身份证分组

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        scan.useDelimiter("
");
        String str = scan.next();   //接受的字符串，可能含有空格
        char c[] = str.toCharArray();
        char c1[] = new char[c.length];
        int j=0;
        for(int i=0;i<c.length;i++){
            if(c[i] != ' '){
                c1[j] = c[i];
                j++;
            }
        }
        String str1 = new String(c1).trim();//得到没有空格的字符串
        if(str1.length()<=6){
            System.out.println(str1);
        }
        if(str1.length()>6 && str1.length()<=14){
            String str2 = str1.substring(0, 6);
            String str3 = str1.substring(6, str1.length());
            System.out.println(str2 + " " + str3);
        }
        if(str1.length()>14){
            String str4 = str1.substring(0, 6);
            String str5 = str1.substring(6, 14);
            String str6 = str1.substring(14, str1.length());
            System.out.println(str4 + " " + str5 + " " + str6);
        }
    }
}