//https://www.bilibili.com/video/BV18b411t7Nc?p=127

package bzhan;/**

* @Classname FamilyAccountRecord

* @Description TODO

* @Date 2021/1/27 15:13

* @Created by wangxutao

*/

import com.sun.xml.internal.ws.addressing.WsaTubeHelperImpl;

import jdk.nashorn.internal.ir.WhileNode;

import sun.text.normalizer.Utility;

import javax.activation.MailcapCommandMap;

import javax.rmi.CORBA.Util;

import java.util.*;

class readchar{

static char readchar_fromBoard(){

char ch='a';

while (true) {

Scanner sc=new Scanner(System.in);

String c=sc.nextLine();

if (c.length()!= 1) {

System.out.println("wrong input,1 char please !\n ");

}

else {

ch = c.charAt(0);

break;}

}

return ch;

}

}

public class FamilyAccountRecord {

public static void main(String[] args) {

boolean isflag = true;

while (isflag) {

System.out.println("**********家庭收入说明*********");

System.out.println(" 1收支明细");

System.out.println(" 2点击收入");

System.out.println(" 3等级支出");

System.out.println(" 4退 出\n");

System.out.println("请输入选择1-4");

char c = readchar.readchar_fromBoard();

if (c!='1'&&c!='3'&&c!='2'&&c!='4') {

System.out.println("bad select,select again");

}else {

break;

}

}

}}