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

Java CharSequence is an interface that represents a sequence of characters. It is implemented by several classes, including Java String, Java StringBuilder, and Java StringBuffer. CharSequence provides methods to get the length of the sequence, to retrieve characters by index, and to convert the sequence into a string. Introduced in Java 1995 with Java 1.0, CharSequence is a key interface in Java for handling text and string-based operations in a flexible, efficient manner.

https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html