--- old/src/java.desktop/share/classes/sun/awt/FontDescriptor.java	2020-07-11 17:35:34.780000000 +0900
+++ new/src/java.desktop/share/classes/sun/awt/FontDescriptor.java	2020-07-11 17:35:34.700000000 +0900
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -42,14 +42,21 @@
     public CharsetEncoder encoder;
     String charsetName;
     private int[] exclusionRanges;
+    private final boolean defaultFont;
 
     public FontDescriptor(String nativeName, CharsetEncoder encoder,
-                          int[] exclusionRanges){
+                          int[] exclusionRanges) {
+        this(nativeName, encoder, exclusionRanges, false);
+    }
+
+    public FontDescriptor(String nativeName, CharsetEncoder encoder,
+                          int[] exclusionRanges, boolean defaultFont) {
 
         this.nativeName = nativeName;
         this.encoder = encoder;
         this.exclusionRanges = exclusionRanges;
         this.useUnicode = false;
+        this.defaultFont = defaultFont;
         Charset cs = encoder.charset();
         // The following looks odd but its the only public way to get the
         // historical name if one exists and the canonical name otherwise.
@@ -123,4 +130,8 @@
                                                           "UnicodeBig"));
         isLE = !"UnicodeBig".equals(enc);
     }
+
+    public boolean isDefaultFont() {
+        return defaultFont;
+    }
 }