Use GetResources

public class Test {

    public static void main(String[] args) throws Exception{

        ClassLoader classLoader = Test.class.getClassLoader();
        // can only search for characters in jar bags, such as folders ORG, COM, file name A.XML
        Enumeration<URL> paths  = classLoader.getResources("META-INF");
        int count = 0;
        while (paths.hasMoreElements()){
            String path = paths.nextElement().toString();
            if (path.indexOf("jdk") == -1){
                count++;
                System.out.println(path);
            }
        }
        System.out.println(count);
    }
}