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

Why is string builder not thread safe?

1057

What is the instance of an object?

1186

Is string a wrapper class?

1013

What is the generic function?

982

Is string an object?

1112

How do you replace all in word?

1060

How do you know if a value is nan?

1057

Does printwriter create a file?

955

How do you use wildcards?

1047

What is difference between string and stringbuffer?

1092

What are the special characters?

968

What does it mean that strings are immutable?

1126

What happens if a constructor is declared private?

1030

What are different types of expressions?

1113

Which is better arraylist or vector?

1020

Un-Answered Questions { Java J2EE }

Why is lazy initialized?

404

Explain about varargs in java?

1127

Can we instantiate interface in java?

1125

Explain the functionality of iiop ?

1151

What does three dots mean in java?

1123

What is a text string?

1073

What does it mean to be inverse?

375

What are the 5 steps of orm?

337

How to compare two strings in java program?

1047

Write a program to find the greatest of three numbers in java?

999

I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?

1099

What is incompatible types in java?

1031

What is jbutton in java?

901

What is thread pool? How can we create thread pool in java?

1063

Why do we need hibernate framework?

433

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