teacher.java

java入门经典教程 java入门经典教程 java入门经典教程

// 例 2.2.1   Teacher.java
class Person
{
    String name;
    int age;
    public void getInfo()
{
        System.out.print("This person's name is "+name+", age is "+age);
    }
}
class Teacher extends Person    // 继承了Person类
{   
public void teach()  // 比Person类多了一个行为
{       
        System.out.println(", is a teacher!");
    }
    public static void main(String args[])
{
        Person p = new Person();   // 创建一个Person类的对象
        p.name = "David";
        p.age = 40;
        p.getInfo();
        System.out.println();    //   换行

        Teacher t = new Teacher();  // 创建一个Teacher类的对象
        t.name = "Lisa";
        t.age = 35;
        t.getInfo();
        t.teach();   
    }
}