modules/graphics/src/main/java/com/sun/javafx/font/PrismFontFile.java

@@ -1216,6 +1216,22 @@
             buffer.get(0, table, 0, buffer.capacity());
         }
         return table;
     }
 
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (!(obj instanceof PrismFontFile)) {
+            return false;
+        }
+        final PrismFontFile other = (PrismFontFile)obj;
+        return filename.equals(other.filename);
+    }
+
+    @Override
+    public int hashCode() {
+        return filename.hashCode();
+    }
 }