Java 中的长字符串达到最大长度时将拆分为行

Question

String[] string = {"Terms of service are the legal agreements between a service provider and a person who wants to use that service.", "The person must agree to abide by the terms of service in order to use the offered service."};

Anyone knows how to make a string element in a string array above split into new lines when it reached the maximum length which is, let say 20.

Answer 1

You can use Stream#flatMap along with String#split .

int maxLen = 20;
String[] res = Arrays.stream(arr).flatMap(s -> 
     Arrays.stream(s.split("(?<=\\G.{" + maxLen + "})"))).toArray(String[]::new);
// Separate each element based on the maximum length 
System.out.println(Arrays.toString(res));