ConcurrentHashMap删除

ConcurrentHashMap可以使用不同的方法来删除元素。一种常见的方法是在遍历时进行修改或删除。可以使用forEach()方法遍历ConcurrentHashMap并在遍历过程中调用remove()方法来删除指定的元素。例如，可以这样写代码来删除键为"name"的元素：

ConcurrentHashMap<String, Object> concurrentHashMap = new ConcurrentHashMap<>();
concurrentHashMap.put("name", "婷婷");
concurrentHashMap.put("sex", "女");

concurrentHashMap.forEach((k, v) -> {
    if (k.equals("name")) {
        concurrentHashMap.remove("name");
        System.out.println("删除成功！");
    }
});

concurrentHashMap.forEach((k2, v2) -> {
    System.out.println(v2);
});

另一种常见的方法是使用迭代器来循环遍历删除元素。可以使用entrySet()方法获取ConcurrentHashMap的键值对集合，并使用迭代器遍历删除指定的元素。例如，可以这样写代码来删除键为"name"的元素：

for (Iterator<Map.Entry<String, Object>> it = concurrentHashMap.entrySet().iterator(); it.hasNext();) {
    Map.Entry<String, Object> item = it.next();
    String name = item.getKey();
    if (name.equals("name")) {
        it.remove();
    }
}

for (Map.Entry<String, Object> item : concurrentHashMap.entrySet()) {
    System.out.println(item.getKey());
}

这些方法都可以有效地从ConcurrentHashMap中删除指定的元素。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [并发容器线程安全应对之道-ConcurrentHashMap](https://blog.csdn.net/bxg_kyjgs/article/details/126265405)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [HashMap遍历时移除元素](https://blog.csdn.net/Clsrm/article/details/122564673)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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