Java archive files (JARs) let you import pre-coded libraries into your Android applications. JARs save time, because you can use the Java functions without writing your own code for certain processes.

A Java Archive, or JAR file, contains all of the various components that make up a self-contained, executable Java application, deployable Java applet or, most commonly, a Java library to which any ...

I know there's no practical purpose to this it's entirely theoretical. and I know a jar file uses the zip format. But how does one create a jar file without a manifest file. (I don't mean creating a ...