Set集合一个重要的特性就是元素不重复,而HashMap本身就是符合这一特性的。 集合的迭代器就是HashMap中keySet()的迭代器。 HashSet类需要理解的不多,看懂了HashMap这个类就没什么问题了。HashMap源...猜你喜欢Java集合类框架学习 4.3 —— HashMap(JDK1.8) 转载自 https://blog.csdn.net/u011392897/article...
System.out.println(value); //Iteration example Iterator<Integer> iterator = pairs.keySet().iterator(); while(iterator.hasNext()) { Integer key = iterator.next(); System.out.println("Key: "+ key +", Value: "+ pairs.get(key)); } //Remove example pairs.remove(3); System.out.println(...
KeySet() To be added (Inherited from AbstractMap) Merge(Object, Object, IBiFunction) (Inherited from HashMap) NewLinkedHashMap(Int32) Notify() Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) NotifyAll() Wakes up all threads that are ...