package?com.imooc; import?java.util.ArrayList; import?java.util.Collections; import?java.util.List; import?java.util.Random; public?class?StringSort?{ ?????List?<String>?one; ?????public?StringSort(){ ???? ?one=new?ArrayList<String>(); ?????} public?static?void?main(String[]?args)?{ //?TODO?Auto-generated?method?stub ???????/*?1創建完List<String>之后，往其中添加十條隨機字符串 ????????2每條字符串長度為10以內的隨機字符串 ????????3每條字符串都為隨機生成的字符，字符可以重復 ????????4每條隨機字符串不可重復*/ Random?A=new?Random(); ?List<String>?one=new?ArrayList<String>(); String?B="1234567890ABCDEFGHIGKLMNOPQRSTUVWXYZabcdefghigklmnopqrstuvwxyz"; String?string; for(int?i=0;i<10;i++){ ?StringBuilder?C=new?StringBuilder(); ?do{ ????????????????int?D=A.nextInt(B.length()-1); ????????????????int?E=A.nextInt(10); ????????????????for(int?ii=0;ii<E;ii++){ ???????????????? C.append(B.charAt(A.nextInt(D)));} ???????????????? string?=C.toString(); ???????????????? ?}while(one.contains(string)); ?System.out.println("成功添加第"+(i+1)+"個元素:"+string); ?????????one.add(string); ? } ?????????System.out.println("----------排序前------------"); ?????????for(String?one1:one){ ???????? ?System.out.println(one.indexOf(one1) ???????? ?+one1); ?????????} System.out.println("-----------排序后-----------------");? Collections.sort(one); for(String?one1:one){ ??????? ?System.out.println(one.indexOf(one1) ??????? ?+one1); ????????} ? }}請問關于這代碼有什么會出現異常Exception in thread "main" java.lang.IllegalArgumentException: bound must be positive at java.util.Random.nextInt(Random.java:388) at com.imooc.StringSort.main(StringSort.java:31)這是關于java第三季中6.5的練習。