Java: Map Interface and HashMap Question When to Use a Map Instead of a List? (Click to reveal answer) Answer Use a Map when key-based access is needed. A Map is more suitable than a List when you need to access elements based on unique keys, such as customer IDs in an e-commerce application, rather than their order or index. Additional NotesWhen to Use a Map Instead of a List? Track: Java Topic: Collections Focus: Map Interface and HashMap Topics: Collections Java Map Interface and HashMap