java.lang.IllegalStateException: Duplicate key

java.lang.IllegalStateException: Duplicate key异常是指在使用Java编程语言时，出现了重复键的异常。重复键的意思是在使用键值对的数据结构时，键的值不能重复，否则会引发该异常。这个异常通常是由于在使用集合类时，向一个已经存在的键中插入了相同的键值对所导致的。具体来说，这个异常可能是由于使用了类似于HashMap或LinkedHashMap等可以存储键值对的集合类，并且向这个集合中插入了重复的键值对。如果在代码中出现了这个异常，可以通过检查代码逻辑，确保没有重复插入相同的键值对或者确保使用的集合类支持键的唯一性来解决这个问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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