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Groovy and Java

mike zeseler — Sun, 19 Apr 2009 02:49:00 GMT

Groovy and Java

mike zeseler 2009-04-19 10:49 发表评论

JDK 7 Twice as Fast* as JDK 6 for Arrays and Arithmetic

mike zeseler — Mon, 06 Apr 2009 07:03:00 GMT

有时间我把它弄成中文的�?br /> The 7th version of the Java Developer’s Kit (aka JDK 7) delivers quite a speed boost over JDK 6 array accesses. For us, this is huge. It’s like another year and a half of Moore’s law for free. Only in software. And you don’t even have to write multi-threaded code.

I’ve been profiling my new K-Means++ implementation for the next LingPipe release on some randomly generated data. It’s basically a stress test for array gets, array sets, and simple multiply-add arithmetic. Many LingPipe modules are like this at run-time: named entity, part-of-speech tagging, language modeling, LM-based classifiers, and much more.

While I was waiting for a run using JDK 1.6 to finish, I installed the following beta release of JDK 7:

> java -version
java version "1.7.0-ea"
Java(TM) SE Runtime Environment (build 1.7.0-ea-b52)
Java HotSpot(TM) 64-Bit Server VM (build 15.0-b03, mixed mode)

You can get it, too:

sun.com: JDK 1.7 Early Access Download Page
java.net: JDK 1.7 Binaries (including Installre)

I believe much of the reason it’s faster is the work of these fellows:

Würthinger, Thomas, Christian Wimmer, and Hanspeter Mössenböck. 2007. Array Bounds Check Elimination for the Java HotSpot Client Compiler. PPPJ.

Java’s always suffered relative to C in straight matrix multiplication because Java does range checks on every array access (set or get). With some clever static and run-time analysis, Würthinger et al. are able to eliminate most of the array bounds checks. They show on matrix benchmarks that this one improvement doubles the speed of the LU matrix factorization benchmark in the U.S. National Institute of Standards (NIST) benchmark suite SciMark 2, which like our clustering algorithm, is basically just a stress test for array access and arithmetic.

So far, my tests have only been on a Thinkpad Z61P notebook running Windows Vista (64 bit) with an Intel Core 2 CPU (T2700; 2.0GHz), and 4GB of reasonably zippy memory. I don’t know if the speedups will be as great for other OSes or for 32-bit JDKs.

I’m pretty excited about the new fork-join concurrency, too, as it’s just what we’ll need to parallelize the inner loops without too much work for us or the operating system.

^*Update: 2:30 PM, 30 March 2009 JDK 7 is only about 15% faster than Sun’s JDK 6 on my quad Xeons (E5410, 2.33GHz) at work running the same code. I’ll have to check the exact specs on both of my memory buses. The notebook has surprisingly fast memory and the Xeon’s running ECC registered memory that I don’t think is quite as fast.

Update: 11:00 AM, 31 March 2009 Like other matrix algorithms, k-means clustering is extremely front-side-bus sensitive (connection between memory and the CPU), because the bottleneck is often between memory and the CPU’s L2 cache. Memory’s significantly slower than CPU these days.

The Intel dual quad-core Xeon E5410 have 12MB of L2 cache at 2.3GHz, whereas the Thinkpad Z61P has Intel Core 2 Mobile T7200 has only 4MB of L2 cache at 2GHz. The Core 2 has a 667 MHz front-side bus whereas the Xeon reports a 1333 MHz front-side bus (is that just the confusion between spec reporting). I actually don’t know what kind of memory’s in the workstation �?I’ll have to crack it open and look. I’ve got 4GB of RAM in the notebook, but the motherboard can only see 3GB (ithat is, it’s not Windows �?the same thing happened when I installed Ubuntu on the notebook and it’s a known design limitation in many motherboards); I have 16GB of RAM in the workstation and the motherboard can see all of it. But it has two physical chips, each of which share the memory, so the motherboard’s architecture’s very different. There are so many confounding factors that I can’t tease apart what’s speeding up in JDK 7 so much on the notebook.

