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

Java StringBuffer is a class that provides a mutable sequence of characters. It is similar to Java String, but unlike strings, StringBuffer can be modified after it is created. It is commonly used in applications that require frequent string concatenation or manipulation. Introduced in Java 1997 with Java 1.1, StringBuffer is part of Java's java.lang package and is more efficient than Java String for repeated modifications due to its mutable nature.

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