vcard-androidParser
· "vcard-androidParser" is an android library for developers who need to process contacts backup files or simple vcard or vcf files. This library is android mapping of ez-vcard
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 vcard-androidParser-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.