Anway, go forth and test. If you’re using a machine like my notebook to do number crunching, JDK 7 really is twice as fast as JDK 6 for matrix algorithms.

mike zeseler 2009-04-06 15:03 发表评论

hibernate入门更新完成

mike zeseler — Fri, 13 Feb 2009 11:47:00 GMT

Hibernate入门指南

        今天抽咯旉��完成咯自己没有完成的东西�?br />         希望大家多多支持�? 详细信息�Q?br />         参见http://www.tkk7.com/mikezeseler/archive/2009/01/15/251491.html


                                                            Mike zeseler

mike zeseler 2009-02-13 19:47 发表评论

mike zeseler — Sun, 08 Feb 2009 04:20:00 GMT

自己软�g开发经验不是很好，�q�须向大家学习！希望大家支持下我�Q�有不��之处请大家批评指正�?/span>

Groovy��是java世界的动态语�a�

一�Q�快速开始（gettingStart�Q?/span>

安装JDK环境

Groovy需�?/span>JDK1.4以上版本的支持。因此在安装groovy旉��先要安装JDK�?/span>

JDK安装步骤�Q?/span>

• 下蝲自己喜欢�?/span>JDK版本。（下蝲�|�址�Q?/span>http://java.sun.com�Q?/span>

• 下蝲Groovy�Q?/span>

Groovy�?/span> 下蝲首页截图

点击Download

�q�入下蝲��面

Groovy最新版本：Groovy 1.6-RC-2

我下载的是：Download Windows-Installer: Binary Release 安装版本

�q�行安装�?/span>

讄��JAVA_HOME 环境变量. �?/span>Windows�q�_��里，步骤如下:

(1)打开�pȝ��"控制面板"

单击"高��"选项�?/span>

单击"环境变量" 按钮

��d��一个名�U�Cؓ"JAVA_HOME" 的新的系�l�环境变量，�q�且��你�?/span>Java的安装目录作为它的�?/span> (例如�Q�我的是C:"Program Files"Java"jdk1.6.0�Q�版本号�Q?/span>)

你也可以��d�� %JAVA_HOME%"bin��C��的系�l�的PATH变量�?/span>

(2)叛_��我的电脑属�?/span>

点击高��选项

点击环境变量

点击新徏选项�Q?/span>

具体讄��

Path�Q?/span>

我用�?/span>Jdk版本�?/span>Jdk1.6

• �q�行安装文�g。（更改安装路径刎ͼ�C:"Program Files"Java"jdk1.6.0�Q�版本号�Q�）

• 讄��JAVA_HOME环境变量�Q�如我的

• 在系�l?/span>path中增加：%JAVA_HOME%"bin

注：对于1.1-rc-1以上版本需�?/span>JDK1.5版或更高的版本�?/span>

点击自己下蝲�?/span>Groovy windows安装版本

安装可以是默认的安装全点��M��一步（next�Q�：

安装��完成啦

(Note: as an alternative to setting a system environment variable, you can create yourself a '.bat' or '.cmd' file which sets

the variable. You then need to run that batch file in any console window in which you wish to run Java and double clicking on

.bat' or '.cmd' files containing Java invocation instructions won't work. If you are unsure about what this means, follow

the earlier instructions.)

Note: JDK 1.5 is required for version 1.1-rc-1. In earlier versions of JDK (notably 1.4.2) the compiller throws an exception:

*nested exception is org.codehaus.groovy.runtime.InvokerInvocationException: java.lang.NoSuchMethodError:

java.lang.String.replace(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;

The method "replace" was introduced in JDK 1.5 and is not supportedin earlier versions. This is also a reason why GRails

framework doesn't run on JRE 1.4

(1)如果你是安装版本Groovy环境变量不需要我们设�|�，在安装的时候就自动讄��好啦�?/span>

(2)如果不是�Q�请自己��试Groovy讄��如下�Q?/span>

讄��你的Groovy环境变量

从下载页面下�?/span>Groovy安装器或者二�q�制包，�q�且跟着介绍�q�行安装卛_��。（当前有一个问题，��是�?/span>windows下，你的安装路径不能含有�I�格

