Calculator

编写一个线段类 MyLine，要求如下: 主要属性有： x ，y ；类型为Point (查看API) 编写构造方法，如 MyLine(Point p1 , Point p2) 编写5个成员方法。如： 检查线段是否位于第一象限check()… 求线段的长度 length() … 判断两条直线是否相交(另一线段作为参数)。 编写一点到该线段（或延长线）的距离 其他方法。 注：编写方法时，考虑利用Point类的方法 编写测试程序 (Write a segment class MyLine, requirements are as follows: The main attributes are: x, y type Point (see API) the preparation of construction methods, such as MyLine (Point p1, Point p2) prepared by five members of the method. Such as: Check whether the line segment in the first quadrant check () ... order to segment the length of the length () ... to determine whether the two straight lines intersect (the other segment as a parameter). The preparation of 1:00 to the line segment (or extension) of the distance from other methods. Note: The preparation method, consider using the Point class approach to preparing test program)

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)

自己写的带有字体的java带界面的代码，导入可以直接使用。可以显示你的电脑上安装的大部分字体。(Write your own fonts with java code to interface with the import can be used directly. Most can display fonts installed on your computer.)

Ofbiz10.04改用mysql数据库配置(Ofbiz10.04 switch to mysql database configuration)

打飞碟程序，用JAVA编写！还比较号玩！(fight UFO procedures, prepared using JAVA! Still, playing!)

JSp网上商城代码，有注示说明，可以做为学习参考，不可做为商用，(JSp online store code, Note said instructions, can be used as a reference is not available as a commercial,)

编写一个Ellipsoid类，用于椭球体的表示，其中定义三个私有变量表示一个椭球体的长半轴a短半轴b和扁率apha(Write a Ellipsoid class, used to represent the ellipsoid, which defined three private variables represents an ellipsoid semimajor axis semiminor axis B and a of APHA)

自己写的java小程序，包括一个邮件界面，并对界面上的控件进行监控，对事件反应并通过命令提示符显示出来(Write their own Java applets, including an e-mail interface, the controls and interface monitoring, incident response and displayed through the command prompt)

写一个程序，实现任意类型文件的复制。从命令行输入原始文件名，输出文件与原始文件同名但扩展名为.bak。程序文件命名为Exe6_1.java。(Write a program that, for any type of file replication. From the command line input to the original file name, output file with the original file name and extension of.Bak. Program file named Exe6_1.java. )

my hardy was there before Christ