用迭代器多次.remove()时报错 Java.lang.IllegalStateException的原因

连续remove，第二个remove的已经被第一个remove掉了

 加continue可解决

   HashMap h1 = new HashMap();
        h1.put("userId", "1");
        HashMap h2 = new HashMap();
        h2.put("userId", "2");
        List<HashMap> hashMapList = new ArrayList<>();
        hashMapList.add(h1);
        hashMapList.add(h2);

        System.out.println("hashMapList:"+hashMapList);
        List<Integer> memberIdList = new ArrayList<>();
        memberIdList.add(new Integer(1));
        memberIdList.add(new Integer(3));
        System.out.println("memberIdList:"+memberIdList);
        Set<Integer> memberSet =new HashSet(memberIdList);

        Iterator<HashMap> hashMapOldIterator = hashMapList.iterator();
        while (hashMapOldIterator.hasNext()) {
            HashMap h = hashMapOldIterator.next();
            System.out.println("aaaa:"+h.entrySet());
            if (memberSet.contains( Integer.parseInt(h.get("userId").toString()))){
                hashMapOldIterator.remove();
                continue;
            }
            if (h.get("userId").toString().equals("1")){
                System.out.println("bbb:"+hashMapList);
                hashMapOldIterator.remove();
                continue;
            }
        }
        System.out.println("ccc:"+hashMapList);

最后

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