�Q�即�Q�要��其�~�省的安装�\�?/span>"c:"Program Files"Groovy" �Ҏ��?/span>"c:"Groovy"�q�样的�\径）

或者这�?/span>

从站点上得到Groovy发行版的copy,�q�且copy它到你硬盘上的某个地斏V�?/span>

解压�~�这�?/span>groovy包到你硬盘的某个�I�间�Q�如我的�?/span> C:"dev"groovy-1.0-jsr-06

讄��GROOVY_HOME环境变量. �?/span>Windows下，作如下步�?/span>:

��M��新的�pȝ��环境变量GROOVY_HOME �q�且��D��Z��?/span>groovy安装的�\径（我的�?/span> C:"dev"groovy-1.0-jsr-06)

打开命��o行窗口，�q�且键入"set" 然后打回车，查看你的环境变量讄��是否已经正确�?/span>

可选的�Q�你也可以添�?/span> %GROOVY_HOME%"bin ��C��?/span>PATH环境变量�?/span>

通过双击试着�q�行groovyConsole.bat。如果它不能工作�Q�打开一人命令行�H�口�Q�将目录改变�?/span>bin目录�Q��ƈ且运行它看他�q�回什么错误信息�?/span>

二：�q�行groovy

Groovy安装�Q�目�?/span>

我们需要点�?/span>groovyConsole.bat文�g�Q?/span>

文�g详细内容如下�Q?/span>

@if "%DEBUG%" == "" @echo off

@rem

@rem $Revision: 2770 $ $Date: 2005-08-29 12:49:42 +0200 (Mo, 29. Aug 2005) $

@rem

@rem Set local scope for the variables with windows NT shell

if "%OS%"=="Windows_NT" setlocal

:begin

@rem Determine what directory it is in.

set DIRNAME=%~dp0

if "%DIRNAME%" == "" set DIRNAME=."

"%DIRNAME%"startGroovy.bat" "%DIRNAME%" groovy.ui.Console %*

@rem End local scope for the variables with windows NT shell

if "%OS%"=="Windows_NT" endlocal

安装完整无误的话 �q�行groovyConsole.bat��׃��启动groovyConsole.exe�Q�出来一个编辑框�?br />

上面的是文本输入框：�Ҏ��groovy的语法输入要昄��的内容：

下面的是内容输出框：昄��上面的内容：

开始运�?/span>groovy�Q?br />

Hello, World

�?/span> groovyConsole�q�行�H�口的顶�?/span>,键入println "Hello, World!"

�q�且键入 .

注意�Q�在控制台窗口中�Q�即 groovyConsole�H�口前面的黑色的那个�Q�，文体得到打印�q�且 groovyConsole的下部显�C?/span> :

groovy> println "Hello, World!"

null

�?/span>"groovy>"开头的行正是控制台处理的文�?/span>. "null" 是表辑ּ�的�?/span>. 因�ؓ表达式没有�Q何值可以打�?/span> �Q�所�?/span>groovyConsole打印�?/span>"null"

接下来，再试一些实际的��|��用下面的字符串来替换控制台里的文本：

123+45*67

或者你喜欢的�Q何表辑ּ�然后�?/span> (I'm going to stop telling you to hit , I think you get the idea). 现在�Q?/span> groovyConsole下面打印的值有更多的含�?/span>.

