java8

• Default Methods for Interfaces
• Lambda expressions
• Functional Interfaces
• Method and Constructor References
• Lambda Scopes
  • Accessing local variables
  • Accessing fields and static variables
  • Accessing Default Interface Methods
• Built-in Functional Interfaces
  • Predicates
  • Functions
  • Suppliers
  • Consumers
  • Comparators
• Optionals
• Streams
  • Filter
  • Sorted
  • Map
  • Match
  • Count
  • Reduce
• Parallel Streams
  • Sequential Sort
  • Parallel Sort
• Maps
• Date API
  • Clock
  • Timezones
  • LocalTime
  • LocalDate
  • LocalDateTime
• Annotations

ref

https://github.com/winterbe/java8-tutorial

https://howtodoinjava.com/java-8-tutorial/ 

java11

https://winterbe.com/posts/2018/09/24/java-11-tutorial/

函数式接口和lambda表达式

https://blog.csdn.net/u013041642/article/details/73521793

方法引用

https://www.cnblogs.com/xiaoxi/p/7099667.html