how to execute command line .exe file in java

Question

1. i want to convert an avi file to 3gp using java program.
2. For this i am using "E.M. Total Video Converter Command Line 2.43" and the command for it is
   "C:\E.M. TVCC>TVCC -f E:\TestVideo\01.avi -o E:\OutputFiles\target.3gp"
3. I got a program to execute command line exe file on site http://www.rgagnon.com/javadetails/java-0014.html which is:

Path to executable with spaces in them

You can include a path for the program to be executed. On the Win plateform, you need to put the path in quotes if the path contains spaces.

public class Test {
  public static void main(String[] args) throws Exception {
    Process p = Runtime.getRuntime().exec(
       "\"c:/program files/windows/notepad.exe\"");
    p.waitFor();
  }
}

If you need to pass arguments, it's safer to a String array especially if they contain spaces.

String[] cmd = { "myProgram.exe", "-o=This is an option" };
Runtime.getRuntime().exec(cmd);

If using the start command and the path of the file to be started contains a space then you must specified a title to the start command.

String fileName = "c:\\Applications\\My Documents\\test.doc";
String[] commands = {"cmd", "/c", "start", "\"DummyTitle\"",fileName};
Runtime.getRuntime().exec(commands);

***Can anyone help me to put the above command in this code?***I dont know the syntax rules to put that command in the above code.Please help me.

This is the exact java code i am using:

public class Test {
    public static void main(String[] args) throws Exception {

        String[] cmd = { "C:\\Program Files\\E.M. TVCC\\TVCC.exe", "-f C:\\Program Files\\E.M. TVCC\\01.avi", "-o C:\\Program Files\\E.M. TVCC\\target.3gp" };
        Process p = Runtime.getRuntime().exec(cmd);
        p.waitFor();
    }
}

Answer 1

In some cases you want to be able to do more like: - Kill the exe in case it hung. - Be able to abort the exe. - Get the exe output (to the standard output and the standard error) - Run it asynchronously. You can read on a solution at: http://developer4life.blogspot.co.il/2013/01/executing-command-line-executable-from.html

Answer 2

You've got all the pieces in your question. It's just a matter of putting it all together.

Something such as the following should work:

public class Test {
    public static void main(String[] args) throws Exception {

        String[] cmd = { "C:\\E.M. TVCC\\TVCC.exe", "-f E:\\TestVideo\\01.avi", "-o E:\\OutputFiles\\target.3gp" };
        Process p = Runtime.getRuntime().exec(cmd);
        p.waitFor();
    }
}

That said, hard coding paths like this isn't a good idea, you should read them from somewhere; arguments to your program, a properties file, etc.