Which package is imported by default?
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Why do we need hashset in java?
Difference between interface and abstract class with ex.
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Explain reverse a linked list recursive java solution?
Why unicode is important?
What is a treeset class?
what is mean by overriding in which situation we wil use?
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what is the constructor and how many types of constructors are used in java?
Which keyword specify that a variable is effectively final ?
"We cannot create an object of interface but we can create a variable of it". Discuss the statement with the help of an example. (Plz help us to provide immediately.)
Write a program to create a binary Tree ?
What error occurs if a try-catch-finally statement sequence does not have a catch clause?
What is difference between identifier and variable?