Variables

You can assign values to variables for later use. Try the following:x = 1

println x

x = new java.util.Date()

println x

x = -3.1499392

println x

x = false

println x

x = "Hi"

println x

Lists and Maps

The Groovy language has built-in support for two important data types, lists and maps (Lists can be operated as arrays in Java language). Lists are used to store ordered collections of data. For example an integer list of your favorite integers might look like this:myList = [1776, -1, 33, 99, 0, 928734928763]

You can access a given item in the list with square bracket notation (indexes start at 0):

println myList[0]

Should result in this output:

1776

You can get the length of the list with the "size" method:

println myList.size()

Should print out:

But generally you shouldn't need the length, because unlike Java, the preferred method to loop over all the elements in an list is to use the "each" method, which is described below in the "Code as Data" section.

Another native data structure is called a map. A map is used to store "associative arrays" or "dictionaries". That is unordered collections of heterogeneous, named data. For example, let's say we wanted to store names with IQ scores we might have:

scores = [ "Brett":100, "Pete":"Did not finish", "Andrew":86.87934 ]

Note that each of the values stored in the map is of a different type. Brett's is an integer, Pete's is a string, and Andrew's is a floating point number. We can access the values in a map in two main ways:

println scores["Pete"]

println scores.Pete

Should produce the output:

Did not finish

To add data to a map, the syntax is similar to adding values to an list. For example, if Pete re-took the IQ test and got a 3, we might:

scores["Pete"] = 3

Then later when we get the value back out, it will be 3.

println scores["Pete"]

should print out 3.

Also as an aside, you can create an empty map or an empty list with the following:

emptyMap = [:]

emptyList = []

To make sure the lists are empty, you can run the following lines:

println emptyMap.size()

println emptyList.size()

Should print a size of 0 for the List and the Map.

条�g表达�?/span>

One of the most important features of any programming language is the ability to execute different code under different conditions. The simplest way to do this is to use the '''if''' construct. For example:amPM = Calendar.getInstance().get(Calendar.AM_PM)

if (amPM == Calendar.AM)

{

println("Good morning")

} else {

println("Good evening")

}

Don't worry too much about the first line, it's just some code to determine whether it is currently before noon or after. The rest of the code executes as follows: first it evaluates the expression in the parentheses, then depending on whether the result is '''true''' or '''false''' it executes the first or the second code block. See the section below on boolean expressions.

Note that the "else" block is not required, but the "then" block is:

amPM = Calendar.getInstance().get(Calendar.AM_PM)

if (amPM == Calendar.AM)

{

println("Have another cup of coffee.")

}

Boolean表达�?/span>

There is a special data type in most programming languages that is used to represent truth values, '''true''' and '''false'''. The simplest boolean expression are simply those words. Boolean values can be stored in variables, just like any other data type:myBooleanVariable = true

A more complex boolean expression uses one of the boolean operators:

Most of those are probably pretty intuitive. The equality operator is '''==''' to distinguish from the assignment operator '''='''. The opposite of equality is the '''!=''' operator, that is "not equal"

So some examples:

titanicBoxOffice = 1234600000

titanicDirector = "James Cameron"

trueLiesBoxOffice = 219000000

trueLiesDirector = "James Cameron"

returnOfTheKingBoxOffice = 752200000

returnOfTheKingDirector = "Peter Jackson"

theTwoTowersBoxOffice = 581200000

theTwoTowersDirector = "PeterJackson"

titanicBoxOffice > returnOfTheKingBoxOffice // evaluates to true

titanicBoxOffice >= returnOfTheKingBoxOffice // evaluates to true

titanicBoxOffice >= titanicBoxOffice // evaulates to true

titanicBoxOffice > titanicBoxOffice // evaulates to false

titanicBoxOffice + trueLiesBoxOffice < returnOfTheKingBoxOffice + theTwoTowersBoxOffice // evaluates to false

titanicDirector > returnOfTheKingDirector // evaluates to false, because "J" is before "P"

titanicDirector < returnOfTheKingDirector // evaluates to true

titanicDirector >= "James Cameron" // evaluates to true

titanicDirector == "James Cameron" // evaluates to true

Boolean expressions are especially useful when used in conjunction with the '''if''' construct. For example:

if (titanicBoxOffice + trueLiesBoxOffice > returnOfTheKingBoxOffice + theTwoTowersBoxOffice)

{

println(titanicDirector + " is a better director than " + returnOfTheKingDirector)

}

An especially useful test is to test whether a variable or expression is null (has no value). For example let's say we want to see whether a given key is in a map:

suvMap = ["Acura MDX":""$36,700", "Ford Explorer":""$26,845"]

if (suvMap["Hummer H3"] != null)

{

println("A Hummer H3 will set you back "+suvMap["Hummer H3"]);

}

Generally null is used to indicate the lack of a value in some location.

