javax.naming.NameNotFoundException: Name evn is not bound in this Context
at org.apache.naming.NamingContext.lookup(NamingContext.java:770)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)
at javax.naming.InitialContext.lookup(Unknown Source)
at listener.MyContextListener.contextInitialized(Unknown Source)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

i m using belowcode to connect database which is on other system
Content.xml

<Resouce name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource"
maxActive="100" maxIdle="30" maxWait="1000"
username="root" password="developer" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306//javatest"/>

using below method

public void contextInitialized(ServletContextEvent arg) {
		// TODO Auto-generated method stub
		Context con = null;
		try {
			con = new InitialContext();
			System.out.println("from context:::::::::::::::::::::::::::::::::::::::::::::::");
		} catch (NamingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		DataSource dts = null;
		try {
			System.out.println("from datacontext:::::::::::::::::::::::::::::::::::::::::::::::");
			dts = (DataSource)con.lookup("java:comp/evn/jdbc/TestDB");
			System.out.println("from  after datacontext:::::::::::::::::::::::::::::::::::::::::::::::");
			
		} catch (NamingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		if(dts!=null)
		{
			try {
				System.out.println("from co:::::::::::::::::::::::::::::::::::::::::::::::");
				conn=dts.getConnection();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(conn!=null)
		{
			arg.getServletContext().setAttribute("connection", conn);
		}
		
	}

I have use below command to create database
create database TestDB;
use TestDB;
Create table TestTable
{
name varchar(25),
point int
};

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