What is the purpose of nested class in java?
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Differentiate between a class and an object.
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What is object english?
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adapter class ?
What does .equals do in java?
What is java console application?
Why do we need singleton?
How to perform selection sort in java?
What is java instanceof operator?
Explain the usage of this with constructors?
There are 100 keys and values in HashMap.how to get the keys and values?