How to split an apex string into smaller chunks?

498 Asked by ClaudineTippins in Salesforce , Asked on Mar 2, 2023

I have a requirement where I need to split a string into a list of substrings with size 2 that is for example,

String = 'ABCDEF J4' and I want the output as
List subStringList = {'AB', 'CD', 'EF','J4'}
I have tried it in javascript with the following :
var chunkStr = function(str, chunkLength) {
    return str.match(new RegExp('[\s\S]{1,' + +chunkLength + '}', 'g'));
}

I am not sure how to achieve the same in apex. Could someone please point me in the right direction.

Answered by Aalap prabhakaran

Assuming you want no whitespace in your result of apex string...

String s = 'ABCDEF J4';

s = s.deleteWhitespace();

List subStringList = new List();

for(Integer i=0; i{'AB', 'CD', 'EF', 'J4'}, subStringList);

How to split an apex string into smaller chunks?

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