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

There are two classes named classa and classb. Both classes are in the same package. Can a private member of classa can be accessed by an object of classb?

1490

What is the base class in java from which all classes are derived?

979

Can we declare a class as abstract without having any abstract method?

999

Which of the following classes will have more memory allocated?

1017

Does importing a package imports its sub-packages as well in java?

969

How objects of a class are created if no constructor is defined in the class?

1070

Give an example of use of pointers in java class.

1031

I want to persist data of objects for later use. What is the best approach to do so?

1064

What is the purpose of static methods and static variables?

1071

What are java packages?

1033

What are the performance implications of interfaces over abstract classes?

1 3665

How can you generate random numbers in java?

1048

When a lot of changes are required in data, which one should be a preference to be used? String or stringbuffer?

1240

How can an exception be thrown manually by a programmer?

1003

How we can execute any code even before main method?

1140

Un-Answered Questions { Java J2EE }

Why we used vector class?

1069

Differences between traditional programming language and object oriented programming language?

1123

What is deployment descriptor?

982

What is hibernate caching?

349

How to know howmuch data is truncated?

2369

What is jdbctemplate in spring? And how to use it?

413

What advantage do java's layout managers provide over traditional windowing systems?

956

what is the difference between a threads start() and run() methods? : Java thread

1012

Explain about main thread in java?

1081

What is connector?

983

What is getkey () in java?

1010

What is the use of bufferedreader?

996

What are "class access modifiers" in Java?

1133

What are action errors?

993

Give steps to connect to the db using jdbc?

1017

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