src/java.base/share/classes/jdk/internal/module/Resources.java

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

@@ -76,11 +76,11 @@
      */
     public static String toResourceName(Path dir, Path file) {
         String s = dir.relativize(file)
                       .toString()
                       .replace(File.separatorChar, '/');
-        if (s.length() > 0 && Files.isDirectory(file))
+        if (!s.isEmpty() && Files.isDirectory(file))
             s += "/";
         return s;
     }
 
     /**