Debugging and Troubleshooting Tips

Print out the class of a variable that you're interested in with myVar.getClass(). Then look up the documentation for that class.

If you're having trouble with a complex expression, pare it down to a simpler expression and evaluate that. Then build up to your more complex expression.

Try restarting the groovyConsole (this will clear out all the variables so you can start over.

Look for the topic you're interested in in the Groovy User Guide

If you are a Java developer

you might want to check on the Differences from Java

also there afew a few Things to remember

Labels parameters

mike zeseler 2009-02-08 12:20 发表评论

mike zeseler java学习

mike zeseler — Wed, 04 Feb 2009 08:30:00 GMT

好的学习资料需要自己——Google^_^——mike zeseler
pdf Search Engine
http://www.pdf-search-engine.com/
鲜果博客榜——搜�|�好的blog很值得看看
http://bang.xianguo.com
Groovy是一个充满创新理念具有创新精��的��目

JAX 是�d国十分重要的Java技术会议（Java conference�Q�，每一�q�该�l�织都会召开会议评�?strong>最具创新精��的��目�Q�评选委员会�?a >40个提�?/a>��目中选择十个候选项�?/a>�Q�许多优�U��目如Matisse GUI builder�Q�NetBeans的一个插�Ӟ��用于构徏GUI�E�序�Q�、Nuxeo�Q�企业��内容��理解决�Ҏ��Q�等都入围候选，最后Groovy赢得�?�{�奖�Q�这是一个崇高的荣誉�Q�我们感到非帔R��_��特别是和许多非常优秀的项目一��L��赛。另外该奖项的上一期胜��是Spring framework�?/p>

�q�有�Q�由Dierk König创作出版的畅销�?-----《Groovy in Action》，也会作�ؓ奖品赠予Groovy�C�֛��Q�随后JAX��单独设�|�Groovy主题的会议进行颁奖�?strong>�q�些奖项证明�q�肯定了Groovy的创��C�h��|��q�说明Groovy在Java�C�֛�有不��的影响�?/strong>�?
http://groovy.codehaus.org
mxjava
http://www.mxjava.com/blog/

国外著名java技术资料网�?

http://www.onjava.com

    O'Reilly的Java�|�站. 每周都有新文�?

http://java.sun.com

    官方的Java开发者网�?- 每周都有新文章发�?

http://www.developer.com/java

    由Gamelan.com �l�护的Java技术文章网�?

http://www.java.net

    Sun公司�l�护的一个Java�C�֌��|�站

http://www.builder.com

    Cnet的Builder.com�|�站 - 所有的技术文�? 以Java��Z��.

http://www.ibm.com/developerworks/java

    IBM的Developerworks技术网�? �q�是其中的Java技术主��?

http://www.javaworld.com

    最早的一个Java站点. 每周更新Java技术文�?

http://www.devx.com/java

    DevX�l�护的一个Java技术文章网�?

http://www.fawcette.com/javapro

    JavaPro在线杂志�|�站.

http://www.sys-con.com/java

    Java Developers Journal的在�U�杂志网�?

http://www.javadesktop.org

    位于Java.net的一个Java桌面技术社区网�?

http://www.theserverside.com

    �q�是一个讨论所有Java服务器端技术的�|�站.

http://www.jars.com

    提供Java评论服务. 包括各种framework和应用程�?

http://www.jguru.com

    一个非常棒的采用Q&A形式的Java技术资源社�?

