Listing classes in a jar file
You can view the contents of a JAR file from command prompt by using the following command:
jar tf jar-file
For example:
jar tf TicTacToe.jar
META-INF/MANIFEST.MF
TicTacToe.class
audio/
audio/beep.au
audio/ding.au
audio/return.au
audio/yahoo1.au
audio/yahoo2.au
images/
images/cross.gif
images/not.gif
Have a look at the classes in the package java.util.jar
. You can find examples of how to list the files inside the JAR on the web, here's an example. (Also note the links at the bottom of that page, there are many more examples that show you how to work with JAR files).
Here is code for listing classes in jar:
import java.io.IOException;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
public class JarList {
public static void main(String args[]) throws IOException {
if (args.length > 0) {
JarFile jarFile = new JarFile(args[0]);
Enumeration allEntries = jarFile.entries();
while (allEntries.hasMoreElements()) {
JarEntry entry = (JarEntry) allEntries.nextElement();
String name = entry.getName();
System.out.println(name);
}
}
}
}