The high-quality course website based on Java and MySQL is designed and developed on the basis of JSP, Servlet and Java Bean, using MySQL database and Tomcat server technology. This paper first ...
底层数组+链表实现，无论key还是value都不能为null，线程安全，实现线程安全的方式是在修改数据时锁住整个HashTable，效率低，ConcurrentHashMap做了相关优化 初始size为11，扩容：newsize = olesize2+1 计算index的方法：index = (hash & 0x7FFFFFFF) % tab.length HashMap 底层数组+链表 ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果