http://www.javaranch.com

     一个论坛，得到Java问题�{�案的地方，初学者的好去处�?

http://www.ibiblio.org/javafaq/javafaq.html

    comp.lang.java的FAQ站点 - 攉��了来自comp.lang.java新闻�l�的问题和答案的分类目录.

http://java.sun.com/docs/books/tutorial/

    来自SUN公司的官方Java指南 - 对于了解几乎所有的java技术特性非常有帮助.

http://www.javablogs.com

    互联�|�上最�z�跃的一个Java Blog�|�站.

mike zeseler 2009-02-04 16:30 发表评论

mike zeseler — Fri, 30 Jan 2009 10:05:00 GMT

我的最�?nbsp;code
http://www.java2s.com/Code/Java/CatalogJava.htm
Open Source Software
http://sourceforge.net/index.php
IBMblog
http://www.ibm.com/developerworks/blogs/
Sun China
http://developers.sun.com.cn
开源中文文�?br /> http://ajava.org/
EXT
http://www.easyjf.com/blog/index.html
openABC
http://www.openabc.org
Sun
http://java.sun.com/javaee/index.jsp
javablogs
http://www.javablogs.com
java开�?br /> http://www.open-open.com
开发文档：
http://docviewer.net/
JAVA中文世界�C�֌�
http://bbs.chinajavaworld.com/
http://blog.chinajavaworld.com/
csdn
http://blog.csdn.net/heiyeshuwu
tarena
http://bbs.tarena.com.cn
转：

1.TheServerside.com �?/p>

2.InfoQ.com Floyd Marinescu 在离开 TSS 后另��L��Ӟ��2006�q�中最重要推荐�?/p>

视野不再局限于Java 而是包括Java,.Net, Ruby ,SOA, Agile�Ҏ��{�热门话题�?/p>

3.JDJ的电子杂�?在JDJ首页的最底处订阅�Q�文章质量不低于5-7的传�l�三强�?/p>

4.SWik.net 攉��了大量OpenSource Project的资源聚合。其中如Spring�Q?/p>

Hibernate的更新度非常高，出现什么和Spring有关的blog,article,project都会

马上被聚合�?/p>

5.IBM DeveloperWorks 传统、稳定的Java文章来源地�?/p>

6.JavaWorld 传统、稳定的Java文章来源地�?/p>

7.OnJava 传统、稳定的Java文章来源地�?/p>

8.Artima.com �c�M��于TSS而略逊，其中Spotlight 文章值得��x��Q�而Java News�?/p>

聚合了所有其他Java站点的大聚合�?/p>

9.JavaLobby 站内的Announcements 是大大小��Java Project的发布声明区�Q?/p>

Trips and Tricks 有很多的Tips�?/p>

10. No Fluff Just Stuff 的Blogs 聚合一直缺一个所有优�U�Java Blogger�?/p>

rss总聚合，NFJS�q�里勉强��一个�?br />

Ajaxian

一个接�q�于门户�c�d��的AJAX资源站点�Q�包括Ajax�C�Z��攉��Q�博客，论坛和教�E�等�{��?/p>

5. DHTML Goodies

6. Javascript Kit

7. Dynamic Drive

8. DHTML Site

9. Solutoire

10. DevSnippets

2008�q�国外最佳Web设计/开发技巧、脚本及资源

工具&Web应用

13个可能会让你�?#8221;Thank You”的必不可��的开源应�?/a>

14个免费工兯��你了解�ؓ什么�h们会攑ּ�讉K��你的�|�站

40+CSS生成�?/a>

74个我们可能已�l�忘记的适合�|�页设计师的很棒的Web应用

50+能提高你的网站速度和性能的技巧和资源

15个可以监视网站�h气的工具

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mike zeseler 2009-01-30 18:05 发表评论

中国java开源界

mike zeseler — Fri, 30 Jan 2009 09:59:00 GMT

1�?nbsp; Huihoo动力—当之无愧的老大

代表人物�Q?/strong>龙辉(Allen)�?/span>�E�勇(Peter)、杨�?/span>(Orbat)　

