参考:

sql语句查询多对多数据各个状态的数量
https://blog.csdn.net/qq_40393093/article/details/84190999

SQL查询记录总数
https://blog.csdn.net/iiithsoul/article/details/9977709?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ELandingCtr%7Edefault-1.queryctr&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ELandingCtr%7Edefault-1.queryctr&utm_relevant_index=2

SQL查记录总数-总数统计的方法
https://blog.csdn.net/q2941467430/article/details/119112313?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1.pc_relevant_paycolumn_v2&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1.pc_relevant_paycolumn_v2&utm_relevant_index=2

如何统计SQL语句查询出来的条数?
https://bbs.csdn.net/topics/350165319

sql查询语句,查数据库中一共多少条记录
https://ask.zol.com.cn/x/10763978.html

sql语句统计查询结果数量怎么写?
https://zhidao.baidu.com/question/1900371557735372700.html

SQL语句——查询记录的数量
https://blog.csdn.net/duling509/article/details/3400718

参考:

java中int转成String位数不足前面补零
https://blog.csdn.net/u013991521/article/details/55819876

Android 开发数字不足位数前面补0
https://blog.csdn.net/qq_32556691/article/details/106567017

java整形格式化补0_Java Android 开发数字不足位数前面补0
https://blog.csdn.net/weixin_39884373/article/details/114594757?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1.pc_relevant_paycolumn_v2&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1.pc_relevant_paycolumn_v2&utm_relevant_index=2

Android 数字转字符串、保留两位小数、千分位、补 0、百分比
http://cftea.com/c/2017/03/6843.asp

参考:

java linkedlist 查找_用LinkedList如何实现搜索指定对象的元素
https://blog.csdn.net/weixin_29793473/article/details/114201063

java linkedlist 查找_Java LinkedList.get() 获取元素
https://blog.csdn.net/weixin_34418334/article/details/114537443

java list 查找元素_java中如何在LinkedList查找元素
https://blog.csdn.net/weixin_39878716/article/details/114180132

java linkedlist 查找_用LinkedList如何实现搜索指定对象的元素
https://blog.csdn.net/weixin_29793473/article/details/114201063

Java LinkedList
https://www.runoob.com/java/java-linkedlist.html

参考:

android监听器(Listener)的使用
https://blog.csdn.net/i_am_tomato/article/details/42495161

Android中接口监听器(Listener)的使用,通过接口回调刷新Activity中的数据
https://blog.csdn.net/weixin_42602900/article/details/118574151?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1.nonecase&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7Edefault-1.nonecase