经典问题

直接使用java代码操作excel表格-direct use of java code operation excel forms

一个带备忘录程序，java写的，初学java做的，不要见笑-A memorandum with the procedure, java written java beginner to do and not a laughing stock

用JAVA平台做简单的资料出入面版-with JAVA platform to do simple information access panels

Lex是美国Bell实验室用C语言研制的一个词法分析程序自生成工具。它的基本原理就是使用正则表达式扫描匹配文本，并为每一个匹配模式定义一些操作，当用C语言作宿主语言时，这些操作都由C语言实现。一种匹配的正则表达式可能会包含相关的动作。这一动作可能还包括返回一个标记。当 Lex 接收到文件或文本形式的输入时，它试图将文本与正则表达式进行匹配。它一次读入一个输入字符，直到找到一个匹配的模式。如果能够找到一个匹配的模式，Lex 就执行相关的动作（可能包括返回一个标记）。-Lex Bell Laboratories of the United States with C language developed by a lexical analysis tool generated from the process. Its fundamental principle is to use a regular expression matching text scanning, and for every definition of a matching model for operation, when the C language of the host language, these operators by C language. A match of which is likely to contain expressions related to the moves. This action may also include the return of a marker. When Lex reception of the document or text input, it is trying to text and is a regular expression matching. It read an input into the characters, until they found a matching pattern. If they can find a matching model, Lex on the implementation of the action (which may include a return of markings).

一个Java典型实例-a typical example of Java

阿房投票问卷管理系统 1)管理员登陆帐号和密码都是admin。 2)数据库连接方式是使用JDBC For SQL Server驱动。用户使用时要修改opendata.jsp文件，修改SQL Server登陆用户名和密码。 3)目前的数据库连接、访问、修改都是通过页面完成，效率不是太高，在新版本中将使用JavaBeans实现。 4)新版本将添加如下功能：管理员权限设置、投票主题发布可选择单选或多选、投票者留言反馈等。-Awa vote a questionnaire Management System) administrator landing account and password are admin. 2) The database connection is to use SQL Server For JDBC driver. When users opendata.jsp document to amend, modify SQL Server username and password. 3) the current database connections, access, modify through the pages are completed, efficiency is not high, the new version will use JavaBeans achieve. 4) The new version will add the following functions : administrator settings, the option to vote theme release danxuan or election, voters voice feedback.

java Socket

拼图游戏源代码，是一个多任务工作在网上的-puzzles and source code, is a multi-mission on the net

多功能时钟,请收下-multifunctional clock, please accept

1．文件和目录管理，使用java.io.File类编程，完成如下功能： （1）输入文件名称 （2）判断该文件名称是否存在 （3）若文件存在，判断是文件还是目录 （4）若是文件则输出文件的各种属性 （5）若是目录则输出其中包含的所有文件的名称 2．二进制文件的读写操作，用InputStream和OutputStream及其子类，设计并实现一个可以完成文件复制操作的程序。 3．文本文件的读写操作，编写一个文本文件分析程序，读入一个英文文本文件，统计其中单词、数字、标点符号等元素出现的次数，并记录单词总数。提示：对文件的分析可以使用StreamTokenizer类。 4．异常处理程序的编写，在上述三个程序中应用异常处理方法增加程序的错误处理能力。-1. File and directory management, the use of java.io.File class programming to complete the following functions : (a) input file name (2) to determine that the names of the existence of documents (3) If the file exists, or judgment is that the paper catalog (4) If the paper is output files the various attributes (5) If the directories containing the output of all documents name two. Binary file reading or writing, using InputStream and OutputStream and its sub-class design and realization of a complete copy of the operating procedures. 3. The text files and write, to prepare a text file analysis program, read an English text files, statistics words, numbers, punctuat