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I'm Back !

冰雨 — Mon, 31 May 2010 10:42:00 GMT

摘要: �q�是当前博客比较��行的时候在大学使用的博客�̎�? 毕业后就一直没使用�q�了, 最�q�整理邮��׃��的资�? 居然又找到这里了, blogjava.net在国内还是一个很好的Java技术文章分享��^�? 以后有关Java的技术文章也�?x��)在�q�里更新! 阅读全文

冰雨 2010-05-31 18:42 发表评论

JDK 6 探秘之二: 自定义国际化(I18N)服务

冰雨 — Fri, 20 Apr 2007 04:50:00 GMT

摘要: 在JDK 6 �? 利用其提供的service provider interfaces (SPI) 可以做到很好的国际化处理, 以前你只能��用标准的时区和各�U�符�? 如果你所在的地区不幸不再�q�些标志时区�? 或者货币符号也不在其中, 那么你就无能为力�? 现在有了JDK 6 ,我们可以自定义这些服务的提供者了. 阅读全文

冰雨 2007-04-20 12:50 发表评论

about java keyword volatile

冰雨 — Thu, 31 Aug 2006 09:17:00 GMT

在java �U�程 3rd�?.2讲到了一个少用的关键�?volatile.

However, Java provides a more elegant solution: the volatile keyword. If a variable is marked as volatile, every time the variable is used it must be read from main memory. Similarly, every time the variable is written, the value must be stored in main memory. Since these operations are atomic, we can avoid the race condition in our example by marking our done flag as volatile.

在tij中也有讲�q?/p>

Thinking in java �? 13.7 范例 CanStop 里面有代�?
//Must be volatile:
private volatile boolean stop = false;
�q�里boolean�c�d��应该��已�l�是原子操作了，不需要再保证了�?

书里�? stop标志必须�?b style="COLOR: black; BACKGROUND-COLOR: #ffff66">volatile的，以便run()�Ҏ(gu��)��肯定看到他（否则的话�Q�这个值可能本地缓�?

我猜�? volatile表示�q�个值可能被别的�U�程改变�Q�所以被标志�?b style="COLOR: black; BACKGROUND-COLOR: #ffff66">volatile的变量，每次都是从存储区中读取变量对应的��|��而不是在该线�E�中本地�~�存的倹{��因为本地缓存的��g��能及(qi��ng)时反映其他线�E�对�q�个变量的媄(ji��ng)响。 �?br />

在线�E�中该关键字�q�是�?x��)用到�?.

冰雨 2006-08-31 17:17 发表评论

最�q�想研究一下DWR 攉��一些从入门到精通的�p�d��资料

冰雨 — Thu, 13 Jul 2006 07:55:00 GMT

摘要: 阅读全文

冰雨 2006-07-13 15:55 发表评论

�E�序员自创的一首歌�Q�“Java EE 5�?

冰雨 — Fri, 30 Jun 2006 21:15:00 GMT

Sun公司一名员工自己创作的歌，关于Java EE 5�Q�很有意思的一首歌�Q�程序员业余生活也可以这么丰富！

地址�Q?a >http://tap.javalobby.org/javaee5.mp3

歌词�Q?br />Ladies and gentlemen, this is Java EE 5!

One, two, three, four, five
There's a technology I use day and night
For my application with a web frontend
They told me to use .Net
But I really don´t wanna

So many bugs I fixed last week.
My code is neat and talk is a cheap
I like Glassfish, JSF, persistence API
And as I continue you know they´re gettin´ sweeter

So what can I do I really beg you my Lord
To me codin' it´s just like a sport
All the bad code from the past, let me dump it
Please set in the trumpet

A little bit of injection in my life
A little bit of persistence by my side
A little bit of NetBeans is all I need
A little bit of EJB's what I see
A little bit of standards in the sun
A little bit of XML all night long
A little bit web services here I am
A little bit of code makes me real man

This is Java EE 5!

Jump up and down and move your code around
Shake your head to the sound bury bad code under ground
Move one step left and one step right
One to the front and one to the side
Refactor it once and refactor it twice
If it looks like this you're doin´ it right

A little bit of injection in my life
A little bit of persistence by my side
A little bit of NetBeans is all I need
A little bit of EJB's is what I see
A little bit of standards in the sun
A little bit of XML all night long
A little bit web services here I am
A little bit of code makes me real man

This is Java EE 5!

�q�不错哦.

from csdn

冰雨 2006-07-01 05:15 发表评论

最新消�?,开源嵌入式数据�?Derby(JavaDB) �l�定在JDK 1.6�?

