類名作為形式參數傳遞

Student.java

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

}

 

Teacher.java

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

}

 

Test.java

//類名作為形式參數 :其實這里需要的是該類對象
public class Test {
    public static void main(String[] args) {
        //創建老師對象
        Teacher t=new Teacher();
        //創建學生對象
        Student s=new Student();
        t.test(s);
    }

}