--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/net/InetAddress/nameservice/SimpleNameService.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2002-2006 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * A simple name service based on an in-memory HashMap.
+ */
+import java.net.UnknownHostException;
+import java.net.InetAddress;
+import sun.net.spi.nameservice.*;
+import java.util.*;
+
+public final class SimpleNameService implements NameService {
+
+    private static LinkedHashMap hosts = new LinkedHashMap();
+
+    private static String addrToString(byte addr[]) {
+        return Byte.toString(addr[0]) + "." +
+               Byte.toString(addr[1]) + "." +
+               Byte.toString(addr[2]) + "." +
+               Byte.toString(addr[3]);
+    }
+
+    // ------------
+
+    public static void put(String host, String addr) {
+        hosts.put(host, addr);
+    }
+
+    public static void put(String host, byte addr[]) {
+        hosts.put(host, addrToString(addr));
+    }
+
+    public static void remove(String host) {
+        hosts.remove(host);
+    }
+
+    public static int entries () {
+        return hosts.size();
+    }
+
+    public static int lookupCalls() {
+        return lookupCalls;
+    }
+
+    static int lookupCalls = 0;
+
+    // ------------
+
+    public SimpleNameService() throws Exception {
+    }
+
+    public InetAddress[] lookupAllHostAddr(String host) throws UnknownHostException {
+
+        lookupCalls ++;
+
+        String value = (String)hosts.get(host);
+        if (value == null) {
+            throw new UnknownHostException(host);
+        }
+        StringTokenizer st = new StringTokenizer(value, ".");
+        byte addr[] = new byte[4];
+        for (int i=0; i<4; i++) {
+            addr[i] = (byte)Integer.parseInt(st.nextToken());
+        }
+        InetAddress[] res = new InetAddress[1];
+        res[0] = InetAddress.getByAddress(host, addr);
+        return res;
+    }
+
+    public String getHostByAddr(byte[] addr) throws UnknownHostException {
+        String addrString = addrToString(addr);
+        Iterator i = hosts.keySet().iterator();
+        while (i.hasNext()) {
+            String host = (String)i.next();
+            String value = (String)hosts.get(host);
+            if (value.equals(addrString)) {
+                return host;
+            }
+        }
+        throw new UnknownHostException();
+    }
+}