With Filestar you get 31 different skills for working productively with Java Archive File (.jar) files.
About .Jar
Name
Java Archive File
Extension
.jar
Format
Binary
Category
Developer
Developer
Oracle
Description
A JAR file is a Java archive (JAR) file used by the Java Runtime Environment (JRE), a framework used for executing Java programs. JAR files may serve as program libraries or as standalone programs that run if the JRE is installed on the computer or mobile device.