What is autoboxing in Java? Give an example.

Autoboxing is the automatic conversion by the Java compiler of a primitive data type into an object of its corresponding wrapper class, without the programmer writing any conversion code.

Example: Integer n = 25; Here the primitive int value 25 is automatically wrapped into an Integer object.

The key word is AUTOMATIC — boxing done explicitly, as in Integer n = Integer.valueOf(25);, is just boxing; autoboxing is when Java does it silently because the context requires an object. The reverse process is auto-unboxing: int m = n; where the Integer object is unwrapped back into a primitive. Always give the one-line example — a definition alone rarely earns both marks.