System.exit(0) will not close the program

Question

uh, for some reason when the conditions inside the processInputString are met, the program fails to shutdown. The msg to console is posted and program hangs when it should close.
public class JPing2 {
    public static void main(String[] args) {
        String ip = "74.125.67.100";    //google.com
        String pingCmd = "ping -t " + ip;
        try {
            Runtime r = Runtime.getRuntime();
            Process p = r.exec(pingCmd);
            BufferedReader br = new BufferedReader(new
            InputStreamReader(p.getInputStream()));
            String inputLine = new String();
            while ((inputLine = br.readLine()) != null) {
                System.out.println(inputLine);
                processInputString(inputLine);
            br.close();
        } catch (IOException ioe) {
            System.out.println(ioe.getMessage());
            System.exit(0);
     * Parses a string looking for ping failures
    static void processInputString(String input) {
        String failMsg = new String("Request timed out.");
        if (input.equals(failMsg)) {
            System.err.println("failure detected");
            System.exit(0);
        } else if (input.equals("Reply from 74.125.67.100: bytes=32 time=33ms TTL=51")) {
            System.err.println("normal operation");
            System.exit(0);
}what the hell, am I missing something?
Edited by: rico16135 on Aug 24, 2009 10:17 PM

Answer 1

Probably because it's blocked reading the process output and this might be an operation that can't be interrupted.