I have a large string that contains fixed value fields, this group of fields can repeat from 0 to 40 times. I would like to parse this list into an arraylist but I am not sure of the best way to do this?
The string data is as follows,
CountryCode = 2 character
StateProv = 7 characters
PostalCode = 10 characters
BuildingNum = 5 characters
There is no delimiter the pattern just repeats
any suggestion?
I'd probably just read repeated substrings:
private static final int PATTERN_LENGTH = 24;
....
List<Location> list = new ArrayList<Location>();
if (text.length() % PATTERN_LENGTH != 0)
{
// throw an exception of some description; you haven't got valid data
}
for (int start = 0; start < text.length(); start += PATTERN_LENGTH)
{
list.add(Location.parse(text.substring(start, start + PATTERN_LENGTH));
}
(Or perform the parsing in the boody of the loop, or whatever... the main point is you've got the substring.)
ideone.com so that it could be handy for further reference.unable to understand this example here.
if (text.length() % PATTERN_LENGTH != 0) and finally why a substring in final part.I tried this using a character array. I am sure it can be optimized and I would like to see what changes you could apply to make it faster. Here is my test:
public class Test {
public static String bigString = "USARIZONA85123-123477777USWASHING78987-458711111USCOLORAD11111-111133333";
public List<String> getValues() {
List<String> seperatedValues = new ArrayList<String>();
char[] bigStringArray = bigString.toCharArray();
char[] temp = new char[24];
int j = 0;
for (int i=1; i < bigStringArray.length+1; i++) {
temp[j] = bigStringArray[i-1];
j++;
if (i%24 == 0) {
seperatedValues.add(String.valueOf(temp));
temp = new char[24];
j = 0;
}
}
return seperatedValues;
}
public static void main(String[] args) {
Test test = new Test();
System.out.println(test.getValues());
}
}
