Complex Mapping :-Help Required

Question

Hi All,
I have a scenario XI--IDoc.
Sender structure is having one field as Description which will carry some informatiom.I have to read the Summary Field and if I get XAA1:686,XAA2:767 or XAA3:876 like this  inside this  inside this field than I have substring  and take those value individually than we have to map it accordingly.
You can consider all these value will come separated by ,(comma) and based of the sbustring we have to map it.
Thanks,
Rakhi

Answer 1

1) Pattern p = Pattern.compile("\\b([X][A-Z]{2}[0-9][:][0-9]{3})\\b");
we made a regular expression here and compiled it and then we make a object of class Matcher to match this compiled regex with our string
Matcher m = p.matcher(str);
//then we traverse through the results given to us my this matcher in an array form that is a array constituted by the different values that match this regex.....we traverse this array (m.find()) until this condition is true.....
then we add the result into the display queue.
while (m.find())
    String s = m.group(1);
    result.addValue(s);
(\\b is actually \b to include this \(escape character) i had used two \\
this is the real regex
\b([X][A-Z]{2}[0-9][:][0-9]{3})\b
\b means a seprator between words it can be anything tab or whitespace or new line
() we use these brackets to mark a word or a unit here this XAA8:456 is a unit so we put the reg ex for this inside braces
[X] single value mentioned means that it searches for only the single X character
the very next [A-Z]{2} means that it searches for any character in range A-Z and this rule searches for combination of two letters that follow this rule it means that it searches for two characters together following this i.e adjacent like DF, GY if you think that you want to further drill down your pattern and you will always have AA you can replace this [A-Z]{2} by [A]{2} so it searches for XAA
now the next thing should be a digit  so we have 0-9 if you dont specify {3} or any number in curly braces it assumes that you are searching for a single character
then [0-9]{3} digits in the end.....
use this site if you want to learn regex you can test your regex here
http://regexr.com/#
working on your next req