Difference Between Map.clear() and Instantiating a New Map

Date: 2023-08-25

This tutorial compares Java's Map.clear() method and creating a new Map instance. clear() removes all key-value pairs from an existing map, resetting it to empty without creating a new object. Creating a new Map instance using new generates a completely separate map object. The choice depends on the use case: clear() is efficient for reusing an existing map, while new provides a clean slate for distinct data sets. Consider memory usage and thread safety when choosing the best approach.

Read more: https://examples.javacodegeeks.com/java-map-clear-vs-new/