What are the design considerations while making a choice between using interface and abstract class?

0 Answers  

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What is a compilation unit?

1 Answers  

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Can we have more than one action servlet?

7 Answers   HP,

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What is the lifecycle of an applet?

2 Answers  

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Can I import same package/class twice? Will the jvm load the package twice at runtime?

0 Answers  

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When a thread blocks on i/o, what state does it enter?

0 Answers  

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How do you maintain a stateful session object across the session

2 Answers   HCL,

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Name the method to find, if a thread is active or not?

2 Answers  

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Hi frnds ,iam new to java and j2ee ,my requirement is using java or any j2eetech how to lock an user when he enter wrong credentials(uname&password) more than 3 times.take the username and passowrd in a bean no need to conned Db kindly provide me sample application code or and ideas or links or tutorials plzzzzz urgent for me thanks in advance...

2 Answers   NSN,

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does j2ee means advanced java

10 Answers  

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What are the methods used for inter-thread communication? and in what class these methods are defined?

2 Answers  

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what are design patterns in java?give with example?

2 Answers   HCL, iGate,

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