https://DevOpsCloud.io -- Cloud Monk Losang Jinpa, Ph.D., MCSE/MCT, GitOps DevOps Engineer

Java HashMap.clear() is a method in the Java HashMap class that removes all entries from the map. It resets the map to an empty state, freeing up memory and resources. Introduced in Java 1995 with Java 1.2, clear() is commonly used when you need to reset or clear the map in applications, such as in caching or when processing large datasets.

https://docs.oracle.com/javase/8/docs/api/java/util/HashMap.html