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

Java AbstractSet.containsAll() is a method in the Java AbstractSet class that checks if the set contains all elements of a specified collection. It returns true if all elements are present, otherwise false. Introduced in Java 1997 with Java 1.2, containsAll() is commonly used in set operations to verify subset relationships between collections.

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