创建命令行并关闭回显

Question

I've read some articles on this subject, but I've been having troubles executing it myself. I'm trying to create a program that creates a command line with echo off, and this is the command I'm using at the moment:

Runtime.getRuntime().exec( "cmd.exe /q /k start" );

Now, I know using rt.exec() is generally something people like to stray away from, however this isn't going to be a large-scale program, just a small text & object-based RPG in Java I'm making for fun with my friend.

Right now, the command line is appearing properly but displays like I just normally opened the command line through cmd.exe. Is there something I'm not understanding here?

Answer 1

With cmd.exe /q /k start you end up with two cmd prompts - the cmd.exe one, and the start one. start opens a new shell prompt, but not a quiet one (see here for more information about start : https://technet.microsoft.com/en-us/library/cc770297(v=ws.11).aspx ).

I assume you only need that one cmd prompt, so try this instead:

Runtime.getRuntime().exec( "cmd.exe /q" );

Edit:

I didn't account for that cmd.exe terminates after being executed by Runtime.getRuntime().exec .
After some trial and error, this should work:

Runtime.getRuntime().exec( "cmd.exe /q /k start title /i" );

The /i parameter to start tells it to inherit the environment from where it was invoked, and this environment is quiet, thanks to the /q parameter to cmd.exe .