类名作为形式参数传递

Student.java

public class Student {
    public void study()
    {
        System.out.println("好好学习，天天向上");
    }

}

 

Teacher.java

public class Teacher {
    public void test(Student s)
    {
        s.study();
    }

}

 

Test.java

//类名作为形式参数 :其实这里需要的是该类对象
public class Test {
    public static void main(String[] args) {
        //创建老师对象
        Teacher t=new Teacher();
        //创建学生对象
        Student s=new Student();
        t.test(s);
    }

}