The File Class

• The File class defines methods and variables that provide access to the underlying file system in a machine-independent way.

• For example, there are methods getParent() and getPath(), as well as boolean methods isDirectory() and isFile(), plus many more.

• A very handy method is the list() method, which returns a string array of directory contents:

  • File dir = new File( "/tmp" );
  • if ( dir.exists() && dir.isDirectory() )
  • String directory[] = dir.list();

• Instances of class File may be used in lieu of filename strings in InputStream constructors.

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