冰雨 — Sun, 18 Jun 2006 10:48:00 GMT

如下:

Source: Francois Orsini's Blog
Story Link: http://weblogs.java.net/blog/forsini/archive/2006/06/java_db_is_now.html

Francois Orsini has announced that Apache Derby has become bundled with the latest 1.6 JDK. "...yes it has become a reality! - It is a very exciting event indeed to have an Open Source Java Database System bundled into Sun's *latest* 1.6 JDK (Mustang build 88 to be more precised), and at no cost."

相关�q�接:

学习(f��n)使用Java DataBase (Derby) -- 嵌入式数据库

 在derby(Java DB) 中操�?clob �?blob

关于关闭Java DB(Derby)时抛出异常的问题

冰雨 2006-06-18 18:48 发表评论

使用NSIS(Nullsoft Scriptable Installation System)安装制作软�g

冰雨 — Tue, 13 Jun 2006 05:02:00 GMT

使用NSIS(Nullsoft Scriptable Installation System)安装制作软�g

刚才在看 �E�序员修��g��步曲: �W�三�?��目自动化之�?--- How to build, deploy, and monitor java applications. 一�? 看到如何制作安装�E�序. 大家都应该知�? java�E�序可以直接打包为jar文�g,可以直接执行,所以一般不用制作安装程序的, 不过��Z��l�win用户一个良好的感觉,制作一个安装程序还是不错的, 看到书上介绍使用Nsis来制�? 要写教本文�g,�q�好有工具可以��?感觉不是很难, 用百度搜了一个教�E? 呵呵原来是很��单的, ��q��着做了一个刚刚写完的 AES高��加密标准 �?java版实现的安装�E�序. 呵呵感觉很专业��? 可以下蝲可执行文件看�? http://www.hexiao.cn/Aes_java_Setup.rar

netboy写的 nsis的教�E?http://www.hexiao.cn/boblog/p/nsicToturialBasic.php

冰雨 2006-06-13 13:02 发表评论

Breezy��?-- 快速开发Swing�E�序!

冰雨 — Sun, 04 Jun 2006 14:33:00 GMT

Breezy��?-- 快速开发Swing�E�序!

Breezy:
sf ��目主页: http://sourceforge.net/projects/breezy/

下蝲: http://sourceforge.net/project/showfiles.php?group_id=158540&package_id=177653&release_id=412125

用户讨论�? http://www.hexiao.cn/bbs/thread.php?fid=9

大家都知道开发Swing�E�序有三大难�?
布局讄��,事�g处理,和数据绑�? 使用netbean中的新的布局��理器已�l�解决了�W�一个问�? 那么后面两个�?

Breezy ��是用来��化后面两个问题而推出的.
下面我们先来看看一个简单的例子:

package test;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;

import javax.swing.JButton;
import javax.swing.JFrame;

import net.sf.breezy.event.EventInstaller;
import net.sf.breezy.event.annotations.ActionPerformed;
import net.sf.breezy.event.annotations.DefAction;

@SuppressWarnings("serial")
public class TestBreezy extends JFrame {

private JButton button = new JButton("Test Breezy!");

public TestBreezy() {
this.setLayout(new BorderLayout());
this.add(button,BorderLayout.CENTER);

// 用来处理所有的Breezy的Annotations
EventInstaller.processEventAnnotation(this);

this.setSize(400, 300);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

EventInstaller.setAction(button, "action");
}

// button的事件响应方�?br /> @ActionPerformed("button")
public void myButtonAction() {
System.out.println("God, this is terrific!");//讄��另外一个事�?br /> }

// 使用id注册另外一个事件响应方�?br /> @DefAction(id="action", name="Button")
void action(ActionEvent e) {
System.out.println(e + ":" + e);
}

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
JFrame frame = new TestBreezy();
frame.setVisible(true);
}

}

怎么�? 看�v来不错吧.

现在Breezy几乎支持所有的Swing EventListeners. 详细情况��h��看类net.sf.breezy.event.annotations.*

当然�? 作�ؓ(f��)一个优�U�的框�?�q�要有可扩展�?在Breezy中开发者还可以自定义自��q��事�g响应Annotation 来实现自��q��功能. 详细情况��h��看API.

数据�l�定问题主要 ��是 JTable 和JTree的问�?
使用Breezy来处理该问题,有点�c�M��于Hibernate中的xml映射数据库属性字�D�差不多. 可以很方便的映射.
��L(f��ng)��下面的例�? 和Breezy文档:

package test;

import java.util.Date;

public class Name {
private String name = "Starwhisperer";

private Date time = new Date();

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Date getTime() {
return time;
}

public void setTime(Date time) {
this.time = time;
}

}

User.java
package test;

import java.util.Date;

import net.sf.breezy.datatable.TableField;

public class User {
@TableField(head = "名称", editable = false)
private String name;

@TableField(head = "�q�龄", editable = false, type = "number")
private int age;

