Java FileInputStream is a class used to read raw byte data from a file. It provides methods like Java read() to read bytes from the file one at a time or in bulk. FileInputStream is part of Java's java.io package and is primarily used when dealing with binary files, such as images or audio. Introduced in Java 1995 with Java 1.0, FileInputStream is essential for performing low-level file I/O operations in Java.

https://docs.oracle.com/javase/8/docs/api/java/io/FileInputStream.html