How do I resolve the java net BindException Address already in use JVM Bind error

Question

In Eclipse  I got this error   run        java  Error creating the server socket        java  Oct 04  2012 5 31 38 PM cascadas ace AceFactory bootstrap       java  SEVERE  Failed to create world   java net BindException  Address already in use  JVM Bind       java  Java Result  -1 BUILD SUCCESSFUL Total time  10 seconds   I m not sure why it came up  now  but it ran fine just a few hours ago  Do I need to restart my machine  How do i get to the bottom of it  I appreciate any tips or advice

User · Answer

You need to close your port  if you are a linux user then type  fuser -k 8080 tcp

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You have another process running on the same port    You could try killing one of the java exe services running in your task manager - ps make sure you dont kill eclipse since that is listed as java exe as well  If nothing else works  restarting your machine will fix it anyhow  It looks like youre not shutting down a socket from a previous test  Hope this helps

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In my case Tomcat was running in a background  I ve installed it as a external servlet while using Eclipse  With a Spring Boot in Intellij it has it own server but cannot start while it s already occupied  In my case Tomcat starts automatically I turn on my OS  that is why I need to shut down him manualy     sudo service tomcat stop   of course  tomcat  depends what version of tomcat you are using    Hope it might help to someone

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It means some other process is already using the port  In case if this port is being used by some other critical applications and you don t want to close that application  the better way is to choose any other port which is free to use    Configure your application to use any other port which is free and you will see your application working

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Your port must be busy in some Other Process  So you can download TCPView on https   technet microsoft com en-us sysinternals bb897437 and kill the process for used port   If you don t know your port  double click on the server that is not starting and click on Open Server Properties Page and click on glassfish from left column  You will find the ports here

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For those who are looking for the simplest of the answers  as that is what we usually miss   just stop your running project and start it again  Most of the time what we do is we forget to stop the project we ran earlier and when we re-run the project it shows such an issue    I am also attaching a photo to make it clearer  I use  Spring tool suite    So what you need to do is either click the button on the extreme right  if you want to relaunch the same project or first click on the button which is 2nd from the right to stop your project and then the button on the extreme left to run your project  I hope this will solve the issue of few of the newer programmers

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If you know what port the process is running you can type   lsof -i  lt port gt     For instance  lsof -i 8080  to list the process  pid  running on port 8080    Then kill the process with kill  lt pid gt

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I faced similar issue in Eclipse when two consoles were opened when I started the Server program first and then the Client program  I used to stop the program in the single console thinking that it had closed the server  but it had only closed the client and not the server  I found running Java processes in my Task manager  This problem was solved by closing both Server and Client programs from their individual consoles Eclipse shows console of latest active program   So when I started the Server program again  the port was again open to be captured

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Yes  as Guido Simone said it because another process listening to the same port If you are in Ubuntu You can simply kill that process giving command sudo kill   sudo lsof -t -i  port number    ex  sudo kill   sudo lsof -t -i 8080   But once it didn t work for me  i gave the command    lsof -i  port     and it shows nothing    I checked my docker containers using command docker ps -a but non of them alive All containers has stopped  but i remember  i stopped one container which was used same port few minutes ago   To make sure that docker is not the reason I stop whole docker process using command sudo service docker stop and try again  Surprisingly eclipse didn t show the error at that time  It run my program perfectly   Hope my experience will help some one

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In Mac    Kill process Terminal  kill  lt pid gt   Find pid  Terminal  lsof -i  lt port gt   From Diego Pino answer

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In Windows CMD line  find out the Process ID that hold a connection on the bind port by entering following command   C   netstat -a -o  -a show all connections  -o show process identifier  And then Terminate the process

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Yes you have another process bound to the same port   TCPView  Windows only  from Windows Sysinternals  is my favorite app whenever I have a JVM BIND error   It shows which processes are listening on which port   It also provides a convenient context menu to either kill the process or close the connection that is getting in the way

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1  check the port is in use or not  kill that process    lsof -i  port    2  another reason is the port is used by ipv6  solution   edit  etc sysctl conf   add this to the file  net ipv6 conf all disable ipv6   1  then make it effect    sudo sysctl -p  etc sysctl conf   or just reboot

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Restart the PC once  I think it will work  It started working in my case  One more thing can be done go to Task Manager and End the process

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Windows Only   To kill a process you first need to find the Process Id  pid   By running the command    netstat -ano   findstr  yourPortNumber     You will get your Process Id  PID   Now to kill the same process run this command   taskkill  pid yourid  f

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In windows   netstat -ano   will list all the protocols  ports and processes listening   Use  taskkill -pid  proces to kill   f   to kill the process listening to the port  e g   taskkill -pid 431  f

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For windows    Find the process id netstat -nao   find  quot 8080 quot    It will show you the process ID as a number  Example  TCP    0 0 0 0 8080           0 0 0 0 0              LISTENING       18856  Here 18856 is the process ID  Kill that process taskkill  PID  18856  F   Output   SUCCESS  The process with PID 18856 has been terminated  Here using taskkill you are killing the process ID  18856 For linux Mac  sudo kill -9   sudo lsof -t -i 8080   Here you are find the process using sudo lsof -t -i 8080 and killing it by sudo kill command

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The port is already being used by some other process as  Diego Pino said u can use lsof on unix to locate the process and kill the respective one  if you are on windows use netstat -ano to get all the pids of the process and the ports that everyone acquires  search for your intended port and kill   to be very easy just restart your machine   if thats possible

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In Ubuntu Unix we can resolve this problem in 2 steps as described below    Type netstat -plten  grep java  This will give an output similar to   tcp   0   0 0 0 0 0 8080   0 0 0 0    LISTEN   1001  76084  9488 java          Here 8080 is the port number at which the java process is listening and 9488 is its process id  pid   In order to free the occupied port  we have to kill this process using the kill command   kill -9 9488   9488 is the process id from earlier  We use -9 to force stop the process     Your port should now be free and you can restart the server

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You can close every Java Process and start again your app  taskkill  F  IM java exe  start your app again

[java] How do I resolve the "java.net.BindException: Address already in use: JVM_Bind" error?

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