Okio File Kache
· Kotlin Multiplatform implementation of a persistent cache that exposes Okio-based API in addition to string-based and Java's File-based APIs.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window file-kache-okio-linuxx64-2.0.0-rc02.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.