package Interview;
import com.sun.javafx.image.BytePixelSetter;
import jdk.internal.util.xml.impl.Input;
import jdk.nashorn.internal.ir.CaseNode;
import java.util.Scanner;
/**
* @author 关根普
* @create 2021-02-19 10:28
*/
public class Demo01 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入8位设备编号");
String code = scanner.next();
Rule rule = new Rule();
System.out.println(rule.a(code));
scanner.close();
}
}
class Rule{
public String a(String code){
String b ="";
String c ="";
for(int i =0;i<4;i++){
b+=code.charAt(i);
}
switch (b){
case "3251":
System.out.println("南京市");
break;
case "3252":
System.out.println("无锡市");
break;
case "3253":
System.out.println("徐州市");
break;
case "3254":
System.out.println("常州市");
break;
case "3255": for(int i =4;i<6;i++){
b+=code.charAt(i);}
if( b.equals("325508")){
System.out.println("昆山市");
break;}
System.out.println("苏州市（不含昆山）");
break;
case "3256":
System.out.println("南通市");
break;
case "3257":
System.out.println("连云港");
break;
case "3258":
System.out.println("淮安市");
break;
case "3259":
System.out.println("盐城市");
break;
case "3260":
System.out.println("扬州市");
break;
case "3261":
System.out.println("镇江市");
break;
case "3262":for(int i =4;i<6;i++){
b+=code.charAt(i);}
if( b.equals("326205")){
System.out.println("泰兴市");
break;}
System.out.println("泰州市（不含泰兴）");
break;
case "3263":for(int i =4;i<6;i++){
b+=code.charAt(i);}
if( b.equals("326303")){
System.out.println("沐阳市");
break;}
System.out.println("宿迁市（不含沐阳）");
break;
default:
System.out.println("输入编号有误，请重新输入");
}
return(c);}
}
The problem encountered: How to set the length of the input part to be exactly 8, so that "the input number is not standardized" will be output if it is insufficient or exceeded?