ConcurrentModificationException异常

您可以使用迭代器：

for (Iterator<Entry<String, BigDecimal>> it = testBene.entrySet().iterator(); it.hasNext();) {    Entry<String, BigDecimal> beneKeySet = it.next();    if (testDly.containsKey(beneKeySet.getKey())) {        for (Entry<String, BigDecimal> dlyKeySet : testDly.entrySet()) { if ((dlyKeySet.getKey() == beneKeySet.getKey()) && dlyKeySet.getValue() == beneKeySet.getValue()) {     it.remove(); }        }    }}