What is the inheritance order of the following classes: List, Set, Collection, and Map?

In Java, the Collection interface is the base for most collections. The inheritance hierarchy is as follows:

• Collection — the basic interface for groups of objects.
• List and Set — both extend Collection.
• Map does not inherit from Collection; it is a separate interface for key-value mappings.

The hierarchy looks like this:

Collection
├── List
└── Set

Map (separate interface)

Thus, List and Set are subtypes of Collection, while Map is a separate data structure with its own interface.