How to close application (stanford: it is a folder consists many programs.) in CMD after I open it? java ProcessBuilder Runtime

Question

Please know that stanford is not exe. it is a folder consists many programs

I open the cmd.exe by using following statement:

public static void runStanfordCMD() throws IOException{
    List<String> cmds = Arrays.asList("cmd.exe", "/C", "start", "java", "-mx4g", "-cp", "*", "edu.stanford.nlp.pipeline.StanfordCoreNLPServer");
    ProcessBuilder builder = new ProcessBuilder(cmds);
    builder.directory(new File("D:/Desktop/stanford-corenlp-full-2015-12-09"));
    Process proc = builder.start();
}

so how to close the cmd.exe after I finished some process?

by using ProcessBuilder or Runtime? If using ProcessBuilder how to write the statement according to my case?

how to write the statement to the Runtime according to my case?

public static void closeStanfordCMD() throws IOException{
    try {
        Runtime.getRuntime().exec("command.exe  /C" + "Your command");  // how to write the statement?

    } catch (Exception e) {
        e.printStackTrace();  
    }
}

you asked , so how to close the cmd.exe after I finished some process?? but your title question is insane. which program do you want to close , standford folder or programs under standford folder? — Ye Win, Nov 11 '16 at 08:55
Possible duplicate of [Killing a process using Java](http://stackoverflow.com/questions/6356340/killing-a-process-using-java) — ArcticLord, Nov 11 '16 at 08:56

score 1 · Answer 1 · edited Jun 08 '19 at 04:31

1

// how to write the statement?

if you want to close command prompt:

Runtime.getRuntime().exec("taskkill /IM " + "cmd.exe");

if you want to close stanford.exe:

Runtime.getRuntime().exec("taskkill /IM " + "stanford.exe");

edited Jun 08 '19 at 04:31

Cœur

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answered Nov 11 '16 at 08:35

Ye Win

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it does not work. as my application has its address. the CMD cannot be closed – bob90937 Nov 11 '16 at 08:38
Maybe replacing `cmd.exe` with your application name will close it immediately. – Lefteris008 Nov 11 '16 at 08:40
it work perfectly. pls retest and think about your program. – Ye Win Nov 11 '16 at 08:40
I doubt it works, and it can be dangerous, because "cmd.exe" is an image name shared by several executing processes. Which one will be killed? – Little Santi Nov 11 '16 at 08:42
@LittleSanti, I updated my answers, first time I thought OP want to close CMD as to his sentences. – Ye Win Nov 11 '16 at 08:44

Mihály Lestyán · Answer 2 · 2016-11-11T09:10:38.077

1

The method Runtime.getRuntime().exec returns an object of Process.

Process has a method destroy() which kills the process you're running.
So what you need is to store the Process object returned by the exec method and call destroy() on it when you want to kill the process.

Also you can call waitFor() method to wait for the process to stop (Causes the current thread to wait, if necessary, until the process represented by this Process object has terminated).

To make it clear, try this code (or modify for your needs):

try {
    Process p = Runtime.getRuntime().exec("java -mx4g -cp * D:/Desktop/stanford-corenlp-full-2015-12-09/edu.stanford.nlp.pipeline.StanfordCoreNLPServer");
    p.waitFor();
}
catch (IOException e) {
    e.printStackTrace();
}
catch (InterruptedException e) {
    e.printStackTrace();
}

edited Nov 11 '16 at 09:10

answered Nov 11 '16 at 08:44

Mihály Lestyán

272
3
8

No, it can't close the program – Ye Win Nov 11 '16 at 08:47
Well, you shouldn't run cmd.exe. There is no need for that. Instead you need to run the application directly with the exec method. For example Runtime.getRuntime().exec("myapplication.exe"). – Mihály Lestyán Nov 11 '16 at 08:50
standford is not .exe – bob90937 Nov 11 '16 at 08:53
Since the exec method runs a process, it doesn't need to be an .exe. It can be anything your OS can run. – Mihály Lestyán Nov 11 '16 at 08:54
I think this solution should work, but the OP must not use `cmd /c start` to run his/her program, but just `cmd /c` (because `start` would create another -unnecessary- subprocess). – Little Santi Nov 11 '16 at 14:01
There is no cmd /c start command in my answer. Please forget starting processes via cmd as you will loose the platform independent behaviour of java. And this is the main point of exec method. – Mihály Lestyán Nov 11 '16 at 14:20

How to close application (stanford: it is a folder consists many programs.) in CMD after I open it? java ProcessBuilder Runtime

2 Answers2