How hashmap works in java?
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Is the empty set a singleton?
can we access the super class method using subclass object?
Is boolean a wrapper class in java?
What is the common usage of serialization?
Can a class extends itself in java?
What is the difference between double and float variables in java?
List any five features of java?
What invokes a thread's run() method in java programming?
What is an object-oriented paradigm?
What is the use of java?
When do we use synchronized blocks and advantages of using synchronized blocks?
What is factor r?