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

Java FileChannel.size() is a method in the Java FileChannel class that returns the size of the file, in bytes. It provides an efficient way to determine the length of the file when working with file I/O. Introduced in Java 2007 with Java 7, size() is commonly used to perform file handling operations like determining the end of the file, reading file metadata, or dynamically allocating memory for file processing.

https://docs.oracle.com/javase/8/docs/api/java/nio/channels/FileChannel.html