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

Java ArrayList.set() is a method in the Java ArrayList class that replaces the element at the specified index with the specified element. If the index is valid, the old value at that index is replaced, and the size of the list remains unchanged. Introduced in Java 1995 with Java 1.2, set() is used for updating elements in a dynamic list, and is crucial for modifying existing list data efficiently.

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