键盘输入字符串并将其转为字符数组

import java.util.Scanner;public class MoveCode {    public static void main(String[] args) {        // TODO Auto-generated method stub        Scanner cin=new Scanner(System.in);        Scanner sc=new Scanner(System.in);        String mingwen;        String p,result="";        int k,num;        char b[];        System.out.println("                              移位密码");        System.out.println("请输入明文\n");        mingwen=cin.nextLine();        System.out.println("请输入需要几位：");        num = sc.nextInt();        for(int i=0;i<mingwen.length();i++)        {            b=mingwen.toCharArray();            k= (int)b[i]+num;            result =result+(char)k;        }        System.out.print("result is:"+result);    }}