Explain about instanceof operator in java?
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adapter class ?
Why to use nested classes in java? (Or) what is the purpose of nested class in java?
what is the reason behind non static method cannot be referenced from a static Context?
What is collection sort in java?
What is design pattern and there types?
does java support default argument in Method?
why java uses class level type casting ?
Can we serialize arraylist in java?
What are anonymous inner classes?
Why synchronization is important?
Explain what pure virtual function is?
What is return keyword in java?