类名作为形参和返回值

1.1 类名作为方法的形式参数
1.1.1 案例代码十四:

package com.itheima_10;

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

package com.itheima_10;

public class Teacher {
public void test(Student s) {//接收传递过来的Student对象的地址值
s.study();                  
}
}

package com.itheima_10;

//需求： 调用Teacher的test方法

//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) {
Teacher t = new Teacher();
Student s = new Student();
t.test(s);
}
}

1.2 类名作为返回值案例
1.2.1 案例代码十五:

package com.itheima_11;

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

package com.itheima_11;

public class Teacher {
public Student getStudent() {
Student s = new Student();
return s;//返回的是Student对象的地址值
}
}

package com.itheima_11;

//需求： 通过Teacher得到Student对象，然后调用Student类的方法
//如果方法的返回值是类名：其实返回的是该类的对象
public class Test {
public static void main(String[] args) {
Teacher t = new Teacher();
Student s = t.getStudent();
s.study();
}
}

转载于:https://blog.51cto.com/13587708/2084080