How to execute cmd command in Java class?

Question

I want to call cmd command in java code. I say:

String str ="C:/uploaded_files/111.txt";
Process process = Runtime.getRuntime().exec(new String[]{"cmd.exe", "/c",str});
System.out.println(str);

And dont get 111.txt. Its strange because when this code was in jsp all works fine. What can be wrong?

What outcome would you expect from running the program, and what do you actually get? — Gustav Grusell
– Gustav Grusell, Commented Dec 25, 2012 at 9:01
@Gustav Grusell Hmm i want to get 111.txt in C:/uploaded_files folder. But folder still empty. — Kliver Max
– Kliver Max, Commented Dec 25, 2012 at 9:04
Well he most likely got just the String printed. He never asked for the process output. — Noctua
– Noctua, Commented Dec 25, 2012 at 9:04

Nidhish Krishnan · Accepted Answer · 2012-12-25 09:15:24Z

3

what's the problem with this code. It's perfectly working. opens and shows content of the file 111.txt

try {
    String str ="C:/uploaded_files/111.txt";
    Process process = Runtime.getRuntime().exec(new String[]{"cmd.exe", "/c",str});
    System.out.println(str);
    } catch (Exception ex) {}

please check whether the path is correct and whether the directories and files are not missed or spelled

edited Dec 25, 2012 at 9:15

answered Dec 25, 2012 at 9:09

Nidhish Krishnan

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Comments

Harish Raj · Accepted Answer · 2012-12-25 09:06:39Z

0

I hope It is not cmd.exe Please try this:

String[] command = new String[3];
command[0] = "cmd";
command[1] = "/c";
command[2] = "C:/uploaded_files/111.txt";

Process p = Runtime.getRuntime().exec (command);

answered Dec 25, 2012 at 9:06

Harish Raj

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1 Comment

Kliver Max Over a year ago

What you mean I hope It is not cmd.exe?

Sri Harsha Chilakapati · Accepted Answer · 2012-12-25 09:07:10Z

0

If you want to open the file in notepad try this.

String file = "C:/uploaded_files/111.txt";

Runtime.getRuntime().exec("cmd", "/c", "notepad.exe", file);

Hope it's the one you want.

answered Dec 25, 2012 at 9:07

Sri Harsha Chilakapati

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