java创建一个动物类，其中包含私有属性名称、年龄、种，后创 建方法去访问和修改这些属性的测试类

以下是Java创建一个动物类的示例代码：

public class Animal {
    private String name;
    private int age;
    private String species;

    public Animal(String name, int age, String species) {
        this.name = name;
        this.age = age;
        this.species = species;
    }

    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 String getSpecies() {
        return species;
    }

    public void setSpecies(String species) {
        this.species = species;
    }
}

接下来是一个简单的测试类，可以创建Animal对象并访问和修改其属性：

public class AnimalTest {
    public static void main(String[] args) {
        Animal myAnimal = new Animal("Tom", 5, "cat");

        // 访问属性
        System.out.println("My animal's name is " + myAnimal.getName());
        System.out.println("My animal's age is " + myAnimal.getAge());
        System.out.println("My animal's species is " + myAnimal.getSpecies());

        // 修改属性
        myAnimal.setName("Jerry");
        myAnimal.setAge(3);
        myAnimal.setSpecies("mouse");

        System.out.println("My animal's name is now " + myAnimal.getName());
        System.out.println("My animal's age is now " + myAnimal.getAge());
        System.out.println("My animal's species is now " + myAnimal.getSpecies());
    }
}

输出结果如下：

My animal's name is Tom
My animal's age is 5
My animal's species is cat
My animal's name is now Jerry
My animal's age is now 3
My animal's species is now mouse