Why is the data type in java not an object?

Question

I studied information about the java data type very early and found that they are primitive types. Since java is object oriented, but its data types are not. why is that so?

Answer 1

It is more efficient to deal with primitive types than to make each variable a full-fledged object. The most common types (i.e., Int, char, float, etc.) are simple primitives. The remaining objects.

Answer 2

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Answer 3

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Answer 4

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In short, the penalty is either that OO numeric types (etc.) are slow and use more memory, that equivalent primitive Java types, or with which they are associated with restrictions that limit your ability to use OO type types.

Answer 5

Performance and memory consumption are a good reason for primitive data types instead of using full-fledged objects.