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Java J2EE Interview Questions
Questions Answers Views Company eMail

Explain the differences between abstraction and encapsulation?

 1065

What is autoboxing and unboxing?

 1030

What is the importance of finally block in exception handling?

 1050

What is the difference between exception and error in java?

 1035

Can you override private or static method in java?

 995

What is comparable and comparator interface? List their differences

 1117

How does thread synchronization occurs inside a monitor? What levels of synchronization can you apply?

 975

Why is java called the platform independent programming language?

 1026

What are the data types supported by java?

 1042

What does system.gc() and runtime.gc() methods do?

 1071

How do you ensure that n threads can access n resources without deadlock?

 1327

When is the finalize() called? What is the purpose of finalization?

 1101

If an object reference is set to null, will the garbage collector immediately free the memory held by that object?

 1170

Does garbage collection occur in permanent generation space in jvm?

 1102

What is a constructor, constructor overloading in java?

 1007

Un-Answered Questions { Java J2EE }

How do the wls jms 6.1 server/destination message maximum and threshold values work? : BEA Weblogic

1034

What is overriding in java?

1087

What is a string what operation can be performed out with the help of a string?

1064

Which non-unicode letter characters may be used as the first character of an identifier?

1018

Tell me about security in weblogic?

1040

Who is responsible for writing a constructor?

1276

Differentiate between run time error and syntax error.

1153

What is j2ee explain the component of j2ee application?

862

Explain the importance of throwable class and its methods?

1059

What does sprintf mean?

962

Why we use hibernate?

365

Which library is provided by struts for form elements like check boxes, text boxes etc?

943

Is double bigger than float?

1007

What is spring jpa repository?

423

Is activemq a jms provider?

834

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