dateUtil

花旗的面试，有面试题目（其中包含英文面试题目）、笔试、因为包含了个CoreJava的面试题目，所以就选择了Java类了(Citigroup interview, interview questions (which contains the English interview questions), written, because contains a CoreJava the interview questions, so we chose Java class)

说明：  spring boot 工作流，采用spring boot的结构框架实现工作流的机制(Spring boot workflow, using spring boot structure framework to implement workflow mechanism)

传智播客毕向东老师Java_SE基础课程笔记(Chuan Chi podcast Bi Xiangdong teacher Java_SE basic course notes)

Java 模式之抽象工厂，详细解答，值得一看(Java model abstraction factory, detailed answers, worth a visit)

Java Mail APi 功能测试 代码 (JAVA MAIL API SIMPLE INSTRUCTION)

Interface definition for a callback to be invoked when a menu item is clicked.

This class is used to communicate the results of a sync operation to the SyncManager. Based on the values here the SyncManager will determine the disposition of the sync and whether or not a new sync operation needs to be scheduled in the future.

java程序排序方法中的选择法排序，选择法排序被广泛应用易于理解(selection method java program sort method sort, sort of the selection method is widely used in easy to understand)

说明：   字符串数组中的某个字符进行替换 统计每个数字出现的个数(A string array of characters in the replacement of Statistics figures for each number of)

用java语言实现可视化的校园导游系统，包括景点介绍和最短路径等。(Visualization using java language campus tour guide system, including the introduction and the shortest path and other attractions.)