Java函数式接口：Supplier

package unit6;

import java.util.function.Supplier;

public class Stream9 {

public static void main(String[] args) {

// java.util.function.Supplier

// ???????public interface Supplier<T> {

// ???????????T get();

// ???????}

// 供给型接口：没有参数、只有返回值

Supplier supplier = ()->{return 100;};

Object o = supplier.get();

System.out.println(o);

}

}