Custom Diplay name Json in android - regex

Question

I'm parsing a json file like this :
JSONObject stationJson = array.optJSONObject(i);
Station s = new Station();
s.setName(stationJson.optString("name"));
s.setTimestamp(stationJson.optString("last_update"));
s.setNumber(stationJson.optInt("number"));
This is the json file :
{
"number": 123,
"contract_name" : "7500 - London",
"name": "nom station",
"address": "adresse indicative",
}
I would like to display just the "London" in the name section not the Number.
I found this Code Snippet but I don't know how to use it :
private String buildDisplayName(String name) {
String regexp = "[\\d\\s]*([a-zA-Z](.*)$)";
Pattern p = Pattern.compile(regexp);
Matcher m = p.matcher(name);
if (m.find()) {
return m.group();
}
return name;
}
Any help would be great!

Answer 1

If it's always the exact same format why not use substring so you still understand your own code. For example, use:
String test = stationJson.optString("name");
s.setName(test.substring(test.indexOf("-")+2));
This gets the string value from your name, 2 positions from the position of the hyphen ( the "-").
If you want to work with regex, that's great, but if you don't really know how it works, I wouldn't recommend it. This might give you an idea of what the code snippet you pasted is actually doing. And here is a tutorial about it.