Java - parse String and add Line break every 100 characters [duplicate]

Answer 1

There is no need to parse the String via regex, you can just split it.

String s = "your very long String";
String[] splited = new String[s.size() / 100 + 1];
for (int i = 0; i < splited.length(); i++) {
  splited[i] = s.subString(0, 100);
  s = s.subString(100);
}

EDIT

StringBuilder sb = new StringBuilder();
for(int i = 0; i< splited.size(); i++) {
  sb.append(splited[i]);
  sb.append("\n");
}
String stringWithNewLines = sb.toString();