ConcurrentModificationException and a HashMap_JAVA_编程开发_程序员俱乐部

class="lang-java prettyprint prettyprinted">monospace, sans-serif; white-space: inherit;">Iterator it = map.entrySet().iterator();while(it.hasNext()){Entry item = it.next();
   map.remove(item.getKey());}

这种方法会出现错误

?

正确的删除办法是

Iterator it = map.entrySet().iterator();

? ?while (it.hasNext())

? ?{

? ? ? Entry item = it.next();

? ? ? it.remove();

? ?}

?

?

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