package LeiDeJiCheng; public abstract class Animal { private String name; private int age; //构造器 public Animal(){ }//无参 public Animal(String name,int age){ this.name = name; this.age = age; }//有参 public abstract void eat(); public String getName(){ return name; } public void setName(String name){ this.name = name; } public int getAge(){ return age; } } class Rabbit extends Animal{ public Rabbit(){ } public Rabbit(String name,int age){ super(name, age); } @Override public void eat(){ System.out.println("兔子吃胡萝卜"); } } class Dog extends Animal{ public Dog(){} public Dog(String name,int age){ super(name, age); } @Override public void eat(){ System.out.println("狗吃shit"); } } class Friog extends Animal { public Friog(){} public Friog(String name,int age){ super(name,age); } @Override public void eat(){ System.out.println("青蛙吃虫子"); } }

//测试类
public class Test {
public static void main(String[] args) {
Animal animal1 = new Rabbit("小白兔", 2);
Animal animal2 = new Dog("旺财", 3);
Animal animal3 = new Friog("青蛙", 1);

animal1.eat();
animal2.eat();
animal3.eat();
}
}

//输出：
//兔子吃胡萝卜
//狗吃shit
//青蛙吃虫子

相关问题

续写这段代码package animal; public abstract class Animal { private String name; public Animal(String name) { this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } public abstract void makeSound();

public class Cat extends Animal {
private int age;

public Cat(String name, int age) {
super(name);
this.age = age;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

@Override
public void makeSound() {
System.out.println("Meow");
}
}

public class Dog extends Animal {
private String breed;

public Dog(String name, String breed) {
super(name);
this.breed = breed;
}

public String getBreed() {
return breed;
}

public void setBreed(String breed) {
this.breed = breed;
}

@Override
public void makeSound() {
System.out.println("Woof");
}
}

public class Elephant extends Animal {
private int weight;

public Elephant(String name, int weight) {
super(name);
this.weight = weight;
}

public int getWeight() {
return weight;
}

public void setWeight(int weight) {
this.weight = weight;
}

@Override
＊＊＊

帮我解释一下这段代码package bean; public class User { private String user; private String pwd; private String name; private String xxx; private int age; public String getUser() { return user; } public

这段代码定义了一个名为User的Java Bean类，它有五个私有成员变量：user、pwd、name、xxx和age。它们的类型分别为String和int。这个类还有一些公共方法，包括getUser()方法，它返回user成员变量的值。这个类的主要作用是封装用户的信息，提供公共的接口供其他类调用。在Java中，Bean类通常用来表示数据对象。