CommandLine Immediately Return Result

[ghost]

i have command line application that have ability to listen to port for incoming updates there is subcommand as method called bionic listen -p <port> in main method I have System.exit(new CommandLine(new CheckSum()).execute(args)) when i run the command, server starts and immediately exit, how can I stop this behavior? (new CommandLine(new CheckSum() returns immediately after commands run)

[remkop]

Sorry for the late reply, I missed this.

One idea is to simply not return from the run method after starting the server.

 public void run() {
    Server server = new Server();
    server.start();
    while (server.isRunning()) {
        Thread.sleep(1);
    }
}

[ghost]

thank you for answering, I really appreciate it
currently, I did not return anything from the run method and it works perfectly but the downside is that other commands also can't set error code, and I'm looking for a way to work around this 💭

[remkop]

Sorry, I don’t understand what the problem is. Did you see this section in the user manual? https://picocli.info/#_generating_an_exit_code

[ghost]

I must read the documentation more precisely 😀, Thank you, that was exactly what I looking for.