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信息管理应用源码可以实现读取已安装应用的权限、清除应用的默认设置、清除缓存、把应用移动到SD卡、强行停止应用、卸载应用、读取应用版本、读取应用名、读取应用占用存储大小、读取安装时间、读取系统应用数、读取用户应用数等，其他功能块还有防止重复点击、应用静默安装(2.3.7测试无效)、Package manager has died错误分析。应用列表可以按名称、安装时间、应用大小、类型进行排序。项目编译版本4.0.3 编码UTF-8。(Information management application source code can achieve read application has been installed, authority, to remove the application default settings, clear the cache, the mobile apps to SD card, forced to stop the application, uninstall the application, read version of the application, read the name of the application, read by applying occupied memory size, read the installation time, reading system for a number of applications, read a number of user applications such as and other functional blocks and prevent repeat click, application of silent installation (2.3.7 test is invalid), the package manager has died of error analysis. Application list can be sorted by name, installation time, application size, type. Project compiled version 4.0.3 code UTF-8.)

从网络上下载数据的java代码，只包含了必须的class，需要的可以下来看看。(Java code to download data from the Internet, contains only the required class, need can come down to see. )

用java编写的聊天室，里面包括客户端和服务端，功能齐全，并有简单的GUI设计(Prepared using java chat room, which includes client and server, fully functional, and a simple GUI design)

通过struts2作为web端,实现文件上传，并将上传的文件存入hadoop的HDFS中,可以对上传的文件进行操作(hadoop2.2 struts2 upload)

dweight c chapter 1 book c programming a modern approach

Check Box extends Compound Button Source Code for Andriod.

oscache的缓存实例，可以用于学习二级级缓存，及应用到项目中，加速数据库查找效率。(oscache cache instance, can be used to study the two-level cache, and applied to the project, to accelerate the efficiency of database lookup.)

说明：  CAD数字批量加减乘除,命令TX，CAD加载插件后，按命令行提示操作即可(CAD digital batch addition, subtraction, multiplication and division)

修改实验7中定义的Rectangle类，使之拥有两个构造方法。其中一个是默认的，它使两点的坐标都为（0，0） 另一个带有4个参数，求出左上角和右下角点坐标为（2.1，3.2）、（5.2，6.3）的矩形的周长及面积，再利用带参数的构造方法创建Rectangle对象，求出左上角和右下角点坐标为（1，2）、（6.8，10.5）的矩形的周长及面积.(Modify the definition of experiment 7 Rectangle class, so that it has two constructors. One is the default, it makes two points of the coordinate of (0,0) the other with four parameters, find the upper left and lower right corner coordinates (2.1,3.2), (5.2,6.3) and perimeter and area of ​ ​ a rectangle, and then use a parameterized constructor method to create a Rectangle object, find the upper left and lower right corner coordinates (1,2), (6.8,10.5) rectangle of perimeter and area.)

编写一个控制台程序，模拟在ATM机的存款和取款过程，当输入给定的卡号和密码（初始卡号和密码到数据文件里查看）时，系统能登录ATM系统，根据用户的身份不同显示不同的程序界面；取款 　　每次取款金额只能为100的倍数，总额不超过2000元，不允许透支。且取款之后，要记录取款的金额和时间。 存款 　　每次存款金额只能为100的倍数，总额不超过2000元。 修改密码 　　新密码长度不小于6位，不允许出现6位完全相同的情况，只有旧密码正确，新密码符合要求，且两次输入相同的情况下才可以成功修改密码。(Write a console program to simulate the ATM deposits and withdrawals process, when you enter a given number and password (the initial number and password to the data file view), the system can log in ATM systems, according to the user' s identity different display different The program interface withdrawal amount each withdrawal can only be a multiple of 100, the total does not exceed 2,000 yuan, does not allow overdrafts. And withdrawals after the withdrawal of the amount to be recorded and time. Deposit Amount per Deposit only a multiple of 100, totaling no more than 2,000 yuan. Change Password New Password length not less than six, allowed six identical situation, only the old password is correct, the new password meets the requirements, and enter the same case twice before they can successfully change the password.)