代表��目�Q?/span>JFox�{?/span>

官方�|�站�Q?/span>http://www.huihoo.org/

��评：说到java开源，大家不可能不知道Huihoo�Q?/span>Huihoo曄��创造了很多奇迹�Q�不��是�Ҏ��团队成员的技术水�q��是开源理��c��开源组�l�的��理�{�都可以说是最��的�Q?/span>JFox��目一直具有生命力�Q?/span>huihoo�q�么多年了也一直具有生命力�Q?/span>Allen�?/span>Peter�?/span>Orbat�{�对�q�个团队�q�么多年来的坚持及�A献，要选国内最值得推崇的开源团体，huihoo排在�W�一位可以说是当之无愧。因此，他们是最可爱的�h�?br style="font-family: " />

2�?/span>Jdon�?/span>高处不胜�?/span>

代表人物�Q?/span>彭晨�?/span>(板桥里�h)

代表��目�Q?/span>jdonframework

官方�|�站�Q?/span>http://www.jdon.com/

��评：作�ؓ国内�W�一个开源框架的发�v人，作�ؓ国内�W�一个敢于与国外框架叫板的板桥里人，他曾�l�带�l�大家很多很多的�ƣ喜及回忆，桥技术水�q�_��造诣�q�里��更不用说了�Q�他“ 一个开源�h的孤独告�?#8221;�Q�有�Ҏ��桑，有点心寒�Q?/span>jdon今天的现�Ӟ��是中国对待技术�h才的真实写照。无论如何，选中�?/span>Java开源界最可爱的�h�Q�板桥当之无愧�?br style="font-family: " />

3�?/span>Apusic OperaMasks�?/span>谁说开源不赚钱

代表人物�Q?/span>袁红岗　张勇

代表��目�Q?/span>OperaMasks

官方�|�站�Q?/span>http://www.operamasks.org/

　　��评：1000万�h民币的投入，一��?#8220;勇敢者的��C��?#8221;也算是在中国开源界掀起了一阉|�L澜，产品发布会上那一份䆾合同�Q�更是让同行的老��M��有点眼红。除��d��业因素不��_��q�两�?/span>Check out�?/span>OperaMasks的代码，也看了示例，表现非常不错�Q�值得深层�ơ的java开发�h员学习。老袁深厚的技术功底、老张卖力的全国�\演，公司�l�营战略的成功，OperaMasks能否发展成�ؓ一个最能适合中国国情的开源组�l�，让我们拭目以待�?br style="font-family: " />

　　4�?/span>EasyJF�?/span>后生可畏

　　代表人物�Q?/strong>蔡世�?/span>(大��)、吴嘉俊(stef_wu)、程�?/span>(天一)

代表��目�Q?/span>EasyJWeb

官方�|�站�Q?/span>http://www.easyjf.com/

　　��评：看了大��朋友的一些文章，看到EasyJF现在的发展，真真实实有一�U�后生可畏的感叹。他们有自己的专职团队，有网下办公室�Q�还有硬件设施，�q�拥有一��有�Ȁ情、好学的�q�轻��伙子们。虽然要得到中国��q��认可是很不容易的事情�Q�但搜烦一下带是发现国内已�l�有不少�|�站在用EasyJWeb做开发。因此，最可爱的�h当他们莫属，衷心希望他们能成功�?br style="font-family: " />

　　5�?/span>SpringSide�?/span>天才团队

代表人物�Q?/strong>肖桦(江南白衣)�?a style="font-family: " name="cac">陈俊(cac)、田�?/span>(差沙)

