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

Java Hashtable is a class that implements a hash table-based Java Map to store key-value pairs. It is similar to Java HashMap, but it is synchronized, which makes it thread-safe but less performant compared to Java HashMap. Introduced in Java 1995 with Java 1.0, Hashtable was commonly used in earlier Java programs for managing collections of data, although HashMap is now more widely used in most modern Java applications due to better performance and flexibility.

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