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Most Common J2EE Interview Questions & Answers by "GATE-2014" a.ritu86

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1 Most Common J2EE Interview Questions & Answers

Fri Nov 15, 2013 8:03 pm (PST) . Posted by:

"GATE-2014" a.ritu86

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MOST COMMON INTERVIEW QUESTIONS

Download Free Interview Questions eBook of 500 Questions

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Most Common Interview Questions
* Is java a fully object oriented programming or not? if not why?
http://www.coolinterview.com/interview/58678/

* Why java does not support Multiple Inheritance?
http://www.coolinterview.com/interview/58679/

* What is Java virtual machine ?
http://www.coolinterview.com/interview/58680/

* What gives java it's "write once and run anywhere" nature?
http://www.coolinterview.com/interview/58681/

* What is J2EE and what are the features of it?
http://www.coolinterview.com/interview/58682/

* What is similarities between an Abstract class and Interface?
http://www.coolinterview.com/interview/58689/

* What are the advantages of using exception handling?
http://www.coolinterview.com/interview/58690/

* What is meant by polymorphism in java? How can we achieve polymorphism? Explain with an example.
http://www.coolinterview.com/interview/58783/

* What do you understand by Synchronization?
http://www.coolinterview.com/interview/58784/

* Difference between local, member and a class variable?
http://www.coolinterview.com/interview/58785/

* Explain, in details, working of Java Virtual Machine(JVM).
http://www.coolinterview.com/interview/58786/

* What's the difference between an interface and an abstract class?
http://www.coolinterview.com/interview/60323/

* When to use abstract class or interface?
http://www.coolinterview.com/interview/60324/

* What does the Serializable interface do ?
http://www.coolinterview.com/interview/60325/

* How you can force the garbage collection ?
http://www.coolinterview.com/interview/60326/

* What is Synchronization in Java?
http://www.coolinterview.com/interview/60327/

* What is memory leak?
http://www.coolinterview.com/interview/60328/

* What is difference between stringbuffer and stringbuilder?
http://www.coolinterview.com/interview/60329/

* What is the difference between checked and unchecked exceptions?
http://www.coolinterview.com/interview/60330/

* How does Java allocate stack and heap memory?
http://www.coolinterview.com/interview/60331/

* What is Java Reflection?
http://www.coolinterview.com/interview/60332/

* What is a transient variable?
http://www.coolinterview.com/interview/60333/

* Which containers use a border Layout as their default layout?
http://www.coolinterview.com/interview/60334/

* Why do threads block on I/O?
http://www.coolinterview.com/interview/60335/

* How are Observer and Observable used?
http://www.coolinterview.com/interview/60336/

* What is synchronization and why is it important?
http://www.coolinterview.com/interview/60337/

* an a lock be acquired on a class?
http://www.coolinterview.com/interview/60338/

* What's new with the stop (), suspend () and resume () methods in JDK 1.2?
http://www.coolinterview.com/interview/60339/

* What is the preferred size of a component?
http://www.coolinterview.com/interview/60340/

* What method is used to specify a container's layout?
http://www.coolinterview.com/interview/60341/

* What is the Collections API?
http://www.coolinterview.com/interview/60342/

* Which characters may be used as the second character of an identifier, but not as the first character of an identifier?
http://www.coolinterview.com/interview/60343/

* How does Java handle integer overflows and underflow?
http://www.coolinterview.com/interview/60344/

* What modifiers may be used with an inner class that is a member of an outer class?
http://www.coolinterview.com/interview/60345/

* What is the difference between the >> and >>> operators?
http://www.coolinterview.com/interview/60346/

* Way java is platform independent ?
http://www.coolinterview.com/interview/60347/

* What if the main method is declared as private?
http://www.coolinterview.com/interview/60348/

* What is the purpose of garbage collection in Java ?
http://www.coolinterview.com/interview/60349/

* What are statements in JAVA ?
http://www.coolinterview.com/interview/60350/

* what is difference between instance and object.?
http://www.coolinterview.com/interview/60351/

* What is JNI?
http://www.coolinterview.com/interview/60352/

* What is the meaning of supplying string[] args to main method?
http://www.coolinterview.com/interview/60353/

* What is serialization?
http://www.coolinterview.com/interview/60354/

* In how many ways we can create an object? Explain with example.
http://www.coolinterview.com/interview/60355/

* Is synchronised a modifier?indentifier??what is it ?
http://www.coolinterview.com/interview/60356/

* Can you define an Iterator?
http://www.coolinterview.com/interview/60357/

* Question: Can you say what is the reason for garbage collection in Java, and in which situation is it used?
http://www.coolinterview.com/interview/60358/

* Can you identify the 1st argument of the String array in main method?
http://www.coolinterview.com/interview/60359/

* Question: Do you know what is the catch or declare rule for method declarations?
http://www.coolinterview.com/interview/60360/

* Can you name the main difference between preemptive scheduling and time slicing?
http://www.coolinterview.com/interview/60361/

* Can you define runtime exceptions?
http://www.coolinterview.com/interview/60362/

* Can you say what is the difference between defining the variable and declaring the variable?
http://www.coolinterview.com/interview/60363/

* Can you explain various ways of using thread in Java?
http://www.coolinterview.com/interview/60364/

* Can you define Overriding?
http://www.coolinterview.com/interview/60365/

* Are objects in Java passed by the value or by the reference?
http://www.coolinterview.com/interview/60366/

* What will be the default value of local variables?
http://www.coolinterview.com/interview/60367/

* What is synchronization in Java and why it is essential?
http://www.coolinterview.com/interview/60368/

* What is the difference between procedural and object-oriented programs?
http://www.coolinterview.com/interview/60369/

* What are Encapsulation, Inheritance and Polymorphism?
http://www.coolinterview.com/interview/60370/

* What are methods and how are they defined?
http://www.coolinterview.com/interview/60371/

* How many ways can an argument be passed to a subroutine and explain them?
http://www.coolinterview.com/interview/60372/

* What is final, finalize() and finally?
http://www.coolinterview.com/interview/60373/

* What is difference between overloading and overriding?
http://www.coolinterview.com/interview/60374/

* What is interface and its use?
http://www.coolinterview.com/interview/60375/