lambda表达式新特性--方法引用

1.对象::实例方法名
2.类名::静态方法名
3.类名::实例方法名

public class TestInstanceReference {
 
     public static void main(String[] args) {
 
         TestInstanceReference test = new TestInstanceReference();
         User user = new User("欧阳峰",32);
         Supplier<String> supplier = () -> user.getName();
         System.out.println("Lambda表达式输出结果：" + supplier.get());
 
         Supplier<String> supplier2 = user::getName;
         System.out.println("实例方法引用输出结果：" + supplier2.get());
     }
 }