No need for creating Short objects explicitly?

Question

Following code works perfect and adds 1 and 2 values to the list, but why? Why you don't need to create Short objects explicitly? e.g: list.add(new Short(1));

List<Short> list = new ArrayList();
list.add((short)1);
list.add((short)2);
System.out.println(list);

Answer 1

This is called autoboxing. It is a feature that automatically converts primitives to their corresponding object type. It is present since Java 1.5.

The opposite of autoboxing is called autounboxing but beware of NullPointerException