system-exec.java

/*
 * Code hijacked and modified from: http://devdaily.com/java/edu/pj/pj010016/
 */

import java.io.*;

public class JavaRunCommand {

    public static void main(String args[]) {

        String s = null;
        String binary = "C:\some\variable\binary\or\executable\path.ext";

        try {
            
	    // run the binary / executable using the Runtime exec method
            Process p = Runtime.getRuntime().exec(binary);
            
            BufferedReader stdInput = new BufferedReader(new 
                 InputStreamReader(p.getInputStream()));

            BufferedReader stdError = new BufferedReader(new 
                 InputStreamReader(p.getErrorStream()));

            // read the output from the command
            System.out.println("Here is the standard output of the command:\n");
            while ((s = stdInput.readLine()) != null) {
                System.out.println(s);
            }
            
            // read any errors from the attempted command
            System.out.println("Here is the standard error of the command (if any):\n");
            while ((s = stdError.readLine()) != null) {
                System.out.println(s);
            }
            
            System.exit(0);
        }
        catch (IOException e) {
            System.out.println("exception happened - here's what I know: ");
            e.printStackTrace();
            System.exit(-1);
        }
    }
}