可变字段不应该是“公共静态”

我收到下面一行的 sonarQube 错误，有专家建议如何解决这个问题吗？提前致谢

    protected static final String [] COLUMN_NAMES = new String[]{"date","customerNumber","customerName",
            "account","emailAdress","mobilePhoneNumber","emailStatus"};

您可以将此数组更改为private多变的。

然后添加一个static返回此数组的副本或不可变的方法List由这个数组支持。

例如：

private static final String [] COLUMN_NAMES = new String[]{"date","customerNumber","customerName",
        "account","emailAdress","mobilePhoneNumber","emailStatus"};

protected static List<String> getColumnNames() {
    return Collections.unmodifiableList(Arrays.asList(COLUMN_NAMES));
}

或者您可以将数组变量替换为不可修改的变量List而不是使用该方法。这会更有效率（因为List将被创建一次，而不是在每次调用时创建static方法）：

protected static List<String> COLUMN_NAMES = Collections.unmodifiableList(Arrays.asList("date","customerNumber","customerName",
        "account","emailAdress","mobilePhoneNumber","emailStatus"));