代表��目�Q?/span>SpringSide

官方�|�站�Q?/span>http://www.springside.org.cn/

��评：虽然只是站在春天的傍边，但已�l�带�l�了整天忙于�q�逐新技术、新潮流�?/span>Java�E�序员们很多极具参考�h值的东西。江南白衣同学可以算是一个天才般的�h物，技术的��d��、接受�ƈ译释新技术的速度、能力及水��^�Q�可以说是少��C��的少数。因此，SpringSide可以�U�得上最��h��偶像潜质的团队，Java开源界最可爱的�h�Q�他们当之无愧，希望他们能从“傍边”走到“中间”�?br style="font-family: " />

6�?/span>Buffalo�C�֌��?/span>��羃是精

代表人物�Q?/strong>陈金�z?/span>(Michael Chen)

代表��目�Q?/span> Buffalo

官方�|�站�Q?/span>http://buffalo.sourceforge.net/

��评：作�ؓ�W�一个国人开发的Ajax框架�Q�作��Z��个能把一直受java大拿们岐�?/span>javascript玩�{得如何熟悉的��目�Q�作��Z��个能几年坚持更新的开源项目，Buffalo是成功的�Q?/span>Michael Chen让我们体会到国内开源�A献者们执着与坚持。他是不是最可爱的�h�Q�谁是？

7、天乙社�?/span>—��n受开�?/span>动力

代表人物�Q?/span>laoer

代表��目�Q?/strong>天乙开源社�?/span>

官方�|�站�Q?/span>http://www.laoer.com/

��评：有多��开源项目的产品发布�?/span>8.0�Q�从jsp�?/span>struts1�?/span>struts2一路走来，一直能跟着新技术的步伐�Q�不断改�q�及完善。因此，当之无愧java开源界最可爱的�h�?br style="font-family: " />

8�?/span>CowNew开�?/span>�?/span>真有一点牛

代表人物�Q?/strong>杨中�U?/span>

代表��目�Q?/span>CowNewSQL

官方�|�站�Q?/span>http://www.cownew.com/

��评：看过杨中�U�同学的两篇文章�Q�我觉得他是可爱的。多数据库翻译引�?/span>CowNewSQL的�h值将在哪里体玎ͼ�CowNew能在何时�l�我们带来更多实用的东西�Q�值得大家期待。无论如何，他们的进步是有目��q��?br style="font-family: " />

9�?/span>CommonTemplate�?/span>值得期待

代表人物�Q?/strong>梁飞(javatar)

代表��目�Q?/span>CommonTemplate

官方�|�站�Q?/span>http://www.commontemplate.org/

��评：也许很多��Z��知道�q�个��目�Q�但他确实是一个很不错的模板引擎，金子��L��发光�?/span>时�?/span>。只要坚持，�怿�有一天梁飞同学会�l�大家带来更多的惊喜�?br style="font-family: " />

10、恩信—小公司也能开�?a href="http://www.tkk7.com/mikezeseler/">mike zeseler

代表人物�Q?/strong>刘有�?/span>

代表��目�Q?/strong>恩信开�?/span>ERP

官方�|�站�Q?/span>http://www.nseer.com/

��评：听过刘�ȝ��演讲�Q�从“捕鱼”�?#8220;授之以渔”�Q�从刘��M��p�d��q�作手法�Q�我觉得恩信可以成�ؓ很多�q�逐开源但又没有上千万资金来投入而��d��为是否参加开源而徘徊的老��M��的参考学习的案例。虽然没有技术牛人加盟，虽然�q��用稍为古老的技术体�p�，但既然开源了�Q�总能让我们学到很多东�ѝ��呵呵，所有最可爱的开源�h中，刘�ȝ��是算是最�q�长的了�Q�祝他们开�?/span>ERP大卖

mike zeseler 2009-01-30 17:59 发表评论

Hibernate入门

mike zeseler — Thu, 15 Jan 2009 11:49:00 GMT

摘要: 自己学��Y件编�E�不久，在学习中�ȝ��和记录啦一些学习的入门知识�Q�有不��之处�Q�请批评指正�? Hibernate入门指南 &nbs... 阅读全文

mike zeseler 2009-01-15 19:49 发表评论