Question

I have a serial no contain both characters and numbers, something like ‘A1B2000C‘, I want to generate next serial no by increasing number part +1. The next serial no will be A1B2001C. Is there any way to archieve it?

Answer 1

Not in one line, but…

String input = "A1B2000C";
String number = input.replaceAll(".*(?<=\\D)(\\d+)\\D*", "$1");
int next = Integer.parseInt(number);
next++;
String ouput = input.replaceAll("(.*)(?<=\\D)\\d+(\\D*)", "$1" + next + "$2");
System.out.println(ouput);

output:

A1B2001C

Actually, it can be done in one line!

String ouput = input.replaceAll("(.*)\\d+(\\D*)", "$1" + (Integer.parseInt(input.replaceAll(".*(\\d+)\\D*", "$1") + 1) "$2");

But legibility suffers