static JarURLConnection get(URL url, JarFile jarFile) throws IOException { StringSequence spec = new StringSequence(url.getFile()); int index = indexOfRootSpec(spec, jarFile.getPathFromRoot()); if (index == -1) { return (Boolean.TRUE.equals(useFastExceptions.get()) ? NOT_FOUND_CONNECTION : new JarURLConnection(url, null, EMPTY_JAR_ENTRY_NAME)); } int separator; while ((separator = spec.indexOf(SEPARATOR, index)) > 0) { JarEntryName entryName = JarEntryName.get(spec.subSequence(index, separator)); JarEntry jarEntry = jarFile.getJarEntry(entryName.toCharSequence()); if (jarEntry == null) { return JarURLConnection.notFound(jarFile, entryName); } jarFile = jarFile.getNestedJarFile(jarEntry); index = separator + SEPARATOR.length(); } JarEntryName jarEntryName = JarEntryName.get(spec, index); if (Boolean.TRUE.equals(useFastExceptions.get()) && !jarEntryName.isEmpty() && !jarFile.containsEntry(jarEntryName.toString())) { return NOT_FOUND_CONNECTION; } return new JarURLConnection(url, jarFile, jarEntryName); }