day09--继承练习

day09/src/com/inmind/extends_this_super05/Clerk.java

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+package com.inmind.extends_this_super05;
+//定义职员Clerk类继承Employee类，包含属性：经理，重写show方法，在父类实现基础之上增加展示经理信息。
+public class Clerk extends Employee{
+    private Manager manager;
+
+    public Clerk() {
+        super();
+    }
+    public Clerk(String name, int id, String department) {
+        super(name, id, department);
+    }
+
+    public Clerk(String name, int id, String department,Manager manager) {
+        super(name, id, department);
+        this.manager = manager;
+    }
+
+    public Manager getManager() {
+        return manager;
+    }
+
+    public void setManager(Manager manager) {
+        this.manager = manager;
+    }
+
+    //重写show方法，在父类实现基础之上增加展示经理信息
+    @Override
+    public void show() {
+        super.show();//沿袭
+        System.out.println("我的经理是："+this.manager.getName());
+    }
+}

day09/src/com/inmind/extends_this_super05/Employee.java

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+package com.inmind.extends_this_super05;
+//定义员工Employee类。包含属性：姓名，工号，部门，成员方法show，方法内展示员工信息。
+public class Employee {
+    private String name;
+    private int id;
+    private String department;
+
+    public Employee() {
+    }
+
+    public Employee(String name, int id, String department) {
+        this.name = name;
+        this.id = id;
+        this.department = department;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getDepartment() {
+        return department;
+    }
+
+    public void setDepartment(String department) {
+        this.department = department;
+    }
+
+    public void show(){
+        System.out.println("我叫"+this.name+"，我的工号是"+this.id+"，我是"+this.department+"部门的");
+    }
+}

day09/src/com/inmind/extends_this_super05/Manager.java

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+package com.inmind.extends_this_super05;
+
+import java.util.ArrayList;
+
+//定义经理Manager类继承Employee类，包含属性：职员，重写show方法，在父类实现基础之上增加展示职员信息。
+public class Manager extends Employee{
+    //职员们
+    private ArrayList<Clerk> clerkList;
+
+    public Manager() {
+        super();
+    }
+
+    public Manager(String name, int id, String department) {
+        super(name, id, department);
+    }
+
+    //对经理的独有属性进行操作
+    public ArrayList<Clerk> getClerkList() {
+        return clerkList;
+    }
+
+    public void setClerkList(ArrayList<Clerk> clerkList) {
+        this.clerkList = clerkList;
+    }
+
+    //重写show方法，在父类实现基础之上增加展示职员信息。
+
+    @Override
+    public void show() {
+        super.show();//沿袭父类功能
+        //展示自己的职员们
+        System.out.println("我的下属有：");
+        for (int i = 0; i < clerkList.size(); i++) {
+            Clerk clerk = clerkList.get(i);
+            System.out.println(clerk.getName());
+        }
+    }
+}

day09/src/com/inmind/extends_this_super05/Test09.java

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+package com.inmind.extends_this_super05;
+
+import java.util.ArrayList;
+
+/*
+编写步骤：
+1. 定义员工Employee类。包含属性：姓名，工号，部门，成员方法show，方法内展示员工信息。
+2. 定义经理Manager类继承Employee类，包含属性：职员，重写show方法，在父类实现基础之上增加展示职员信息。
+3. 定义职员Clerk类继承Employee类，包含属性：经理，重写show方法，在父类实现基础之上增加展示经理信息。
+ */
+public class Test09 {
+    public static void main(String[] args) {
+        //创建一个经理
+        Manager manager = new Manager("张三", 1, "开发部");
+        //招3个员工
+        Clerk clerk1 = new Clerk("李四", 10, "开发部",manager);
+        Clerk clerk2 = new Clerk("王五", 11, "开发部",manager);
+        Clerk clerk3 = new Clerk("赵六", 12, "开发部",manager);
+
+        /*clerk1.setManager(manager);
+        clerk2.setManager(manager);
+        clerk3.setManager(manager);*/
+
+        //创建一个集合，保存当前3个员工，隶属于经理管理
+        ArrayList<Clerk> list = new ArrayList<>();
+        list.add(clerk1);
+        list.add(clerk2);
+        list.add(clerk3);
+        manager.setClerkList(list);
+
+        //经理展示下自己的下属
+        manager.show();
+        //职员介绍下自己的经理
+        clerk1.show();
+    }
+}