接口实践；接口与抽象类

1.接口声明：

package JavaInterfaceStudy;

/**

*接口实践

* @author scown

* @param <T>

*/

public interface UseMouth <T>{

    void eat(T parm);

    void speak(T parm);

}

2.接口实现：

package javaClassStudy;

import JavaInterfaceStudy.UseMouth;

/**

*

* @author Administrator

*/

public class Student extends Person implements UseMouth <Student>  {

    public Student(String name, int age) {

        super(name, age);

    }

    @Override

    public String getDescription() {

        System.out.println("Name is:"+this.getName());

        return "Name is:" + this.getName();

    }

    /**

     *

     */

    @Override

    public void live() {

        System.out.println("I live in a big house!"+this.getName());

      }

    @Override

    public void eat(Student parm) {

        System.out.println(this.getName()+"eat songthing！");

    }

    //实现speak方法，当前这个学生讲给另一个学生

    @Override

    public void speak(Student parm) {

        Student otherStudent = parm;

        System.out.println(this.getName()+" speak to " + otherStudent.getName());

    }

}

3.接口应用：

import javaClassStudy.Student;

import javaClassStudy.Person;

public class helloWorld {

    public static void main(String[] parm){

          //reflection 

          //实例一个学生对象

          Student studentScown = new Student("yuxg",12);

          Student StudentOther = new Student("张三",12);

          studentScown.speak(StudentOther);

    }

}

4.接口与抽象类：