JAVA do while 问题

import java.util.Scanner;
public class Demo6{
public static void main(String[] args){
char n=0;
int answer;
Scanner a=new Scanner (System.in);
System.out.println("1:选择1");
System.out.println("2:选择2");
System.out.println("3:选择3");
System.out.println("4:选择4");
System.out.println("5:选择5");

do{
System.out.println("请输入选择:");
answer=a.nextInt();
switch(answer){
case 1:
System.out.println("选择1");
break;
case 2:
System.out.println("选择2");
break;
case 3:
System.out.println("选择3");
break;
case 4:
System.out.println("选择4");
break;
case 5:
System.out.println("选择5");
break;
default:
System.out.println("输入非法");
break;
}
}while(answer<=5&&answer>=1);
}
}

是要这种效果吗？能简单就简单```呵呵`