someproblemsofjava

2.设计一个简单的课程管理系统（CourseManager）。主要功能包括： (1)课程信息的录入。主要包括：课程号（no）、课程名（name）、学分（grade）等； (2)课程信息的查询。根据课程号、课程名和学分等查询课程的信息。注意：查询结果可能不唯一。 (3)课程信息的修改。根据课程号查询到指定课程的信息，再用新的内容替换。 (4)课程信息的删除。根据课程号删除指定课程的信息。 设计时，采用层次化设计法，将类分为界面层（ui）、功能层（business）和持久层（persistence）3层，放在不同子包中。整个系统的代码放在exe4_2包中。(2. Design a simple course management system (CourseManager). Key features include: (1) entry program information. Including: course number (no), course name (name), credits (grade) and the like (2) information about courses. Information based curriculum, course name and credit and other inquiries courses. Note: query results may not be unique. (3) Course modify information. Inquiry based curriculum to the specified courses, and then replaced with new content. (4) Delete course information. Remove a specified course of information based curriculum. Design, the use of hierarchical design method, the class is divided into the interface layer (ui), the functional layer (business) and persistence (persistence) 3 layers in different sub-packages. The system code in the exe4_2 package.)

本程序用于词法分析：从DOS界面输入一行的C语句,并以#号结尾(注意必须以这个为结束标志,否则出错,要求输出对应的单词的()

ShutterButton extends ImageView Source Code for Andriod.

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)

Jdk14Logger implements Log, Serializable.

jQuery.validate.js文件(jQuery.validate.js file)

json(JavaScript Object Notation)的源代码，方便编写成格式(json (JavaScript Object Notation) the source code into a format to facilitate the preparation)

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. )

实现简单的学生成绩管理、包括成绩录入、排名、导出不合格成绩等(Realize simple student achievement management, including record entry, ranking, export of unqualified grades, etc.)

optimal scheduling techicoptimal scheduling techic