"Java实践：学校员工角色与行为模拟及类图实现"
以下是Java代码和类图：
```java
//员工类
public abstract class Employee {
public abstract void action();
}
//助教类
public class Assistant extends Employee {
@Override
public void action() {
System.out.println("正在协助老师批作业...");
}
}
//收银员类
public class Cashier extends Employee {
@Override
public void action() {
System.out.println("正在餐馆打工收银...");
}
}
//学校类
public class School {
public void enter(Employee employee) {
employee.action();
}
public void run() {
Employee xiaoming = new Cashier();
Employee xiaodong = new Assistant();
enter(xiaoming);
enter(xiaodong);
}
}
//测试类
public class Test {
public static void main(String[] args) {
School school = new School();
school.run();
}
}
```
类图如下：
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