首先输入数字n，表示要输入多少个字符串。连续输入字符串

按长度为8拆分每个字符串后输出到新的字符串数组，长度不是8整数倍的字符串请在后面补数字0，空字符串不处理

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int count = 0;
    String[] strings = null;
    int index = 0;
    while (scanner.hasNext()){
        if(count == 0){
            count = scanner.nextInt();
            if(count <= 0 ){
                System.out.println("程序结束");
                return;
            }
            strings = new String[count];
        }else {
            String next = scanner.next();
            strings[index] = next;
            index++;
            if(index == count){
                break;
            }
        }
    }
    calc(strings);
}

private static void calc(String[] arr) {
    List<String> list = new ArrayList<>(arr.length);

    for (String s : arr) {
        if(s == null ||  "".equals(s)){
            continue;
        }
        if(s.length() < 8){
            list.add(s);
        }else {
            int count = s.length() / 8;
            if((s.length() % 8) != 0 ){
                count++;
            }
            for (int i = 0; i < count; i++) {
                String t = s.substring(i * 8 , Math.min(s.length(),(i + 1) * 8));
                list.add(t);
            }
        }

    }
    for (String s : list) {
       if(s.length() < 8){
           int zoreCount = 8 - s.length();
           for (int i = 0; i < zoreCount; i++) {
               s+="0";
           }
           System.out.println(s);
       }else {
           System.out.println(s);
       }
    }

}