Java / Data types

What is Autoboxing and Unboxing?

Autoboxing refers to the automatic conversion of primitive types to its corresponding object wrapper classes.

For example, converting an int to an Integer, a double to a Double etc.

This automatic conversion is accomplished by the compiler.

Character ch = 'c';// char autoboxed to its wrapper class.

Float fl = 2.5f;  //float converted to Float object.

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System.out.println(1.0/0);

How primitive variables passed to methods - by value or by reference?

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