Parse out time portion from ping results in Java

Question

I managed to modify a program to ping peer computer and gets the ping counts. How can I parse out the time = ?ms from the ping count results, in real-time?

Answer 1

You could use indexOf:

pingResult = pingResult.substring(pingResult.indexOf("time="));

Then remove the TTL:

pingResult = pingResult.substring(0, pingResult.indexOf("TTL"));

Therefore, the final code:

Runtime r = Runtime.getRuntime();
Process p = r.exec(pingCmd);

BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
    System.out.println(inputLine);
    pingResult += inputLine;
}
in.close();
pingResult = pingResult.substring(pingResult.indexOf("time=")).substring(0, pingResult.indexOf("TTL"));

Answer 2

Try this:

Pattern pattern = Pattern.compile("time=(\\d+)ms");
Matcher m = null;
while ((inputLine = in.readLine()) != null) {
    m = pattern.matcher(inputLine);
    if (m.find()) {
        System.out.println(m.group(1));
    }
}

Which outputs the millisecond value from the captured patterns.