### Question:
UtilFolder { public static String getPath(String... path) { return getPathSeparator(Constant.SLASH, path); } private  UtilFolder(); static List<File> getDirectories(File path); static String getPath(String... path); static String getPathSeparator(String separator, String... path); static void deleteDirectory(File element); static boolean isDirectory(String path);  }### Answer:
@Test void testGetPath() { assertEquals("a" + Constant.SLASH + "b" + Constant.SLASH + "c", UtilFolder.getPath("a", "b", "c")); }