I have the following string which is what I have received at the end of a ping result, I wish to extract the min,avg,max and mdev using regex in java
[1463895327]PING www.gov.bw (168.167.134.24) 100(128) bytes of data.
[1463895327]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=1 ttl=110 time=868 ms
[1463895328]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=2 ttl=110 time=892 ms
[1463895329]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=3 ttl=110 time=814 ms
[1463895330]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=4 ttl=110 time=1009 ms
[1463895331]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=5 ttl=110 time=1006 ms
[1463895332]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=6 ttl=110 time=984 ms
[1463895333]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=7 ttl=110 time=1004 ms
[1463895334]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=8 ttl=110 time=1006 ms
[1463895335]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=9 ttl=110 time=1013 ms
[1463895336]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=10 ttl=110 time=578 ms
[1463895336]
[1463895336]--- www.gov.bw ping statistics ---
[1463895336]10 packets transmitted, 10 received, 0% packet loss, time 9007ms
[1463895336]rtt min/avg/max/mdev = 578.263/917.875/1013.707/132.095 ms, pipe 2
I want to extract the values from the substring
min/avg/max/mdev = 578.263/917.875/1013.707/132.095 ms
What would be the regex expression which would allow me to extract these 4 values an array of type double? The expected result is an array with
[274.175,430.739,818.328,147.779]
I've already tried the expression:
rtt\s+min\/avg\/max\/mdev\s+=\s+([0-9]+\.[0-9]+)\/([0-9]+\.[0-9]+)\/([0-9]+\.[0-9]+)\/([0-9]+\.[0-9]+)\s+ms
Using
// No error but all values null
public static String[] parsePingStatisticsMinAvgMaxMdev(String input) throws TimeNotFoundException {
// Capture the rtt min/avg/max/mdev times
Pattern p = Pattern.compile("rtt\\s+min\\/avg\\/max\\/mdev\\s+=\\s+([0-9]+\\.[0-9]+)\\/([0-9]+\\.[0-9]+)\\/([0-9]+\\.[0-9]+)\\/([0-9]+\\.[0-9]+)\\s+ms");
Matcher m = p.matcher(input);
if (m.find()){
int i = 0;
String[] s = new String[4];
while(m.find()){
s[i] = m.group(++i);
}
return s;
}
else
throw new TimeNotFoundException();
}
I get no output (below). How do I fix this?
"C:\Program Files\Java\jdk1.8.0_71\bin\java" ...
Process finished with exit code 0
You were almost there!
public class Main {
static String s = "[1463895327]PING www.gov.bw (168.167.134.24) 100(128) bytes of data.\n" +
"[1463895327]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=1 ttl=110 time=868 ms\n" +
"[1463895328]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=2 ttl=110 time=892 ms\n" +
"[1463895329]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=3 ttl=110 time=814 ms\n" +
"[1463895330]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=4 ttl=110 time=1009 ms\n" +
"[1463895331]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=5 ttl=110 time=1006 ms\n" +
"[1463895332]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=6 ttl=110 time=984 ms\n" +
"[1463895333]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=7 ttl=110 time=1004 ms\n" +
"[1463895334]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=8 ttl=110 time=1006 ms\n" +
"[1463895335]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=9 ttl=110 time=1013 ms\n" +
"[1463895336]108 bytes from www.gov.bw (168.167.134.24): icmp_seq=10 ttl=110 time=578 ms\n" +
"[1463895336]\n" +
"[1463895336]--- www.gov.bw ping statistics ---\n" +
"[1463895336]10 packets transmitted, 10 received, 0% packet loss, time 9007ms\n" +
"[1463895336]rtt min/avg/max/mdev = 578.263/917.875/1013.707/132.095 ms, pipe 2";
public static void main(String args[]) throws IOException {
System.out.print(Arrays.toString(parsePingStatisticsMinAvgMaxMdev(s)));
}
public static String[] parsePingStatisticsMinAvgMaxMdev(String input) { throws TimeNotFoundException {
// Capture the rtt min/avg/max/mdev times
Pattern p = Pattern p = Pattern.compile("rtt\\s+min\\/avg\\/max\\/mdev\\s+=\\s+(\\d+\\.\\d+)\\/(\\d+\\.\\d+)\\/(\\d+\\.\\d+)\\/(\\d+\\.\\d+)\\s+ms");
Matcher m = p.matcher(input);
if (m.find()) {
int i = 1;
String[] s = new String[4];
while (m.find(i) && i <= 4) {
s[i - 1] = m.group(i);
i++;
}
return s;
} else
throw new TimeNotFoundException();
}
}
Output:
[578.263, 917.875, 1013.707, 132.095]