1.自定义函数式接口  MyFun
 
   传入一个参数    返回一个参数
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" alt="" />
 
2.定义方法 
 
  传入一个参数 n  并将自定义函数式接口MyFun   也作为参数 
 
3.在定义的方法中调用该函数式的getValue()方法    传入一个参数 n
 
 
4.main方法调用    对100  做加减乘除
(可以理解为Lambda表达式是对函数式接口的具体实现)

结果
aaarticlea/png;base64,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" alt="" />
 
 package com.wf.zhang.java8.function;

 @FunctionalInterface
public interface MyFun { public Integer getValue(Integer num); }

MyFun

 package com.wf.zhang.java8.function;

 public class Test {

     public static void main(String[] args) {

         Integer num1 = operation(100, t -> t * t);
Integer num2 = operation(100, t -> t - 10);
Integer num3 = operation(100, t -> t / 5);
Integer num4 = operation(100, t -> t + 88);
System.out.println(num1);
System.out.println(num2);
System.out.println(num3);
System.out.println(num4);
} //定义方法 将自定义函数接口作为参数
public static Integer operation(int n, MyFun mf) {
return mf.getValue(n);
}
}

Test

 
 

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