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

Java StringBuilder is a class used to create mutable sequences of characters. Unlike Java String, which is immutable, Java StringBuilder allows for efficient string manipulation by modifying the string in place. This is particularly useful when performing a series of string concatenations, as it reduces the overhead of creating multiple string objects. Introduced in Java 1997 with Java 1.1, StringBuilder is commonly used for performance-sensitive applications, such as string formatting and building complex strings dynamically.

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