Java while 循环 拨号

import java.util.Scanner;

public class fangfa {
    public static void main(String[]args){
//定义每个人的快捷拨号键      
        int father=1; 
        int mather = 2;
        int gandfather = 3;
        int gandmather =4;
用while 循环以便拨号错误后 重新拨号
       while (true){
           System.out.println("你要打给谁");
         
           Scanner sc =new Scanner(System.in);
           int bohao=sc.nextInt();
//用if 判断号码对应的人
           if (bohao==1){
               System.out.println("正在拨通爸爸的号码");
               break;
           }if (bohao==2){
               System.out.println("拨通妈妈的号码");
               break;
           }if (bohao==3){
               System.out.println("拨通爷爷的号码");
               break;
           }if (bohao==4){
               System.out.println("拨通奶奶的号码");
               break;
           }else{
               System.out.println("你输入的号码有误");
           }   }
        System.out.println("正在呼叫");

    }

}