JAVA在一个类中,如何修改另一个类中的静态常量(字符串类型)的值

Question

1给Penguin类提供SEX_MALE和SEX_FEMALE两个静态常量,分别取值"Q仔"或"Q妹",
2修改Test类,使用静态常量对性别进行赋值
3修改企鹅的性别只能取值"雄"或"雌",通过修改静态常量值实现该需求

输入图 在Test类中 请选择企鹅的性别:(1Q仔,2Q妹) 2

实现效果图 性别是雌

Answer 1

public class Penguin {
    private String name;
    private int health;
    private int intimacy;
    private String gender;

    public Penguin(String name, int health, int intimacy, String gender) {
        this.name = name;
        this.health = health;
        this.intimacy = intimacy;
        this.gender = gender;
    }

    public String getName() {
        return name;
    }

    public int getHealth() {
        return health;
    }

    public int getIntimacy() {
        return intimacy;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        if (gender.equals("雄") || gender.equals("雌")) {
            this.gender = gender;
        } else {
            System.out.println("性别只能为“雄”或“雌”，修改未成功！");
        }
    }
}

public class Test {
    public static final String SEX_MALE = "Q仔";
    public static final String SEX_FEMALE = "Q妹";

    public static void main(String[] args) {
        System.out.println("请选择企鹅的性别：(1: Q仔, 2: Q妹)");
        Scanner scanner = new Scanner(System.in);
        int choice = scanner.nextInt();

        String gender;
        if (choice == 1) {
            gender = SEX_MALE;
        } else if (choice == 2) {
            gender = SEX_FEMALE;
        } else {
            System.out.println("输入无效！");
            return;
        }

        Penguin penguin = new Penguin("企鹅", 100, 0, gender);

        System.out.println("名字：" + penguin.getName());
        System.out.println("健康度：" + penguin.getHealth());
        System.out.println("亲密度：" + penguin.getIntimacy());
        System.out.println("性别：" + penguin.getGender());
    }
}