Edit C:\Program Files\Java\jdk1.8.0_121\db\lib\WEB-INF\web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to you under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!DOCTYPE web-app PUBLIC
	"-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
	"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app id = "DERBYNET_ID">

<display-name>Apache Derby Network Server</display-name>
<description> Apache Network Server Administration </description>

<servlet>
	<servlet-name> derbynet </servlet-name>
	<servlet-class> org.apache.derby.drda.NetServlet </servlet-class>
	<init-param>
	  <param-name>  startNetworkServerOnInit </param-name>
	  <param-value> true </param-value>
	  <description> Starts the Network Server at servlet 
				initialization if 'true'. </description>
	</init-param>
	<init-param>
	  <param-name>  portNumber </param-name>
	  <param-value> 1527 </param-value>
	  <description> Port number to use. The default is 1527. </description>
	</init-param>
        
	<init-param>
	  <param-name>  host </param-name>
	  <param-value> localhost </param-value>
	  <description> Host Name to use. The default is "localhost". Please secure any server which listens on a public address. </description>
	</init-param>
	<init-param>
	  <param-name>  tracingDirectory </param-name>
	  <param-value></param-value>
	  <description> Directory where trace files should be placed. </description>
	</init-param>
</servlet>

<servlet-mapping>
	<servlet-name> derbynet </servlet-name>
	<url-pattern> /derbynet </url-pattern>
</servlet-mapping>

<welcome-file-list>
     <welcome-file>/derbynet</welcome-file>
</welcome-file-list>

</web-app>

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