12-多态的综合练习

练习

• 实操

  动物类

  public class Animal {
      //动物
      //颜色
     private String color;
     //年龄
     private int age;
      private String something;
      public Animal() {
      }
  
      public Animal(String color, int age,String something) {
          this.color = color;
          this.age = age;
          this.something = something;
      }
  
      public String getColor() {
          return color;
      }
  
      public void setColor(String color) {
          this.color = color;
      }
  
      public int getAge() {
          return age;
      }
  
      public void setAge(int age) {
          this.age = age;
      }
  
      public String getSomething() {
          return something;
      }
  
      public void setSomething(String something) {
          this.something = something;
      }
  
      //行为
      public void eat(String something){
      }
  }
  
  

  猫类

  public class cat extends Animal{
      //猫
  
      public cat() {
      }
  
      public cat(String color, int age, String something) {
          super(color, age, something);
      }
  
      public void catchMouse(){
          System.out.println("猫在抓老鼠");
      }
  
      @Override
      public void eat(String something) {
          System.out.println(getColor()+"的"+getAge()+"岁的猫在眯着眼睛侧着吃"+getSomething());
      }
  }
  
  

  狗类

  public class dog extends Animal{
      //狗
  
      public dog() {
      }
  
      public dog(String color, int age, String something) {
          super(color, age, something);
      }
  
      public void lookHome(){
          System.out.println("狗在看家");
      }
  
      @Override
      public void eat(String something) {
          System.out.println(getAge()+"岁的"+getColor()+"的狗"+"在抱着"+getSomething()+"猛吃");
      }
  
      public void keepPet(person p) {
  
      }
  }
  
  

  饲养员类

  public class person {
      //饲养
      private String name;
      private int age;
  
      public person() {
      }
  
      public person(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 void keepPet(Animal a,String something){
          if (a instanceof dog){
              System.out.println(age+"岁的"+name+"养了一只"+a.getColor()+"的"+a.getAge()+"的狗");
              a.eat(something);
              ((dog) a).lookHome();
          }else if (a instanceof cat){
              System.out.println(age+"岁的"+name+"养了一只"+a.getColor()+"的"+a.getAge()+"的猫");
              a.eat(something);
              ((cat) a).catchMouse();
          }
      }
  }
  

  测试

  public class test {
      public static void main(String[] args) {
          Animal a = new Animal();
          dog d = new dog("五颜六色",888,"泛着金光的骨头");
          d.lookHome();
          d.eat("泛着金光的骨头");
          cat c = new cat("黑白相间",999,"泛着彩光的鱼");
          c.catchMouse();
          c.eat("泛着彩光的鱼");
          person p = new person("蔡徐坤",188);
          p.keepPet(d,"泛着金光的骨头");
          p.keepPet(c,"泛着彩光的鱼");
      }
  }