Question

I have some string type data in my database table like as D-101 and D-102.
I want to get automatically next data in front end (a JSF web application) to send to database which is D-103.

For this I want to get only int data from string.

How can I do this?

Answer 1

final Pattern lastIntPattern = Pattern.compile("[^0-9]+([0-9]+)$");
            String input = D101;
            Matcher matcher = lastIntPattern.matcher(input);
            if (matcher.find()) {
                String someNumberStr = matcher.group(1);
                int lastNumberInt = Integer.parseInt(someNumberStr);
                System.out.println("Test int output - " + lastNumberInt);
                inputList.add(lastNumberInt);
            }

then compare max value

int currentBranchCode = 0;
        for (Integer CCS : companyArrayList) {
            if (currentBranchCode <= CCS) {
                currentBranchCode = CCS;
            }
        }

and then

currentBranchCode =currentBranchCode +1;
String codegenerate="D"+currentBranchCode;

you must try it.