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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