| Class | Description | 
|---|---|
| BasicExceptionDialog | A dialog that displays some basic information about an exception | 
| ClasspathMatcher | |
| ClasspathMatcher.ClasspathMatchers | |
| FileUtils | This class contains a few file-related utility functions. | 
| HttpUtils | |
| JarFile | A wrapper over  JarFilethat verifies zip headers to
 protect against GIFAR attacks. | 
| MD5SumWatcher | |
| PropertiesFile | A properties object backed by a specified file without throwing
 exceptions. | 
| ScreenFinder | |
| StreamUtils | |
| TimedHashMap<K,V> | Simple utility class that extends HashMap by adding an expiry to the entries. | 
| UrlUtils | |
| WeakList<E> | This list stores objects automatically using weak references. | 
| XDesktopEntry | This class builds a (freedesktop.org) desktop entry out of a  JNLPFile. | 
| Enum | Description | 
|---|---|
| FileUtils.OpenFileResult | Indicates whether a file was successfully opened. | 
| ImageResources | 
| Exception | Description | 
|---|---|
| InvalidJarHeaderException | Thrown from net.sourceforge.jnlp.utilJArFile when verification of headers fails |