随机生成车牌号码解决出现不符合规则的车牌号

之前在网上找到的随机生成车牌号的代码,结果京Z 津Z ... 这种代码都给我出来了,都不考虑时效性的,

所以自己编写了一串代码 , 代码不难,但是自己编写着实费了一段时间,所以现在发布出来解救同胞

import java.util.Random;
import java.util.regex.Pattern;
public class AutoCar {
   String[] a = {
           "京A","京C","京E","京F","京H","京G","京B",
           "津A","津B", "津C", "津E",
           "沪A", "沪B", "沪D", "沪C",
           "渝A", "渝B", "渝C", "渝G", "渝H",
           "冀A", "冀B", "冀C", "冀D", "冀E", "冀F", "冀G", "冀H", "冀J", "冀R", "冀T",
           "豫A", "豫B", "豫C", "豫D", "豫E", "豫F","豫G","豫H","豫J","豫K","豫L","豫M","豫N","豫P","豫Q","豫R","豫S","豫U"
           ,"云A", "云C", "云D", "云E", "云F", "云G","云H","云J","云K","云L","云M","云N","云P","云Q","云R ","云S",
           "辽A", "辽B", "辽C", "辽D", "辽E", "辽F","辽G","辽H","辽J","辽K","辽L","辽M","辽N","辽P","辽V",
           "黑A", "黑B", "黑C", "黑D", "黑E", "黑F","黑G","黑H","黑J","黑K","黑L","黑M","黑N","黑P","黑R",
           "湘A", "湘B", "湘C", "湘D", "湘E", "湘F","湘G","湘H","湘J","湘K","湘L","湘M","湘N","湘U","湘S",
           "皖A", "皖B", "皖C", "皖D", "皖E", "皖F","皖G","皖H","皖J","皖K","皖L","皖M","皖N","皖P","皖Q","皖R","皖S",
           "鲁A", "鲁B", "鲁C", "鲁D", "鲁E", "鲁F","鲁G","鲁H","鲁J","鲁K","鲁L","鲁M","鲁N","鲁P","鲁Q","鲁R","鲁S","鲁U","鲁V","鲁Y",
           "新A", "新B", "新C", "新D", "新E", "新F","新G","新H","新J","新K","新L","新M","新N","新P","新Q","新R",
           "苏A", "苏B", "苏C", "苏D", "苏E", "苏F","苏G","苏H","苏J","苏K","苏L","苏M","苏N",
           "浙A", "浙B", "浙C", "浙D", "浙E", "浙F","浙G","浙H","浙J","浙K ","浙L",
           "赣A","赣B","赣C","赣D","赣E","赣F","赣G","赣H","赣J","赣K","赣L","赣M",
           "鄂A","鄂B","鄂C","鄂D","鄂E","鄂F","鄂G","鄂H","鄂J","鄂K" ,"鄂L","鄂M","鄂N","鄂P","鄂Q","鄂R","鄂S",
           "桂A","桂B","桂C","桂D","桂E","桂F","桂G","桂H","桂J","桂K","桂L","桂M","桂N","桂P" ,"桂R",
           "甘A","甘B","甘C","甘D","甘E","甘F","甘G","甘H","甘J","甘K","甘L","甘M" ,"甘N","甘P",
           "晋A" ,"晋B","晋C","晋D","晋E","晋F","晋H","晋J","晋K","晋L","晋M",
           "蒙A","蒙B","蒙C","蒙D","蒙E","蒙F","蒙G","蒙H","蒙J","蒙K","蒙L","蒙M",
           "陕A","陕B","陕C","陕D","陕E","陕F","陕G","陕H","陕J","陕K","陕U","陕V",
           "吉A","吉B","吉C","吉D","吉E","吉F","吉G","吉H","吉J",
           "闽A","闽B","闽C","闽D","闽E","闽F" ,"闽G","闽H","闽J","闽K",
           "贵A","贵B" ,"贵C","贵D","贵E" ,"贵F","贵G","贵H","贵J",
           "粤A","粤B","粤C","粤D","粤E","粤F","粤G","粤H","粤J","粤K","粤L","粤M","粤N","粤P","粤Q","粤R","粤S","粤T","粤U","粤V","粤W","粤X","粤Y","粤Z",
           "青A","青B","青C","青D","青E","青F","青G","青H",
           "藏A","藏B","藏C","藏D","藏E","藏F","藏G","藏H" ,"藏J",
           "川A","川B","川C","川D","川E","川F","川H","川J","川K","川L","川M","川Q","川R","川S","川T","川U","川V","川W","川X","川Y","川Z",
           "宁A","宁B","宁C","宁D",
           "琼A","琼B","琼C","琼D","琼E"
   };
   String[] b = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };

/**
   * 随机生
   * @Description:
   * @return

* @date 2018年9月4日下午5:27:45
   */
   public String car(){
       int count = 0;
       String carNo = "";
       while (count < 5) {
           Random random = new Random();
           String str2 = b[random.nextInt(26)];
           int num = random.nextInt(10);
           int j = 0;
           if (count > 2) {
               for (int i = 0; i < carNo.length(); i++) {
                   char c = carNo.charAt(i);
                   if ((c >= 'A' && c <= 'Z')) {
                       j++;
                   }
               }
           }
           if (j < 2) {
               // 字母与数字的概率相同
               if (random.nextBoolean()) {
                   carNo += num;
               } else {
                   carNo += str2;
               }
               count++;
            } else {
               carNo += num;
               count++;
           }
       }

Random random1 = new Random();
       int num1 = random1.nextInt(31);
       String plate1 = a[num1] + carNo;
       return plate1;
   }
   public static void main(String[] args) {
       AutoCar autoCar = new AutoCar();

           System.out.println(autoCar.car());

   }
}

注:此代码会偶尔生成四个字母的车牌,这种不符合规范, 特此加上正则 String phalte = "^.*[A-Z]{3}.*$";

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