10-01 Java 类,抽象类,接口的综合小练习--运动员和教练

运动员和教练的案例分析

运动运和教练的案例代码实现

整个分析过程，我是通过画图讲解的。

*/
//定义一个说英语的接口
interface SpeakEnglish {
//说英语
public abstract void speak();
}

//定义人的抽象类
abstract class Person {
private String name;
private int age;

</span><span style="color: #0000ff;"&gt;public</span><span style="color: #000000;"&gt; Person() {}

</span><span style="color: #0000ff;"&gt;public</span> Person(String name,<span style="color: #0000ff;"&gt;int</span><span style="color: #000000;"&gt; age) {
    </span><span style="color: #0000ff;"&gt;this</span>.name =<span style="color: #000000;"&gt; name;
    </span><span style="color: #0000ff;"&gt;this</span>.age =<span style="color: #000000;"&gt; age;
}

</span><span style="color: #0000ff;"&gt;public</span><span style="color: #000000;"&gt; String getName() {
    </span><span style="color: #0000ff;"&gt;return</span><span style="color: #000000;"&gt; name;
}

</span><span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; setName(String name) {
    </span><span style="color: #0000ff;"&gt;this</span>.name =<span style="color: #000000;"&gt; name;
}

</span><span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;int</span><span style="color: #000000;"&gt; getAge() {
    </span><span style="color: #0000ff;"&gt;return</span><span style="color: #000000;"&gt; age;
}

</span><span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span> setAge(<span style="color: #0000ff;"&gt;int</span><span style="color: #000000;"&gt; age) {
    </span><span style="color: #0000ff;"&gt;this</span>.age =<span style="color: #000000;"&gt; age;
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;睡觉</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; sleep() {
    System.out.println(</span>"人都是要睡觉的"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;吃饭，运动员和教练吃的不一样。这里使用抽象<a href="https://www.jb51.cc/tag/fangfa/" target="_blank" class="keywords">方法</a></span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;abstract</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; eat();

}

//定义运动员抽象类
abstract class Player extends Person {
public Player() {}

</span><span style="color: #0000ff;"&gt;public</span> Player(String name,<span style="color: #0000ff;"&gt;int</span><span style="color: #000000;"&gt; age) {
    </span><span style="color: #0000ff;"&gt;super</span><span style="color: #000000;"&gt;(name,age);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;学习，乒乓器和篮球运动员学习的东西不一样。这里使用抽象<a href="https://www.jb51.cc/tag/fangfa/" target="_blank" class="keywords">方法</a></span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;abstract</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; study();

}

//定义教练抽象类
abstract class Coach extends Person {
public Coach() {}

</span><span style="color: #0000ff;"&gt;public</span> Coach(String name,age);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;教，乒乓器和篮球运动员教的东西不一样。这里使用抽象<a href="https://www.jb51.cc/tag/fangfa/" target="_blank" class="keywords">方法</a></span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;abstract</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; teach();

}

//定义乒乓球运动员具体类
class PingPangPlayer extends Player implements SpeakEnglish {
public PingPangPlayer(){}

</span><span style="color: #0000ff;"&gt;public</span> PingPangPlayer(String name,age);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;吃</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; eat() {
    System.out.println(</span>"乒乓球运动员吃大白菜，喝小米粥"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;学习</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; study() {
    System.out.println(</span>"乒乓球运动员学习如何发球和接球"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;说英语</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; speak() {
    System.out.println(</span>"乒乓球运动员说英语"<span style="color: #000000;"&gt;);
}

}

//定义篮球运动员具体类
class BasketballPlayer extends Player {
public BasketballPlayer(){}

</span><span style="color: #0000ff;"&gt;public</span> BasketballPlayer(String name,age);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;吃</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; eat() {
    System.out.println(</span>"篮球运动员吃牛肉，喝牛奶"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;学习</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; study() {
    System.out.println(</span>"篮球运动员学习如何运球和投篮"<span style="color: #000000;"&gt;);
}

}

//定义乒乓球教练具体类
class PingPangCoach extends Coach implements SpeakEnglish {
public PingPangCoach(){}

</span><span style="color: #0000ff;"&gt;public</span> PingPangCoach(String name,age);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;吃</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; eat() {
    System.out.println(</span>"乒乓球教练吃小白菜，喝大米粥"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;教</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; teach() {
    System.out.println(</span>"乒乓球教练教如何发球和接球"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;说英语</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; speak() {
    System.out.println(</span>"乒乓球教练说英语"<span style="color: #000000;"&gt;);
}

}

//定义篮球教练具体类
class BasketballCoach extends Coach {
public BasketballCoach(){}

</span><span style="color: #0000ff;"&gt;public</span> BasketballCoach(String name,age);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;吃</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; eat() {
    System.out.println(</span>"篮球教练吃羊肉，喝羊奶"<span style="color: #000000;"&gt;);
}

</span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;教</span>
<span style="color: #0000ff;"&gt;public</span> <span style="color: #0000ff;"&gt;void</span><span style="color: #000000;"&gt; teach() {
    System.out.println(</span>"篮球教练教如何运球和投篮"<span style="color: #000000;"&gt;);
}

}

class InterfaceDemo {
public static void main(String[] args) {
//测试运动员(乒乓球运动员和篮球运动员)
//乒乓球运动员
PingPangPlayer ppp = new PingPangPlayer();
ppp.setName("王浩");
ppp.setAge(33);
System.out.println(ppp.getName()+"---"+ppp.getAge());
ppp.eat();
ppp.sleep();
ppp.study();
ppp.speak();
System.out.println("----------------");
//通过带参构造给数据
ppp = new PingPangPlayer("刘洋",36);
System.out.println(ppp.getName()+"---"+ppp.getAge());
ppp.eat();
ppp.sleep();
ppp.study();
ppp.speak();
System.out.println("----------------");

    </span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;篮球运动员</span>
    BasketballPlayer bp = <span style="color: #0000ff;"&gt;new</span><span style="color: #000000;"&gt; BasketballPlayer();
    bp.setName(</span>"姚明"<span style="color: #000000;"&gt;);
    bp.setAge(</span>34<span style="color: #000000;"&gt;);
    System.out.println(bp.getName()</span>+"---"+<span style="color: #000000;"&gt;bp.getAge());
    bp.eat();
    bp.sleep();
    bp.study();
    </span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;bp.speak(); </span><span style="color: #008000;"&gt;//</span><span style="color: #008000;"&gt;没有该<a href="https://www.jb51.cc/tag/fangfa/" target="_blank" class="keywords">方法</a>
    </span>

}
}

原文链接：https://www.f2er.com/java/403343.html

10-01 Java 类,抽象类,接口的综合小练习--运动员和教练

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