没显示错误但是运行一直错误Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:

Question

public class Pukes {

 public String color;

 public String number;

 public List<Pukes> pukes;

  public List<String>colors;

  public List<String>numbers;

  public Pukes(String color,String number){

 this.color=color;

 this.number=number;

  }

  public Pukes(){

 //this.pukes=new ArrayList<>();

 this.colors=new ArrayList<String>();

 this.numbers=new ArrayList<String>();

}

  

 public void colorsAdd(){

 colors.add("黑桃");

 colors.add("红桃");

 colors.add("梅花");

 colors.add("方片");

String dd=colors.get(2);

System.out.println(dd);

  }

  public void numbersAdd(){

numbers=Arrays.asList("2","3","4","5","6","7","8","9","J","Q","K","A");

 String cm= numbers.get(0);

 System.out.println(cm);

  }

 public void testPukes(){

List<Pukes> pukes=new ArrayList<>();

   

 for(int i=0;i<52;i++){

 

 String cm=null;

 String dd=null;

 int cm1=i%13;

cm=numbers.get(cm1);

         int cm2=i%4;

 dd=colors.get(cm2);

Pukes temp=new Pukes("dd","cm");

pukes.add(temp);

 }

 for(Pukes pu:pukes){

 

 System.out.println(pu.color+pu.number);

 }

、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 12

at java.util.Arrays$ArrayList.get(Arrays.java:3841)

at com.pkyx.Pukes.testPukes(Pukes.java:44)

at com.pkyx.Pukes.main(Pukes.java:64)

。。。。。。。。。。。。。。。。。。。。。。。。。。

cm=numbers.get(cm1);这里

Answer 1

因为你的numbers的下标是从0到11，而计算的结果是12，所以会报错