src/java.base/share/classes/sun/net/www/MimeTable.java

@@ -118,11 +118,11 @@
     }
 
     public synchronized void add(MimeEntry m) {
         entries.put(m.getType(), m);
 
-        String exts[] = m.getExtensions();
+        String[] exts = m.getExtensions();
         if (exts == null) {
             return;
         }
 
         for (int i = 0; i < exts.length; i++) {