java.io.IOException: Cannot run program "dir": CreateProcess error=2, Das System

Question

Hello I try to run the following cmd code in eclipse:

 "DIR \""+DEV_HOME+"\\src\"\\*.java /b /s >> \""+DEV_HOME+"\\bin\\javaFiles.txt\""

In clear it looks like this:

DIR "D:\Thomas\Dokumente\Daten\workspace\WBRLight\src"\*.java /b /s >> "D:\Thomas\Dokumente\Daten\workspace\WBRLight\bin\javaFiles.txt"

But I get following error message:

java.io.IOException: Cannot run program "dir": CreateProcess error=2, Das System kann die angegebene Datei nicht finden
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1041)
at java.lang.Runtime.exec(Runtime.java:617)
at java.lang.Runtime.exec(Runtime.java:450)
....

When I try to use the code in the cmd box, Its working fine. My code:

    public void run_cmdLine(String command) {
    try {
        Runtime rt = Runtime.getRuntime();
        BufferedReader input = null;
        Process pr = null;

        pr = rt.exec(command);
        input = new BufferedReader(new inputStreamReader(pr.getInputStream()));

        String line = null;

        while ((line = input.readLine()) != null) {
            System.out.println(line);
        }

        int exitVal = pr.waitFor();
        System.out.println("Exited with error code " + exitVal);

    } catch (Exception e) {
        System.out.println(e.toString());
        e.printStackTrace();
    }
}

Mahozad · Accepted Answer · 2021-12-01 13:29:12Z

19

Add "cmd.exe /c" at the beginning of your command string, that should do the trick.

The /c parameter will make the cmd finish and return it to the Java process.
Without it, the process will hang.

edited Dec 1, 2021 at 13:29

Mahozad

26.3k19 gold badges163 silver badges200 bronze badges

answered Jan 22, 2014 at 11:23

jeroen_de_schutter

1,9031 gold badge18 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Martin Erlic Over a year ago

When I did this I got nothing in return.

Zsolt Z. Over a year ago

If you're using ProcessBuilder::start instead of Runtime::exec, you need to pass the strings "cmd", "/c" and "dir" separately to the constructor.

Collectives™ on Stack Overflow

java.io.IOException: Cannot run program "dir": CreateProcess error=2, Das System

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related