求高手指教这个报错是怎么回事？

2011-4-7 0:36:23 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.6.0_16\bin;D:\apache-tomcat-6.0.16\bin
2011-4-7 0:36:23 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2011-4-7 0:36:23 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 586 ms
2011-4-7 0:36:23 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2011-4-7 0:36:23 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.16
2011-4-7 0:36:24 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "listeners.ContextListener" is already configured for this context. The duplicate definition has been ignored.
2011-4-7 0:36:24 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "listeners.SessionListener" is already configured for this context. The duplicate definition has been ignored.
2011-4-7 0:36:24 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2011-4-7 0:36:24 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
servlet3 init()
servlet2 init()
2011-4-7 0:36:25 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2011-4-7 0:36:25 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2011-4-7 0:36:25 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/47  config=null
2011-4-7 0:36:25 org.apache.catalina.startup.Catalina start
信息: Server startup in 1739 ms
2011-4-7 0:36:57 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet Servlet10 threw exception
java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:418)
at java.util.Properties.load0(Properties.java:337)
at java.util.Properties.load(Properties.java:325)
at cn.itcast.servlet.Servlet10.doGet(Servlet10.java:30)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
2011-4-7 0:38:35 org.apache.catalina.startup.HostConfig checkResources
信息: Reloading context [/day05]
servlet3 init()
servlet2 init()