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What are the popular interview questions on Java Collections topic?

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what is difference between List and Set? What is difeerence between Vector and ArrayList ? What is Collection and Collection Framwork? What are the Cursor in Java? why HashMap is required in the program ?
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There are lots of questions and also it is depends up on your experience in work? Here I am providing ,questions which i came across during my interview. How to create custom key in HashMap? How HashMap working internally? How to remove duplicate in list? And all differnces question like, list vs...
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There are lots of questions and also it is depends up on your experience in work? Here I am providing ,questions which i came across during my interview. How to create custom key in HashMap? How HashMap working internally? How to remove duplicate in list? And all differnces question like, list vs set? ArrayList vs LinkedList? Vector vs ArrayList? Collection vs Collections? HashMap vs LinkedHashMap vs TreeMap? HashMAp vs ConcurrentHashMap? Why Map not implements Collection interface? What is bucket? read less
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There are 100 of questions. You can check on internet.
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