java 泛型 通配符(wildcard)边界(Bound)类型
作者:互联网
除了基础类型,都可以做为通配符的边界
List<? extends String >
List<? extends Comparable >
List<? extends int[] >
List<? extends Comparable<? super Long> >
List<? extends Class<? extends Number> >
List<? extends Enum<?> >
参考:
http://www.angelikalanger.com/GenericsFAQ/FAQSections/TypeArguments.html#Which%20types%20are%20permitted%20as%20wildcard%20bounds?
标签:www,java,边界,List,通配符,Bound,wildcard,20bounds 来源: https://blog.csdn.net/claroja/article/details/114155769