What are the Disadvantages of using Collection Classes over Arrays ?
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 Q1. What are the Disadvantages of using Collection Classes over Arrays ?Core Java
Ans. Collections can only hold objects, It can't hold primitive data types.

Collections have performance overheads as they deal with objects and offer dynamic memory expansion. This dynamic expansion could be a bigger overhead if the collection class needs consecutive memory location like Vectors.

Collections doesn't allow modification while traversal as it may lead to concurrentModificationException.

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