### Question:
ValidityTools { public static void checkAccessibilityOfDirs ( String ... args ) { for ( String name : args ) { File f = new File( name ); if ( f.canRead( ) && f.canWrite( ) && f.isDirectory( ) ) continue; else { logger.error( "The required directory : " + f.getAbsolutePath( ) + " is not accessible." ); System.exit( 1 ); } } }  static boolean isAccessibleSocket( String host , int port ); static boolean isAccessibleSocket( String host , int port, int timeOutInMSec ); static void checkAccessibilityOfDirs( String ... args ); static void checkAccessibilityOfFiles( String... args ); static void isDBAccessible( String driverClass , String url , String user , String password ); static String getHostName( String hostandport ); static int getPortNumber( String hostandport ); static boolean isLocalhost( String host ); static boolean isInt( String value ); static boolean isValidJavaVariable(CharSequence string); static final int SMTP_PORT; static final transient Logger logger; static final ArrayList < InetAddress > NETWORK_LOCAL_INETADDRESSES; }### Answer:
@Test public void testCheckAccessibilityOfDirs() { }