java进阶书籍 Effective Java-Joshua Bloch 3rd Edition 2018

SQOOP2的java实例 创建连接，创建任务，执行任务(SQOOP2 demo)

提供在java中实用正则表达式的一系列例子(Provides java regular expression in a series of practical examples)

照片变成字母符号软件，讲照片转化成符号的形式(Photographs into alphabetic symbols software)

分段直线拟合，将一组点 分段拟合计算出最小权值和画出线条(Piecewise linear fitting, fitting a set of points to calculate the minimum weight sub-values ​ ​ and draw lines )

This IntegerValue represents a integer value that is converted from another scalar value.

通过GPS获取当前位置坐标的简单DEMO(Get GPS coordinates simple DEMO)

利用JAVA实现试题库系统，可以自动组卷，内含数据库MDF文件以及实验报告(Realization of database system using JAVA, you can auto generating test paper, embedded database MDF files and test reports)

implementattion analyseur de-proxy irc et http avec une interface graphique en java

说明：  实现扑克牌，一副牌中抽去大小王剩下52张（如果初练也可只用1～10这40张牌)，任意抽取4张牌（称牌组)，用加、减、乘、除（可加括号)把牌面上的数算成24。每张牌必须用一次且只能用一次，如抽出的牌是3、8、8、9，那么算式为（9-8)×8×3或3×8+（9-8)或（9- 8÷8)×3等。(In order to realize playing cards, 52 cards are removed from a deck (only 40 cards can be used for the first practice). Four cards are randomly selected (called card groups). The number on the deck is calculated as 24 by adding, subtracting, multiplying and dividing (brackets can be added). Each card must be used once and only once. If the drawn card is 3, 8, 8, 9, the formula is (9-8)*8*3 or 3*8+ (9-8) or (9-8 8)*3)

java做的计算器，JFrame，自己做的作业，有需要的下载(java calculator to do, JFrame, do their own work, there is a need to download)