| AbstractJarURLConnection | A URL Connection to a Java ARchive (JAR) file or an entry in a JAR file. | 
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| FileChangedChecker | This class is used to check for file modifications of the file time stamp and/or the file size. | 
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| GZOutputStream | Modified version of Java's GZIPOutputStream to perform BEST compression! | 
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| IniFile | Loads and handles retrieval of data in a file such as SERVER.INI with [sections] and "item=data". | 
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| JarClassLoader | This class handles one Jar or several Jar file(s) (already loaded), typically XJarFile or MemoryJarFile's. | 
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| JarFilePath | Class holding an IJarFile and a path inside the Jar file for the JarClassLoader. | 
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| MemoryJarFile | Extends the normal Jar file for processing files with various character case, and mixture of forward and backslashes. | 
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| WindowsLikeFilenameFilter | Filters file names like under Windows, with '?' being any character, '*' being any characters and '^' the escape character (the meaning of '?' and '*' becomes the actual character, and two escape characters for a single). | 
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| WinFileFilter | A convenience implementation of FileFilter that filters out all files except for those type extensions that it knows about. | 
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| XFile | This class is used for opening and reading files that are stored in OEM ASCII or Ansi character set. | 
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| XJarFile | Extends the normal JAR file for processing files with various character case, and mixture of forward and backslashes. | 
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| XOutputFile | This class is used for creating and writing to files that are stored using Phantom Hurricane in OEM ASCII or Ansi character set. | 
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