Explain wrapper classes in java?
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Explain enumeration in java?
What is meant by inheritance and what are its advantages?
What is the concatenation operator in java?
What is the maximum size of a string in java?
What is the difference between interface & abstract class?
What is a package?
What are the two main uses of volatile in Java?
What the difference is between execute, execute Query, execute Update?
What is the impact of declaring a method as final?
when to for abstract class and when to go for interface
What is polymorphism java example?
if am have 100 threads(for ex:T1,T2---T100) how we give priority to these threads and how the system excute these threads