18-接口和抽象类的综合案例

• 练习1

  乒乓球运动员-类

  package yundong;
  
  public class pingpong extends athlete implements English{
      public pingpong() {
      }
  
      public pingpong(String name, int age) {
          super(name, age);
      }
  
      @Override
      public void word() {
          System.out.println(getName()+"学习乒乓球");
      }
  
      @Override
      public void english() {
          System.out.println("乒乓球运动员说英语");
      }
  }
  
  

  篮球运动员-类

  package yundong;
  
  public class basketball extends athlete{
      public basketball() {
      }
  
      public basketball(String name, int age) {
          super(name, age);
      }
  
      @Override
      public void word() {
          System.out.println(getName()+"学习蓝球");
      }
  }
  
  

  乒乓球教练-类

  package yundong;
  
  public class PingpongCoach extends athlete implements English{
      public PingpongCoach() {
      }
  
      public PingpongCoach(String name, int age) {
          super(name, age);
      }
  
      @Override
      public void word() {
          System.out.println(getName()+"教乒乓球");
      }
  
      @Override
      public void english() {
          System.out.println("乒乓球教练说英语");
      }
  }
  

  蓝球教练-类

  package yundong;
  
  public class BasketballCoach extends athlete{
      public BasketballCoach() {
      }
  
      public BasketballCoach(String name, int age) {
          super(name, age);
      }
  
      @Override
      public void word() {
          System.out.println(getName()+"教蓝球");
      }
  }
  

  英语-接口

  package yundong;
  
  public interface English {
      public abstract void english();
  }
  
  

  人-类

  package yundong;
  
  public abstract class athlete {
      private String name;
      private int age;
  
      public athlete() {
      }
  
      public athlete(String name, int age) {
          this.name = name;
          this.age = age;
      }
  
      public String getName() {
          return name;
      }
  
      public void setName(String name) {
          this.name = name;
      }
  
      public int getAge() {
          return age;
      }
  
      public void setAge(int age) {
          this.age = age;
      }
      public abstract void word();
  
  
  }
  

  测试-类

  package yundong;
  
  public class Test {
      public static void main(String[] args) {
          basketball b = new basketball("篮球运动员",18);
          b.word();
          BasketballCoach B = new BasketballCoach("蓝球教练",88);
          B.word();
          pingpong p = new pingpong("乒乓球运动员",18);
          p.english();
          p.word();
          PingpongCoach P = new PingpongCoach("乒乓球教练",88);
          P.english();
          P.word();
      }
  }