Check Reachability using ping in Java

ping-host.java

// 주의사항 http://stackoverflow.com/a/10145643  
// The isReachable failure is an outstanding issue. 
// Again - there are several online resources indicating that there is no "perfect" way of doing this at the time of this writing, 
// due to the way the JVM tries to reach hosts - I guess it is an intrinsically platform specific task which, although simple, hasn't yet been abstracted sufficiently by the JVM.

private boolean ping(String host) {

    Runtime runTime = Runtime.getRuntime();
    String host = host;
    //-c CNT  Send only CNT pings
    //-W timeout Seconds
    String cmd = "ping -c 1 -W 10 "+host;
    Process process = null;

    try {
        process = runTime.exec(cmd);
    } catch(IOException ie){
        Log.e(TAG, "runtime.exec()", ie);
    }

    try {
        if (process != null) {
            process.waitFor();
            // 0 : success, 1 : fail, 2 : error
            int result = process.exitValue();
            return result == 0;
        }
    } catch(InterruptedException ie){
        Log.e(TAG, "proc.waitFor", ie);
    }

    return false;

}