src/java.base/share/classes/sun/nio/fs/AbstractFileSystemProvider.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

*** 71,81 ****
                                     Object value,
                                     LinkOption... options)
          throws IOException
      {
          String[] s = split(attribute);
!         if (s[0].length() == 0)
              throw new IllegalArgumentException(attribute);
          DynamicFileAttributeView view = getFileAttributeView(file, s[0], options);
          if (view == null)
              throw new UnsupportedOperationException("View '" + s[0] + "' not available");
          view.setAttribute(s[1], value);
--- 71,81 ----
                                     Object value,
                                     LinkOption... options)
          throws IOException
      {
          String[] s = split(attribute);
!         if (s[0].isEmpty())
              throw new IllegalArgumentException(attribute);
          DynamicFileAttributeView view = getFileAttributeView(file, s[0], options);
          if (view == null)
              throw new UnsupportedOperationException("View '" + s[0] + "' not available");
          view.setAttribute(s[1], value);
*** 84,94 ****
      @Override
      public final Map<String,Object> readAttributes(Path file, String attributes, LinkOption... options)
          throws IOException
      {
          String[] s = split(attributes);
!         if (s[0].length() == 0)
              throw new IllegalArgumentException(attributes);
          DynamicFileAttributeView view = getFileAttributeView(file, s[0], options);
          if (view == null)
              throw new UnsupportedOperationException("View '" + s[0] + "' not available");
          return view.readAttributes(s[1].split(","));
--- 84,94 ----
      @Override
      public final Map<String,Object> readAttributes(Path file, String attributes, LinkOption... options)
          throws IOException
      {
          String[] s = split(attributes);
!         if (s[0].isEmpty())
              throw new IllegalArgumentException(attributes);
          DynamicFileAttributeView view = getFileAttributeView(file, s[0], options);
          if (view == null)
              throw new UnsupportedOperationException("View '" + s[0] + "' not available");
          return view.readAttributes(s[1].split(","));