refactor: FileUtilities.listFiles() -> tryListFiles()

refactor: IReadPathOperations.listFiles() -> tryListFiles()

SVN: 1818

common/source/java/ch/systemsx/cisd/common/utilities/DirectoryScanningTimerTask.java

@@ -175,7 +175,7 @@ public final class DirectoryScanningTimerTask extends TimerTask implements ISelf
         boolean logErrors = (errorReadingDirectory == false);
         final ISimpleLogger errorLogger = logErrors ? createSimpleErrorLogger() : null;
 
-        File[] paths = FileUtilities.listFiles(sourceDirectory, filter, errorLogger);
+        File[] paths = FileUtilities.tryListFiles(sourceDirectory, filter, errorLogger);
         errorReadingDirectory = (paths == null); // Avoid mailbox flooding.
         return paths;
     }

common/source/java/ch/systemsx/cisd/common/utilities/FileUtilities.java

@@ -537,7 +537,7 @@ public final class FileUtilities
      * @return all files in <var>directory</var> that match the filter, or <code>null</code>, if <var>directory</var>
      *         does not exist or is not a directory.
      */
-    public static File[] listFiles(File directory, FileFilter filter, ISimpleLogger loggerOrNull)
+    public static File[] tryListFiles(File directory, FileFilter filter, ISimpleLogger loggerOrNull)
     {
         File[] paths = null;
         RuntimeException ex = null;