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Java / Casting

What is auto widening and explicit narrowing in Java?

The data is implicitly casted from small sized primitive type to big sized primitive type. This is called auto-widening. i.e The data is automatically casted from byte to short, short to int, int to long, long to float and float to double..

You have to explicitly cast the data from big sized primitive type to small sized primitive type. i.e you have to explicitly convert the data from double to float, float to long, long to int, int to short and short to byte This is called explicit narrowing.

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