Explain constructors and types of constructors in java.
A class can be a subclass of itself?
What is difference between path and classpath variables?
Explain hashset and its features?
What is string english?
What is difference between fail-fast and fail-safe?
Give example to differentiate between call by value and call by reference.
What is meant by Servelet? What are the parameters of service method?
What is singleton class?
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What is the difference between final, finally and finalize()?
What is string variable?
what is the purpose of class "Object" which is base class for all classes?
When the constructor of a class is invoked?