Difference between Arrays and Collections?

Arrays:

•  They are fixed in size.
• With respect to memory arrays are not preferable
• Arrays shows very good Performance
• Can hold only Homogeneous data elements.
• Arrays can hold both primitive data types and objects
• They doesnot have any underlying datastructures.

Collections:

• Growable in nature.
• With respect to memory collections are recommended.
• It shows poor Performance.
• Can hold both homogeneous and Heterogeneous .
• They have underlying datastructure.
• Collections hold only Objects.

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