多态的覆盖方法

Author: CPU-Code

.idea/compiler.xml

@@ -64,6 +64,8 @@
 - [x] [polymorphic4__多态转型异常](src/main/java/com/cpucode/java/polymorphic/polymorphic4.java)
 - [x] [polymorphic5__多态转型异常判断](src/main/java/com/cpucode/java/polymorphic/polymorphic5.java)
 - [x] [polymorphic6__接口多态的综合案例](src/main/java/com/cpucode/java/polymorphic/polymorphic6)
+- [x] [多态的覆盖方法](src/main/java/com/cpucode/java/polymorphic/OverrideTest.java)
+
 
 - [返回object](#面对对象)
 

objectTest/README.md

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_5">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
     <output url="file://$MODULE_DIR$/target/classes" />
     <output-test url="file://$MODULE_DIR$/target/test-classes" />
     <content url="file://$MODULE_DIR$">

objectTest/objectTest.iml

@@ -8,5 +8,20 @@
     <artifactId>objectTest</artifactId>
     <version>1.0-SNAPSHOT</version>
 
+    <build>
+        <plugins>
+            <!-- java编译插件 -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.2</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
 </project>

objectTest/pom.xml

@@ -1,19 +1,5 @@
-/*
- * @由于个人水平有限, 难免有些错误, 还请指点:  
- * @Author: cpu_code
- * @Date: 2020-09-13 16:47:12
- * @LastEditTime: 2020-09-13 17:37:44
- * @FilePath: \java\object\Abstract\abstract2\Main.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 com.cpucode.java.Abstract.abstract2;
 
-import object.Abstract.abstract2.Member;
-import object.Abstract.abstract2.QunZhu;
-
 import java.util.Scanner;
 import java.util.ArrayList;
 

objectTest/src/main/java/com/cpucode/java/Abstract/abstract2/Main.java

@@ -0,0 +1,39 @@
+package com.cpucode.java.polymorphic;
+
+/**
+ * @author : cpucode
+ * @date : 2021/12/21 15:46
+ * @github : https://github.com/CPU-Code
+ * @csdn : https://blog.csdn.net/qq_44226094
+ */
+public class OverrideTest {
+    public static void main(String[] args) {
+        Base b = new Derived();
+        b.f();
+        b.g();
+    }
+}
+
+class Base {
+    public Base() {
+        g();
+    }
+
+    public void f() {
+        System.out.println("Base f");
+    }
+
+    public void g() {
+        System.out.println("Base g");
+    }
+}
+
+class Derived extends Base {
+    public void f() {
+        System.out.println("Derived f()");
+    }
+
+    public void g() {
+        System.out.println("Derived g()");
+    }
+}

objectTest/src/main/java/com/cpucode/java/polymorphic/OverrideTest.java

@@ -0,0 +1,40 @@
+package com.cpucode.java.test.overrideTest;
+
+/**
+ * @author : cpucode
+ * @date : 2021/12/21 15:33
+ * @github : https://github.com/CPU-Code
+ * @csdn : https://blog.csdn.net/qq_44226094
+ */
+public class OverrideTest {
+    public static void main(String[] args) {
+        Base b = new Derived();
+        b.f();
+        b.g();
+    }
+}
+
+
+class Base {
+    public Base() {
+        g();
+    }
+
+    public void f() {
+        System.out.println("Base f");
+    }
+
+    public void g() {
+        System.out.println("Base g");
+    }
+}
+
+class Derived extends Base {
+    public void f() {
+        System.out.println("Derived f()");
+    }
+
+    public void g() {
+        System.out.println("Derived g()");
+    }
+}