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

The java.net.BindException: Address already in use: JVM_Bind error occurs when you try to bind a socket to a local address and port, but the address and port are already in use by another process. This can happen when you try to start a server on a port that is already being used by another server, or when you try to bind a client socket to a local address and port that are already in use.

To fix this error, you need to find the process that is using the address and port and stop it, or choose a different address and port for your server or client.

Here are some steps you can follow to troubleshoot the BindException error:

  1. Use the netstat command to find out which process is using the address and port. On Windows, you can open a command prompt and type netstat -aon | findstr :<port>, where <port> is the port number you are trying to bind to. On Linux or macOS, you can type netstat -anp | grep :<port>. This will show you a list of all the active connections and the PID of the process that is using each connection.

  2. Use the tasklist command (on Windows) or the ps command (on Linux or macOS) to find the name of the process that is using the address and port. On Windows, you can type tasklist /fi "PID eq <pid>", where <pid> is the PID of the process you want to find. On Linux or macOS, you can type ps -o pid,comm -p <pid>.

  3. Stop the process that is using the address and port. You can use the taskkill command (on Windows) or the kill command (on Linux or macOS) to stop the process. On Windows, you can type taskkill /pid <pid> /f, where <pid> is the PID of the process you want to stop. On Linux or macOS, you can