code: private ClassLoader createClassLoader(File warFile, File tempDirectory) {
          try {
  
              File condiLibDirectory = new File(tempDirectory, "condi");
              condiLibDirectory.mkdirs();
              File jettyWebappDirectory = new File(tempDirectory, "webapp");
              jettyWebappDirectory.mkdirs();
  
  
              List<URL> urls = new ArrayList<>();
  
              JarInputStream in = new JarInputStream(new FileInputStream(warFile));
  
              while(true) {
                  JarEntry entry = in.getNextJarEntry();
                  if(entry == null) {
                      break;
                  }
                  String name = entry.getName();
                  String prefix = "META-INF/jettyconsole/lib/";
                  if(!entry.isDirectory()) {
                      if( name.startsWith(prefix) ) {
                          String simpleName = name.substring(name.lastIndexOf("/")+1);
                          File file = new File(condiLibDirectory, simpleName);
                          unpackFile(in, file);
                          urls.add(file.toURI().toURL());
                      } else if(!name.startsWith("META-INF/jettyconsole")
                              && !name.contains("JettyConsoleBootstrapMainClass")) {
                          File file = new File(jettyWebappDirectory, name);
                          file.getParentFile().mkdirs();
                          unpackFile(in, file);
                      }
                  }
              }
              in.close();
              return new URLClassLoader(urls.toArray(new URL[urls.size()]), JettyConsoleBootstrapMainClass.class.getClassLoader());
  
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
docs: Create a URL class loader containing all jar files in the given directory
  
  @param warFile the war file to look for libs dirs in
  @return