2018年11月2日
转：Comparable vs Comparator in Java
摘要： Comparable vs Comparator in Java Java provides two interfaces to sort objects using data members of the class: Comparable Comparator Using Comparable 阅读全文
posted @ 2018-11-02 16:25 andychhr 阅读(276) 评论(0) 推荐(0)
What is the difference between List<? super T> and List<? extends T> ?
摘要： What is the difference between List<? super T> and List<? extends T> ? extends The wildcard declaration of List<? extends Number> foo3 means that any 阅读全文
posted @ 2018-11-02 11:27 andychhr 阅读(631) 评论(2) 推荐(0)