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 hash code collision?

1067

What do you mean by order of precedence and associativity?

965

What is the common usage of serialization? What exceptions occur during serialization?

1145

Which way a developer should use for creating thread, i.e. Sub classing thread or implementing runnable.

943

What are the different ways of creating thread?

1028

What will happen if non-synchronized method calls a static synchronized method and what kind of lock it acquires?

1129

What is the use of volatile in java?

1072

Mention the default values of all the elements of an array defined as an instance variable.

1000

What are the steps in the jdbc connection?

1053

Why singleton pattern is better than creating singleton class with static instance?

1009

Write a code to create a trigger to call a stored procedure

998

What is the difference between preparedstatement and statement in java?

1180

What is the difference between synchronized and synchronized block?

1079

What is the use of join method?

1048

What do you understand by weak reference?

1025

Un-Answered Questions { Java J2EE }

What is JDBC Driver interface?

1138

What do you understand by @qualifier annotation?

451

What is ordered map in java?

1030

Which data type is a class in java?

1020

How to write named query in hibernate?

458

Is uri the same as url?

912

Explain the features of interfaces in java?

994

extending thread class or implementing runnable interface. Which is better? : Java thread

1010

how can u integrate ejb and hibernate? How can u call hibernateDAO methods in session bean?

2996

Are arrays classes in java?

1050

What is a void in java?

1187

When do we use synchronized methods in java?

1063

What is the use of :: in java?

1033

Which came first jpa or hibernate?

364

What is int lol?

1154

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