@TableField(head = "阵营", type = "boolean", editable = false)
private boolean light;

@TableField(head = "旉��", type = "time", pattern = "yyyy/MM/dd")
private Date date = new Date();

@TableField(head = "名称", property = "name", type="string")
private Name nameBean = new Name();

public Name getNameBean() {
return nameBean;
}

public void setNameBean(Name nameBean) {
this.nameBean = nameBean;
}

public boolean isLight() {
return light;
}

public void setLight(boolean light) {
this.light = light;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Date getDate() {
return date;
}

public void setDate(Date date) {
this.date = date;
}

}

DataTableTest .java

package test;

import java.awt.BorderLayout;
import java.util.LinkedList;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JScrollPane;

import net.sf.breezy.datatable.DataTable;
import net.sf.breezy.datatable.DataTableScrollPane;

public class DataTableTest {
private JFrame mainFrm = new JFrame();

protected void setUp() {
mainFrm.setSize(100, 600);
mainFrm.setLocationRelativeTo(null);
mainFrm.setLayout(new BorderLayout());

mainFrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args) {
DataTableTest test = new DataTableTest();

test.setUp();
test.testTable();
}

public void testTable() {
java.util.List list = new LinkedList();
for(int i = 0; i < 120; i ++) {
User u = new User();

u.setAge(33);
u.setName("Cain " + i);
list.add(u);
}
DataTableScrollPane pane = DataTable.getEntityTablePane(list, User.class);

mainFrm.add(pane, BorderLayout.CENTER);
mainFrm.setVisible(true);
}
}

映射文�g:datatable-mappings.xml

也是很简单的�? 关于JTree的应用也是很��单的�? 详细情况��h��看用��h��?

更多信息请关�?用户交流论坛: http://www.hexiao.cn/bbs/thread.php?fid=9

冰雨 2006-06-04 22:33 发表评论

Google发布AJAX开发工�?Google Web Toolkit

冰雨 — Wed, 17 May 2006 13:17:00 GMT

Google Web Toolkit

- Build AJAX apps in the Java language

Download Google Web Toolkit (GWT) http://code.google.com/webtoolkit/

Google Web Toolkit (GWT) is a Java software development framework that makes writing AJAX applications like Google Maps and Gmail easy for developers who don't speak browser quirks as a second language. Writing dynamic web applications today is a tedious and error-prone process; you spend 90% of your time working around subtle incompatabilities between web browsers and platforms, and JavaScript's lack of modularity makes sharing, testing, and reusing AJAX components difficult and fragile.

GWT lets you avoid many of these headaches while offering your users the same dynamic, standards-compliant experience. You write your front end in the Java programming language, and the GWT compiler converts your Java classes to browser-compliant JavaScript and HTML.

Learn more ��

GWT的特�?

Dynamic, reusable UI components

Create a Widget by compositing other Widgets. Lay out Widgets automatically in Panels. Send your Widget to other developers in a JAR file.
Really simple RPC

To communicate from your web application to your web server, you just need to define serializable Java classes for your request and response. In production, GWT automatically serializes the request and deserializes the response from the server. GWT's RPC mechanism can even handle polymorphic class hierarchies, and you can throw exceptions across the wire.
Browser history management

No, AJAX applications don't need to break the browser's back button. GWT lets you make your site more usable by easily adding state to the browser's back button history.
Real debugging

In production, your code is compiled to JavaScript, but at development time it runs in the Java virtual machine. That means when your code performs an action like handling a mouse event, you get full-featured Java debugging, with exceptions and the advanced debugging features of IDEs like Eclipse.
Browser compatible

Your GWT applications automatically support IE, Firefox, Mozilla, Safari, and Opera with no browser detection or special-casing within your code in most cases.
Interoperability and fine-grained control

If GWT's class library doesn't meet your needs, you can mix handwritten JavaScript in your Java source code using our JavaScript Native Interface (JSNI).

Google大全

冰雨 2006-05-17 21:17 发表评论

Java Pet Store 开始全面��?Web 2.0 技�?

冰雨 — Tue, 16 May 2006 13:58:00 GMT

Java Pet Store 开始全面��用Web 2.0 技�?/b>

伴随着Java EE 5 SDK(下蝲) �?/strong>发布,最新的 Pet Store (最初版) 开始全面启�?Web 2.0 技术�?

Sean �?Geertjan 都曾�l�对此有所介绍�?Alexis �q�制作了一个短片向�(zh��n)�展�C�怎样�?NetBeans 中启�?br />
Pet Store�Q?大型 �?��型�Q��?

不知道Java中的Web2.0 是否来的晚了一�? 你怎么看待Web2.0 在JavaEE中的使用�?

AJAX, PetStore ,JavaEE

冰雨 2006-05-16 21:58 发表评论