PathUtil { public static String path( File file ) { if ( file == null ) { return null; } try { return file.getCanonicalPath(); } catch ( IOException e ) { return file.getAbsolutePath(); } } private  PathUtil(); static boolean existAll( File... files ); static boolean existAll( List<String> paths ); static boolean existAny( File... files ); static File[] existingFiles( Collection<String> paths ); static File[] existingFiles( File... files ); static List<File> existingFilesList( Collection<String> paths ); static List<File> existingFilesList( List<File> files ); static File file( File file ); static File file( String path ); static File file( String path, File basedir ); static File file( String path, File... basedirs ); static File file( String path, List<File> basedirs ); static File file( String path, String basedir ); static String fileExtention( File file ); static File[] files( Collection<String> paths ); static Collection<File> files( List<String> paths, File basedir ); static File[] files( String... paths ); static Collection<File> files( String[] paths, File basedir ); static File[] files( String[] paths, List<File> basedirs ); static List<File> filesList( Collection<String> paths ); static String path( File file ); static String[] paths( Collection<File> files ); static String[] paths( File... files ); static List<String> pathsList( File[] files ); static List<String> pathsList( List<File> files ); static String pathString( File[] files ); static String relativePath( File home, File f );  }
@Test public void testGetPath() throws IOException { assertThat( PathUtil.path( null ), nullValue() ); assertThat( PathUtil.path( f1 ), equalTo( _PATH ) ); assertThat( PathUtil.path( f2 ), equalTo( ABSOLUTE_PATH ) ); }