do you mean by access modifier?

1052

What are the data types supported by java? What is autoboxing and unboxing?

1035

What does the “static” keyword mean? Can you override private or static method in java?

1108

What is structure of java heap? What is perm gen space in heap?

1140

What is function overriding and overloading in java?

1129

What is the difference between a synchronized method and a synchronized block?

1083

Why collection doesn’t extend cloneable and serializable interfaces?

1121

Explain different ways of creating a thread?

1085

What differences exist between iterator and listiterator?

1057

Un-Answered Questions { Java J2EE }

Why is java robust?

1262

What is ejb framework?

1101

Can we write any code after throw statement?

1068

Explain jdk, jre and jvm?

985

Describe how the jdbc application works.

1046

Difference between abstract and concrete class ?

1194

List out five keywords related to exception handling ?

1031

What is thread pool in java with example?

1022

What is used to display the intermediate result in an interceptor?

975

What are various types of class loaders used by jvm?

1013

How hibernate sessions work?

401

Why would you use dependency injection?

407

What is jpa and spring data jpa?

430

What is session in hibernate?

412

Explain about the security features present in WAS?

851

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