java

lucene开发demo例子及源码包，包中的文档有demo介绍，多种组合得索引建立(Lucene demo examples and source code development package, the package of documents has demo introduce a variety of combinations may Indexing)

用天平称重时，已知给定的砝码，求解最多能称出多少不同的重量。(With weighing scales, it is known that a given weight, solving most able to call out the number of different weight.)

说明：  简单的21点游戏，通过控制台输入输出，用于对java基础知识的学习和练习(Simple 21-point game, input and output through the console)

java程序员参考资料，JAVA的一些基本内容(java programming materials,reference of JAVA development test)

说明：  網路遊戲天堂1的JAVA模擬環境，以l1j-99nes為基礎開發，修正許多漏洞以及新增一些人性化功能，功能相當((Online game Paradise JAVA simulation environment 1 to l1j-99nes-based development, correcting many loopholes and add some user-friendly features, quite powerful))

这是一本学习Java语言非常好的书，适合于初学者，并具有一定深度。(This is a very good book to learn the Java language, suitable for beginners, and has a certain depth.)

Reading and writing in excel files, tutorial in basic4android developers.

实现了一个简单的数据库功能.包括 录入,查询,修改,显示所有记录,等等的基本的数据库功能 .(It implements a simple DB function,includes inputting,querying,modifying and displaying all the records,etc.)

j2ee登陆界面 输入用户名和密码登陆 (login start if you must write your nameand password first)

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.)