feat: Java 继承

niumoo · niumoo · commit d5dc3ebd7e3d · 2023-04-13T19:23:07.000+08:00
diff --git a/README.md b/README.md
@@ -36,13 +36,14 @@
 - [使用MyBatis Generator自动生成Model、Dao、Mapper相关代码](https://www.wdbyte.com/2017/11/develop/tool-mybatis-generator/)
 
 ## 🌿 Java 基础教程
-- [JDK、JRE、JVM 的区别](https://www.wdbyte.com/java/jdk-jre-jvm.html)
-- [Java 数据类型](https://www.wdbyte.com/java/data-type.html)
-- [Java 流程控制](https://www.wdbyte.com/java/flow-control.html)
-- [Java String 字符串](https://www.wdbyte.com/java/java-string.html)
-- [Java Array 数组](https://www.wdbyte.com/java/java-array.html)
-- [Java 多维数组](https://www.wdbyte.com/java/java-array-mul.html)
-- [Java StringBuilder](https://www.wdbyte.com/java/java-stringbuilder.html)
+- [JDK、JRE、JVM 的区别](https://www.wdbyte.com/java/jdk-jre-jvm/)
+- [Java 数据类型](https://www.wdbyte.com/java/data-type/)
+- [Java 流程控制](https://www.wdbyte.com/java/flow-control/)
+- [Java String 字符串](https://www.wdbyte.com/java/java-string/)
+- [Java Array 数组](https://www.wdbyte.com/java/java-array/)
+- [Java 多维数组](https://www.wdbyte.com/java/java-array-mul/)
+- [Java StringBuilder](https://www.wdbyte.com/java/java-stringbuilder/)
+- [Java 继承](https://www.wdbyte.com/java/extends/)
 
 ## 🌿 SpringBoot 2.x 教程
 
diff --git a/core-java-modules/core-java-base/src/main/java/com/wdbyte/oop/JavaExtends.java b/core-java-modules/core-java-base/src/main/java/com/wdbyte/oop/JavaExtends.java
@@ -0,0 +1,66 @@
+package com.wdbyte.oop;
+
+/**
+ * @author niulang
+ * @date 2023/03/31
+ */
+public class JavaExtends {
+    public static void main(String[] args) {
+        Student student = new Student();
+        printSleep(student);
+    }
+    public static void printSleep(Person person){
+        person.sleep();
+    }
+}
+
+class Person {
+    public void eat() {
+        System.out.println("吃饭");
+    }
+
+    public void sleep() {
+        System.out.println("睡觉");
+    }
+}
+
+class Student extends Person {
+
+    public Student() {
+        super();
+    }
+
+    public void study() {
+        System.out.println("学习");
+    }
+
+    @Override
+    public void sleep() {
+        System.out.println("上课时不能睡觉");
+    }
+}
+
+interface One {
+    public void print_geek();
+}
+
+interface Two {
+    public void print_for();
+}
+
+interface Three extends One, Two {
+    public void print_geek();
+}
+
+class Teach implements Three{
+
+    @Override
+    public void print_for() {
+
+    }
+
+    @Override
+    public void print_geek() {
+
+    }
+}
