java——抽象类的使用

/**
 * Created by xabcd on 2019/2/16.
 */
abstract class java_chouxiang1
{String name;
    int age;
    String occupation;
    //声明一种抽象方法talk（）
    public java_chouxiang1(String name,int age,String occuupation)
    {
        this.name = name;
        this.age = age;
        this.occupation= occuupation;
    }
    public abstract String talk();
}
//Student4类继承自java_chouxiang1类
class Student4 extends java_chouxiang1
{
   public Student4(String name,int age,String occupation) {
//       //在这里必须明确调用抽象类中的构造方法（抽象类中声明构造方法后，需要在子类中明确调用）
       super(name,age, occupation);
   }
       //覆写talk（）方法
       public String talk()
       {
           return "学生——》姓名：" + this.name + ",年龄：" + this.age + "职业：" + this.occupation;
       }

   }

/**
 * Created by xabcd on 2019/2/16.
 */
public class test_chouxiang
{
    public static void main(String[] args)
    {
        Student4 s = new Student4("张三",20,"学生");
        System.out.println(s.talk());

    }
}





学生——》姓名：张三,年龄：20职业：学生