What is null mean in java?
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As a developer what steps do you take to improve the performance?
Can you make a constructor final in Java?
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How hashmap increases its size in java?
Hi Friends, I am beginner in java. what i know about synchonized keyword is,If more that one 1 thread tries to access a particular resource we can lock the method using synchronized keyword. Then after that how the lock is released and how next thread access that.Please explain with example.
Explain wait(), notify() and notifyall() methods of object class ?
What is finalize()? Is finalize() similar to a destructor?
What is Java Shutdown Hook?
Can variables be used in java without initialization?
What are the differences between graph and tree?
What are the rules for variable declaration?
How does multithreading take place on a computer with a single cpu?
What are the differences between wait() and sleep()?