设计模式-组合模式

目录：https://blog.youkuaiyun.com/qq_52681418/article/details/114828850

设计模式-组合模式

在公司中有各个层级：总经理、经理、组长、普通员工，他们全都属于老板的员工，如下图形式：

1.首先创建一个员工类：

public class Employee {
    private String name;
    private List<Employee> subordinates;//员工下属

    public Employee(String name) {
        this.name = name;
    }

    //添加下属
    public void addSubordinate(Employee e){
        subordinates.add(e);
    }
    //移除下属
    public void deleteSubordinate(Employee e){
        subordinates.remove(e);
    }
}

形成关系：

public class Main {
    public static void main(String[] args) {
        Employee employee=new Employee("总经理");
        Employee employee1=new Employee("张经理");
        Employee employee2=new Employee("王经理");
        //为总经理添加下属
        employee.addSubordinate(employee1);
        employee.addSubordinate(employee2);
        
        Employee employee11 =new Employee("刘组长");
        Employee employee12 =new Employee("刘组长");
        Employee employee21 =new Employee("刘组长");
        Employee employee22 =new Employee("刘组长");
        
        employee1.addSubordinate(employee11);//为张经理添加下属
        employee1.addSubordinate(employee12);
        employee2.addSubordinate(employee21);//为王经理添加下属
        employee2.addSubordinate(employee22);
        
    }
}