src/java.desktop/share/classes/javax/imageio/plugins/tiff/TIFFField.java

@@ -259,11 +259,11 @@
  *
  * @since 9
  * @see   TIFFDirectory
  * @see   TIFFTag
  */
-public class TIFFField implements Cloneable {
+public final class TIFFField implements Cloneable {
 
     private static final String[] typeNames = {
         null,
         "Byte", "Ascii", "Short", "Long", "Rational",
         "SByte", "Undefined", "SShort", "SLong", "SRational",