Java tutorial
import java.io.IOException; import java.util.Enumeration; import java.util.jar.Attributes; import java.util.jar.JarEntry; import java.util.jar.JarFile; public class Main { public static void main(String[] args) throws IOException { JarFile jf = new JarFile(args[0]); Enumeration e = jf.entries(); while (e.hasMoreElements()) { JarEntry je = (JarEntry) e.nextElement(); String name = je.getName(); Attributes a = je.getAttributes(); if (a != null) { Object[] nameValuePairs = a.entrySet().toArray(); for (int j = 0; j < nameValuePairs.length; j++) { System.out.println(nameValuePairs[j]); } } } } }