创建一个猫类该美具备以下属性、颜色，年龄姓名，请将该猫类创建为一个标准的JavaBean类。创建5个猫类的对像并求它们年龄的平均值

好的，以下是猫类的JavaBean代码：

public class Cat {
    private String name;
    private String color;
    private int age;

    public Cat() {

    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    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;
    }
}

接下来，我们可以创建5个猫类的对象，并求它们年龄的平均值。

public class Main {
    public static void main(String[] args) {
        Cat cat1 = new Cat("Tom", "white", 3);
        Cat cat2 = new Cat("Kitty", "black", 2);
        Cat cat3 = new Cat("Lily", "gray", 1);
        Cat cat4 = new Cat("Lucy", "brown", 4);
        Cat cat5 = new Cat("Jack", "orange", 2);

        int sum = cat1.getAge() + cat2.getAge() + cat3.getAge() + cat4.getAge() + cat5.getAge();
        double average = sum / 5.0;
        System.out.println("The average age of the five cats is: " + average);
    }
}

输出结果为：

The average age of the five cats is: 2.4