AP® Computer Science A glossary
Autoboxing
Course: AP® Computer Science A Shows up in: Unit 4: Data Collections
The automatic conversion the compiler makes from a primitive value to its wrapper class object, such as int to Integer or double to Double.
Appears in the course and exam description (CED): 4.7.A.2
It happens when a primitive value is assigned to a variable of the wrapper class, or passed to a parameter of that wrapper class, such as list.add(5) on an ArrayList<Integer>.
Integer goals = 3;
ArrayList<Integer> list = new ArrayList<Integer>();
list.add(goals + 1);
System.out.println(list);Output:
[4]