--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.charsets/share/classes/sun/nio/cs/ext/MS50220.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2005, 2012, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.nio.cs.ext;
+
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetDecoder;
+import java.nio.charset.CharsetEncoder;
+import sun.nio.cs.DoubleByte;
+import sun.nio.cs.*;
+
+public class MS50220 extends ISO2022_JP
+{
+    public MS50220() {
+        super("x-windows-50220",
+              ExtendedCharsets.aliasesFor("x-windows-50220"));
+    }
+
+    protected MS50220(String canonicalName, String[] aliases) {
+        super(canonicalName, aliases);
+    }
+
+    public String historicalName() {
+        return "MS50220";
+    }
+
+    public boolean contains(Charset cs) {
+      return super.contains(cs) ||
+             (cs instanceof JIS_X_0212) ||
+             (cs instanceof MS50220);
+    }
+
+    public CharsetDecoder newDecoder() {
+        return new Decoder(this, DEC0208, DEC0212);
+    }
+
+    public CharsetEncoder newEncoder() {
+        return new Encoder(this, ENC0208, ENC0212, doSBKANA());
+    }
+
+    private final static DoubleByte.Decoder DEC0208 =
+        (DoubleByte.Decoder)new JIS_X_0208_MS5022X().newDecoder();
+
+    private final static DoubleByte.Decoder DEC0212 =
+        (DoubleByte.Decoder)new JIS_X_0212_MS5022X().newDecoder();
+
+    private final static DoubleByte.Encoder ENC0208 =
+        (DoubleByte.Encoder)new JIS_X_0208_MS5022X().newEncoder();
+
+    private final static DoubleByte.Encoder ENC0212 =
+        (DoubleByte.Encoder)new JIS_X_0212_MS5022X().newEncoder();
+
+    protected boolean doSBKANA() {
+        return false;
+    }
+}