I installed JBuilder X and made a small jsp program following the tutorial in JBuilder. The program has a single line in the html body

			

			Now is :
			<%= new java.util.Date() %>
			

		

After I click "Web Run", it said StandardServer.await: create[8081]: java.net.BindException: Address already in use: JVM_Bind

The detailed messages are as follow.

Starting service Tomcat-Standalone

Apache Tomcat/4.0.6

WebappLoader[/jspwebmodule]: Deploying class repositories to work directory E:docsprojjsptutorialTomcatworkjspwebmodule

WebappLoader[/jspwebmodule]: Reloading checks are enabled for this Context

StandardManager[/jspwebmodule]: Seeding random number generator class java.security.SecureRandom

StandardManager[/jspwebmodule]: Seeding of random number generator has been completed

ContextConfig[/jspwebmodule]: Added certificates -> request attribute Valve

StandardWrapper[/jspwebmodule]: Loading container servlet default

StandardWrapper[/jspwebmodule]: Loading container servlet invoker

HttpConnector[8080] Starting background thread

StandardServer.await: create[8081]: java.net.BindException: Address already in use: JVM_Bind

java.net.BindException: Address already in use: JVM_Bind

at java.net.PlainSocketImpl.socketBind(Native Method)

at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:331)

at java.net.ServerSocket.bind(ServerSocket.java:318)

at java.net.ServerSocket. (ServerSocket.java:185)

at org.apache.catalina.core.StandardServer.await(StandardServer.java:276)

at org.apache.catalina.startup.Catalina.start(Catalina.java:794)

at org.apache.catalina.startup.Catalina.execute(Catalina.java:681)

at org.apache.catalina.startup.Catalina.process(Catalina.java:179)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243)