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

Answer 1

You could do something like so:

String str = "....";
String parsedStr = str.replaceAll("(.{100})", "$1\n");

This will replace every 100 characters with the same 100 characters and add a new line at the end.

The (.{100}) will capture a group of 100 characters. The $1 in the second will put the content of the group. The \n will be then appended to the 100 characters which have been just matched.