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

What is a treeset class?

1026

Can you explain the meaning of aggregation and composition

1026

What are the actions that can occur when a thread enters blocked state?

1073

What is garbage collector?

1099

Can we force the garbage collection to run?

971

why doesn't java run on all platforms?

1044

Can you tell me range of byte?

1003

Explain the use of javap tool.

1154

Difference between arraylist and vector.

1142

What is the difference between multiple processes and multiple threads?

1224

Explain the difference between abstraction and encapsulation.

994

What do you understand by synchronization?

1065

Define locale.

1045

How to create an immutable class?

1126

Explain the importance of finalize() method.

981

Un-Answered Questions { Java J2EE }

Is java call by reference?

990

BIG-O NOTATIONS

145

How many types of logs are there?

1071

What is the exact difference in between Unicast and Multicast object?

2144

What is private public protected in java?

1048

What are the different types of interfaces present in hibernate?

379

What is synchronization and why is it important?

1139

Is java call by value?

1105

What is meant by memory leak?

1097

How is it possible in java programming for two string objects with identical values not to be equal under the == operator?

1036

Explain garbage collection in java?

993

What is lazy code?

402

what is difference between equals and ==?

1079

What is the purpose of using bufferedinputstream and bufferedoutputstream classes?

1087

What is a pointcut?

397

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