how do I extract characters consecutive to the substring and the substring itself After checking if string array contains the required substring

Question

Im trying to deal with the following string array called "wifis":-

[SSID: Stephen Joseph, BSSID: ##:a6:##:c0:21:##, capabilities: [WPA2-PSK-CCMP][WPS][ESS], level: -78, frequency: 2442, timestamp: 998653673499, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: TP-LINK_G6D356, BSSID: 30:b5:c2:f5:$$:56, capabilities: [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS], level: -86, frequency: 2452, timestamp: !!!653673417, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: cbtap998852211C:CF:7F:0A:AC:33, BSSID: 5e:cf:7f:0a:ac:91, capabilities: [ESS], level: -46, frequency: 2412, timestamp: 238653673402, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: Tech_D0008214, BSSID: 70:5a:9e:65:30:56, capabilities: [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS], level: -88, frequency: 2462, timestamp: 238653673422, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: Tech_D0018138, BSSID: 50:09:59:83:ee:05, capabilities: [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS], level: -91, frequency: 2437, timestamp: 238653673427, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm)]

and I wish to check and extract cbtap998852211C:CF:7F:0A:AC:33 and separate out cbtap as another string, 99885221 as another bcz its a dynamic 8 digit and the rest 1C:CF:7F:0A:AC:33 as another string.

and its BSSID number 5e:cf:7f:0a:ac:91 from above String array. So as to check I have done if(Arrays.asList(wifis).contains(confirmation)){ where confirmation is cbtap But how do I extract it and do the the above mentioned tasks.Please suggest the apprach.

Answer 1

When you break a String, you must use a key to find the first part. I assumed that tbtap is the key.

Note that the ip has 6 parts, not 5 as you wrote.

     String s = "[SSID: Stephen Joseph, BSSID: ##:a6:##:c0:21:##, capabilities: [WPA2-PSK-CCMP][WPS][ESS], level: -78, frequency: 2442, timestamp: 998653673499, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: TP-LINK_G6D356, BSSID: 30:b5:c2:f5:$$:56, capabilities: [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS], level: -86, frequency: 2452, timestamp: !!!653673417, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: cbtap998852211C:CF:7F:0A:AC:33, BSSID: 5e:cf:7f:0a:ac:91, capabilities: [ESS], level: -46, frequency: 2412, timestamp: 238653673402, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: Tech_D0008214, BSSID: 70:5a:9e:65:30:56, capabilities: [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS], level: -88, frequency: 2462, timestamp: 238653673422, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm), SSID: Tech_D0018138, BSSID: 50:09:59:83:ee:05, capabilities: [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS], level: -91, frequency: 2437, timestamp: 238653673427, hs2Info: <none>, distance: ?(cm), distanceSd: ?(cm)]";
     int idx = s.indexOf("cbtap"); // cbtap998852211C:CF:7F:0A:AC:33,
     if (idx != -1)
     {
        int idx2 = s.indexOf(',',idx);
        s = s.substring(idx,idx2);
        String cbtap = s.substring(0,5);
        idx = s.indexOf(':');
        String id = s.substring(5,idx-2);
        String ip = s.substring(idx-2);
        System.out.println(cbtap+" / "+id+" / "+ip);
     }