Controlling The Command Line with Java

Posted by Scott

February 4, 2008

I wrote this to launch some batch files from within an Java program.

public class CmdExec {

    // process invoking program will call
    private Process p;

    // empty constructor
    public CmdExec() {  }

    // execute command
    public void exe(String cmdline) {
        try {
            // string for system out
            String line;
            // create process
            p = Runtime.getRuntime().exec(cmdline);
            // capture output stream of program
            BufferedReader input = new BufferedReader(new InputStreamReader(p
                    .getInputStream()));
            // get all lines of output
            while ((line = input.readLine()) != null) {
                System.out.println(line);
            }
            // close input stream
            input.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    // ability to kill process
    public void kill() {
        p.destroy();
    }
}

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