Java Collections Framework

• I just read a article about wastage of Collections.
• Every time in our Google search we always try to find how to create a ArrayList, Hashmap, TreeMap and etc.
• But it is rare that we search for how not to create one. So Whenever creating array it is must you should declare the size of the collections.
• Because empty collections in underlying structure ( empty arrays) will be created and it will hit your application performance a lot.
• The point her it is that you must declare the size of the collection to avoid collection wastage's.

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