java 对数组列表进行排序。使用比较器。链接：https：//stackoverflow.com/questions/2784514/sort-arraylist-of-custom-objects

Posted 2021-05-08

/**
 * Service Answer Option Comparator
 */
private class ServiceAnswerOptionComparator implements Comparator<ServiceAnswerOption> {
    @Override
    public int compare(ServiceAnswerOption sao1, ServiceAnswerOption sao2) {
        return sao1.serviceQuestionOption.orderIndex - sao2.serviceQuestionOption.orderIndex;
    }
}