Java 从 ConcurrentHashMap 中删除特定项

Question

使用 remove() 方法可以吗？我读过一篇文章说同步没有被添加到 remove 方法中。如何从 ConcurrentHashMap 中正确删除特定项？

示例代码:

    ConcurrentHashMap<String,Integer> storage = new ConcurrentHashMap<String,Integer>();
    storage.put("First", 1);
    storage.put("Second", 2);
    storage.put("Third",3);


    //Is this the proper way of removing a specific item from a tread-safe collection?
    storage.remove("First");

    for (Entry<String, Integer> entry : storage.entrySet()) {
        String key = entry.getKey();
        Object value = entry.getValue();
        // ...
        System.out.println(key + " " + value);
    }

Answer 1

一个 Iterator 应该做的工作:

Iterator<Map.Entry<String, Integer>> iterator = storage.entrySet().iterator();
while(iterator.hasNext())
{
    Map.Entry<String, Integer> entry = iterator.next();
    if(entry.getKey().equals("First"))
    {
       iterator.remove();
    }
 }

引用: https://dzone.com/articles/removing-entries-hashmap