Shallow size와 Retained size [Shallow and Retainged Heap]

Shallow size of an object is the amount of memory allocated to store the object itself, not taking into account the referenced objects. Shallow size of a regular (non-array) object depends on the number and types of its fields.

Shallow size of an array depends on the array length and the type of its elements (objects, primitive types). Shallow size of a set of objects represents the sum of shallow sizes of all objects in the set.

객체의 Shallow 크기라는 것은 객체 자체가 저장되는 메모리의 양을 말하며, 참조되는 객체가 포함되지 않은다. 배열...