试试这个： import java.util.*; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String str = sc.nextLine(); int minStrLen = str.length()%8; for (int i=0; i<(str.length()-minStrLen)/8; i++){ System.out.println(str.substring(i*8,i*8+8)); } System.out.print(str.substring(str.length()-minStrLen, str.length())); for (int i=0; i<(8-minStrLen)%8; i++) { System.out.print("0"); } } }