What is binary search in java?
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What are the access modifiers in java?
What is Map interface?
What is the final class?
where do we use init()
What is a functional interface?
What is the benefit of inner / nested classes ?
What is the abstract class?
What are the six ways to use this keyword?
What is map and hashmap in java?
what is difference between equals and ==?
Is java a virus?
how can you retrive information from database by using hashmap/arraylist ,plz explain with example briefly?