What is busy spin, and why should you use it?
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What is the difference between final, finally and finalize()?
What is executor memory?
How to retrieve data from database in java using arraylist?
Can bool be null?
What is the maximum size of array in java?
What is an arraylist in java?
What is a final class in java?
how to handle exceptions in core applications?
What does s mean in regex?
What is the generic class?
How GC (Garbage Collector) knows the objects reference is unused.Whether GC removes the unused object Parmanently or it maintains something.
can we take more than one null values for Unique constraints.