lambda7__Lambda写法

Lambda/lambda6.java

@@ -0,0 +1,64 @@
+/*
+ * @由于个人水平有限, 难免有些错误, 还请指点:  
+ * @Author: cpu_code
+ * @Date: 2020-09-15 19:41:33
+ * @LastEditTime: 2020-09-15 19:49:38
+ * @FilePath: \java\Lambda\lambda6.java
+ * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
+ * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
+ * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
+ * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
+ */
+package Lambda;
+
+import java.util.Arrays;
+import java.util.Comparator;
+
+public class lambda6 {
+    public static void main(String[] args){
+
+        // 本来年龄乱序的对象数组
+        Person[] array = {
+                new Person("cpucode", 22),
+                new Person("cpu", 21)
+        };
+
+        // 匿名内部类
+        Comparator<Person> comp = new Comparator<Person>() {
+            @Override
+            public int compare(Person o1, Person o2) {
+                return o1.getAge() - o2.getAge();
+            }
+        };
+
+        // // 第二个参数为排序规则，即Comparator接口实例
+        Arrays.sort(array, comp);
+
+        for(Person person: array){
+            System.out.println(person);
+        }
+    }
+}
+
+class Person{
+    private String name;
+    private int age;
+
+    public Person(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}
+
+/*
+com.company.Person@2f4d3709
+com.company.Person@4e50df2e
+*/

Lambda/lambda7.java

@@ -0,0 +1,53 @@
+/*
+ * @由于个人水平有限, 难免有些错误, 还请指点:  
+ * @Author: cpu_code
+ * @Date: 2020-09-15 19:48:16
+ * @LastEditTime: 2020-09-15 19:52:25
+ * @FilePath: \java\Lambda\lambda7.java
+ * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
+ * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
+ * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
+ * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
+ */
+package Lambda;
+
+public class lambda7 {    public static void main(String[] args){
+
+    // 本来年龄乱序的对象数组
+    Person[] array = {
+            new Person("cpucode", 22),
+            new Person("cpu", 21)
+    };
+
+    Arrays.sort(array, (Person a, Person b) -> {
+        return a.getAge() - b.getAge();
+    });
+
+    for (Person person : array) {
+        System.out.println(person);
+    }
+}
+}
+
+class Person{
+    private String name;
+    private int age;
+
+    public Person(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}
+
+/*
+com.company.Person@4e50df2e
+com.company.Person@1d81eb93
+*/

README.md

@@ -2,7 +2,7 @@
  * @由于个人水平有限, 难免有些错误, 还请指点:  
  * @Author: cpu_code
  * @Date: 2020-07-12 12:03:11
- * @LastEditTime: 2020-09-15 19:20:12
+ * @LastEditTime: 2020-09-15 19:48:06
  * @FilePath: \java\README.md
  * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
  * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
@@ -304,7 +304,8 @@ java编程基础 面向对象 javaAPI 集合 IO GUI JD8C 多线程 网络编程
 - [x] [lambda3__使用实现类](Lambda/lambda3.java)
 - [x] [lambda4__使用匿名内部类](Lambda/lambda4.java)
 - [x] [lambda5__Lambda标准格式的无参无返回](Lambda/lambda5.java)
-
+- [ ] [lambda6__Lambda的参数和返回值](Lambda/lambda6.java)
+- [ ] [lambda7__Lambda写法](Lambda/lambda7.java)
 
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