一、Lambda 表达式
(parameters) -> expression 或 (parameters) ->{ statements; }
二、方法引用
1、sort排序
List<String> sports = ["Tennis","Basketball","Volleyball","Football"];
Collections.sort(names, (s1, s2) -> s1.compareTo(s2));
System.out.println(sports);
//结果:["Basketball","Football","Tennis","Volleyball"]
三、默认方法
四、新工具
五、Stream API
六、Date Time API
七、Optional 类
八、Nashorn, JavaScript 引擎
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