String[] s = "fdsfsdfds".split("");

Stream<String> str = Stream.of(s);

str.forEach(d->System.out.print(d + " "));//编译器可以自动推断d的类型

 //output: f d s f s d f d s 

str.forEach(System.out::print);//方法引用,System.out::print等价于x -> System.out.println(x)
//output: fdsfsdfds

public class Text{
public static void main(String[] args)
{
Tests tsd = ()->"fdsadfsds"; //接口只能有一个函数
System.out.println(tsd.print());
//output: fdsadfsds
}
}
interface Tests{
public String print();
}