day09--继承的格式和基本使用

day09/src/com/inmind/extends01/Assistant.java

@@ -0,0 +1,8 @@
+package com.inmind.extends01;
+
+public class Assistant extends Employee {
+
+    public void help(){
+        System.out.println("助教在帮助学生");
+    }
+}

day09/src/com/inmind/extends01/BanZhuRen.java

@@ -0,0 +1,8 @@
+package com.inmind.extends01;
+
+public class BanZhuRen extends Employee {
+
+    public void manage(){
+        System.out.println("班主任在管理学生");
+    }
+}

day09/src/com/inmind/extends01/Demo01.java

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+package com.inmind.extends01;
+/*
+继承的格式和和基本使用
+public class Fu{
+}
+public class Zi extends Fu{
+}
+继承的特点：子类拥有父类的所有内容，除了被private和构造方法。
+继承的好处：实现多个类中相同内容的复用,子类可以实现各自的不同功能需求
+ */
+public class Demo01 {
+    public static void main(String[] args) {
+        //创建一个子类对象，老师对象
+        Teacher t = new Teacher();
+        t.name = "张三";
+        t.age = 35;
+        t.salary = 1.5;
+        t.work();
+        t.teach();
+        Assistant a = new Assistant();
+        a.help();
+    }
+}

day09/src/com/inmind/extends01/Employee.java

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+package com.inmind.extends01;
+
+public class Employee {
+    String name;
+    int age;
+    double salary;
+
+    public void work(){
+        System.out.println("员工工作了");
+    }
+}

day09/src/com/inmind/extends01/Teacher.java

@@ -0,0 +1,9 @@
+package com.inmind.extends01;
+
+public class Teacher extends Employee{
+    //默认无参构造，所有类都有构造方法
+
+    public void teach(){
+        System.out.println("老师在教学生学java");
+    }
+}