HashMap 是基于键散列的映射。它支持 O(1)get / put 操作。键必须具有hashCode()和equals()一致实现才能使其工作。 LinkedHashMap 与 HashMap 非常相似,但它增加了对添加(或访问)项目的顺序的认知,因此迭代顺序与插入顺序(或访问顺序,取决于构造参数)相同。
public int compare(Object obj1, Object obj2) boolean equals(Object obj) ImplementationComparable interface is implemented by the class whose objects are to be compared.Comparator interface is implemented by a sperate class instead to the class whose objects are to be compared. ...
That's all on thedifference between URI, URL, and URN. It’s good to know how much difference they are though you mostly need to deal with URL. OtherInterview questionsfrom Java67 Blog Difference between ServletContext and ServletConfig in JSP Difference between abstract class and interface in...