Why is string immutable in java?
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Can a thread be a member of another thread?
What is the difference between system.out ,system.err and system.in?
what is DGC?
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...
What is aop(assepct oriented programing)?
Explain what is synchronization?
Why a client should be multithreading? Explain.
What is bean? Where can it be used?
Is jvm a overhead?
difference between sql exception class and sql warning class
What event results from the clicking of a button?
What is a modular application? What does module-relative mean?