How do I call another exe file from a Java program?

Question

Hi,
I am doing a simple IDE (text editor/interpreter) for a simple programming language we are developing. It will be submitted as our project for this semester. I created an exe file (in C) which will be used as the interpreter. How do I call the interpreter from my IDE? The interpreter should run when the user clicks a button (i.e. the "Run" button). I've tried the Java Runtime class but it doesn't work. Anyone who knows how to do it?
Thanks!

Answer 1

I first tried to do a simple program that calls system commands such as dir, cd <dir>, etc.
I do not have the exact code right now but as far as I can remember, here's what I wrote:
class Sample{
    public static void main(String args[]) throws IOException{
       BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
       String command;
       while ((command = in.readLine()).equalsIgnoreCase("exit") == false){
          try{
            Runtime.getRuntime().exec(command);
          }catch(Exception e){
             System.err.println("Error: " + e);
      System.exit(0);
}