Netbeans won't start Tomcat

Question

I am trying to start Tomcat for my homework using Netbeans. So I added Tomcat to Netbeans by clicking Tools -> server -> add server -> Apache Tomcat or TomEE -> /location/of/tomcat/directory/ but I did not provide an username and a password when adding the server to Netbeans because I don't want to be prompted for a password every time I use this server. I then created a web application and added a very simple index.html file along with a css file and a simple jsp file all under the "Web Pages" folder. When I tried to start Tomcat by clicking the play button, I get stuck on this line:

21-Apr-2020 00:13:00.705 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [1,833] milliseconds

After waiting for some time, I get a message from Netbean's console saying that Tomcat failed to start. When I check on the browser by typing localhost:8080 I get the following enter image description here

Please see below for the full output:

 NOTE: Picked up JDK_JAVA_OPTIONS:  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
21-Apr-2020 00:17:51.345 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name:   Apache Tomcat/9.0.34
21-Apr-2020 00:17:51.358 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Apr 3 2020 12:02:52 UTC
21-Apr-2020 00:17:51.358 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 9.0.34.0
21-Apr-2020 00:17:51.358 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Mac OS X
21-Apr-2020 00:17:51.358 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            10.15.4
21-Apr-2020 00:17:51.358 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          x86_64
21-Apr-2020 00:17:51.358 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/Home
21-Apr-2020 00:17:51.359 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           14+36-1461
21-Apr-2020 00:17:51.359 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
21-Apr-2020 00:17:51.359 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /Users/kevinchen/Documents/apache-tomcat-9.0.34
21-Apr-2020 00:17:51.359 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /Users/kevinchen/Documents/apache-tomcat-9.0.34
21-Apr-2020 00:17:51.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.lang=ALL-UNNAMED
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.io=ALL-UNNAMED
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/Users/kevinchen/Documents/apache-tomcat-9.0.34/conf/logging.properties
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dhttp.nonProxyHosts=localhost|127.0.0.1|Kevins-MacBook-Pro-2.local
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
21-Apr-2020 00:17:51.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
21-Apr-2020 00:17:51.390 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
21-Apr-2020 00:17:51.390 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
21-Apr-2020 00:17:51.390 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/Users/kevinchen/Documents/apache-tomcat-9.0.34
21-Apr-2020 00:17:51.390 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/Users/kevinchen/Documents/apache-tomcat-9.0.34
21-Apr-2020 00:17:51.390 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/Users/kevinchen/Documents/apache-tomcat-9.0.34/temp
21-Apr-2020 00:17:51.390 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/Users/kevinchen/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.]
21-Apr-2020 00:17:51.722 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
21-Apr-2020 00:17:51.793 INFO [main] org.apache.catalina.startup.Catalina.load Server initialization in [762] milliseconds
21-Apr-2020 00:17:51.864 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
21-Apr-2020 00:17:51.865 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: [Apache Tomcat/9.0.34]
21-Apr-2020 00:17:51.889 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/docs]
21-Apr-2020 00:17:52.230 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/docs] has finished in [342] ms
21-Apr-2020 00:17:52.230 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/manager]
21-Apr-2020 00:17:52.299 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/manager] has finished in [69] ms
21-Apr-2020 00:17:52.301 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/examples]
21-Apr-2020 00:17:52.902 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/examples] has finished in [602] ms
21-Apr-2020 00:17:52.903 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/ROOT]
21-Apr-2020 00:17:52.938 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/ROOT] has finished in [35] ms
21-Apr-2020 00:17:52.939 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/host-manager]
21-Apr-2020 00:17:52.992 INFO [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/Users/kevinchen/Documents/apache-tomcat-9.0.34/webapps/host-manager] has finished in [54] ms
21-Apr-2020 00:17:53.003 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
21-Apr-2020 00:17:53.024 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [1,230] milliseconds

From the logs:

21-Apr-2020 00:01:00.525 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
21-Apr-2020 00:01:00.526 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
21-Apr-2020 00:01:00.528 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker', 'async.Stockticker@2b95e48b')
21-Apr-2020 00:06:17.423 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
21-Apr-2020 00:06:17.423 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
21-Apr-2020 00:06:33.489 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
21-Apr-2020 00:06:33.490 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
21-Apr-2020 00:06:33.493 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker', 'async.Stockticker@2b95e48b')
21-Apr-2020 00:12:54.964 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
21-Apr-2020 00:12:54.964 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
21-Apr-2020 00:13:00.616 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
21-Apr-2020 00:13:00.616 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
21-Apr-2020 00:13:00.617 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker', 'async.Stockticker@efde75f')
21-Apr-2020 00:16:40.591 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
21-Apr-2020 00:16:40.591 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
21-Apr-2020 00:17:52.885 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
21-Apr-2020 00:17:52.885 INFO [main] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
21-Apr-2020 00:17:52.891 INFO [main] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker', 'async.Stockticker@62ea3440')

On the "Run" console:

init:
deps-module-jar:
deps-ear-jar:
deps-jar:
library-inclusion-in-archive:
library-inclusion-in-manifest:
compile:
compile-jsps:
Starting Tomcat process...
Waiting for Tomcat...
Starting of Tomcat failed.
BUILD FAILED (total time: 3 minutes 2 seconds)

Answer 1

Try to check the start/stop ports. I was on the same issue and I solved choosing different ports.

Answer 2

If you have installed the Apache Tomcat, maybe your Apache service is already running and it conflicts with Netbeans. You may stop the apache service which is automatically running and then run your application in Netbeans.

Check out to

start->Services->hit enter

stop the Apache Tomcat if running then goto Netbeans right click on project and select run . Netbean will start tomcat and deploy your web app onto the Tomcat server and now it will run successfully.

Answer 3

I've been getting the same thing on more recent versions of Tomcat (seems like it started around 9.0.30). I switched to an older version (9.0.24) and it started working. Not sure what broke but something did in the newer ver