java split string by length
String[] strings = "Thequickbrownfoxjumps".split("(?<=\G.{4})"); // split all 4 chars
String[] strings = "Thequickbrownfoxjumps".split("(?<=\G.{100})"); // this would be all 100 chars
// -> ['Theq', 'uick', 'brow', 'nfox', 'jump', 's']