Difference between arraylist and hashset in java?
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What is empty string literal in java?
What is the final method?
what are the methods in object?
I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?
Why are parameters used in functions?
What data type is a string?
What are the differences between heap and stack memory in java?
what is mean by overriding in which situation we wil use?
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Why multiple inheritance is not supported by java?
Break statement can be used as labels in java?
What is thread synchronization in java?
Can a class be declared as protected?