Leon Fan's Weblog: All things about technology

Sun have opened Java Warehouse (warehouse only, Java Store is still US only) to 7 more countries besides US:

1. UK
2. Australia
3. India
4. China (PRC)
5. Sweden
6. Brazil
7. Russia

Developers from these countries can submit their free apps to Java Warehouse now and reach the US Java Store users.  Paid applications from outside of the U.S. as soon as Sun are able to get approval from the legal, tax, and privacy advisors.

Java Store will continue to be available in the U.S. only. Developers from outside the U.S. can use the Java Warehouse Catalog to preview how their applications are displayed in the Java Store. However, non-U.S. developers and users will not have access to the Java Store application itself.

You can get more detail information on Java Warehouse Developer Center Supported Locations.

Apple gain success on Appstore, which bring a new way to earn money for company and developer. Nowaday, there come up few store to follow similiar way Apple did. Here I just try to gather all kinds of application store or market link together for reference:

• Apple's Appstore

• The iPhone Developer Program Portal is designed to take you through the necessary steps to test your applications on iPhone and prepare them for distribution.
• iTunes Connect is used to submit your application and metadata to the App Store
• $99 annual fee for membership
  

• Sun's Java Store: 

• Java Warehouse Developer Center  to register in the Java Warehouse developer portal and start submitting desktop applications (US only currently).
• Java Store Developer Release for user to get the application (US only currently).
• $50 annual fee for membership
  

• Android Market

• Android Market

• $25 annual fee for membership

• Mobile Market
  

• Mobile Market  is a market held by China Mobile for OPhone which is based on Android system.
  

• Windows Market Place

• Windows Market Place is held by Microsoft

• Ovi

• Ovi a store from Nokia

• App World

• BlackBerry App World from RIM

• Atom

• Intel Atom Developer Program from Intel
  

How to invoke defaut email function in your application? You can do it in this way after SDK 3.0:

iPhone Tutorial - In-App Email

In case you are still work for 2.x version, you have to use openURL to send email:

Using openURL To Send Email From You App

For SMS function, there don't have a official SDK openned.  One possible way is using openURL function as same way for email:

sms:[target phone number] URL to open the SMS application.

But there are no indications on how to prefill a SMS body with text. Also, there have two other private ways to do it but it's illegal and couldn't upload to store:

 One is using 'AT' command, another way is using private framework for SMS.

Could you share it to me if you know other way can do it?

In these day, I am write a client to access web. But I met issue on one site who is using http redirection by returning http status code 302. It's common shortage for HTTPURLConnection which didn't put the cookie from response into new access request for the redirect url. 

I search solution from web and find one library jCookie. It's quite old project but it really solve my problem. Here is a sample code to use it's HTTPRedirectHandler to handle redirection case:

    String link = "http://xxx.com/xxx";
    URL url = new java.net.URL(link);

    HttpURLConnection connection = (HttpURLConnection) url.openConnection();

    connection.setRequestProperty("user-agent","    Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; zh-CN; rv:1.9.1.3)   Gecko/20090824 Firefox/3.5.3");
    connection.setDoOutput(true);
    connection.setRequestMethod("POST");

    StringBuffer sb = new StringBuffer();

    sb.append("xx=x&xx=x");

    OutputStream os = connection.getOutputStream();
    os.write(sb.toString().getBytes("US-ASCII"));
    os.close();

    HTTPRedirectHandler connection1 = new HTTPRedirectHandler(connection);
    connection1.connect();

    connection = connection1.getConnection();

    InputStream in = connection.getInputStream();
    BufferedReader breader = new BufferedReader(new InputStreamReader(in , "UTF8"));
    String str=breader.readLine();

    while(str != null) {
          //Analyse the html;
          str = breader.readLine();
    }

    breader.close();
    connection1.close()

There have one more thing  I did:  update one line in connection function for class HTTPRedirectHandler:

        huc.setFollowRedirects(false);  ->   huc.setInstanceFollowRedirects(false);

As store is already open to many countries in world, many developers start to i18n/l10n their applications to make their application can sell to customer all over the world.  There have a great article talking about iphone application i18n/l10n(Seemed you couldn't acces those links from China mainland):  

All things work!

• Locale identifier for Chinese

Usually, we use 'zh_CN' or 'zh_TW' as locale identifier for Simplified Chinese and Traditional Chinese. But we need use 'zh-hans' or 'zh-hant' for Simplified Chinese and Traditional Chinese on iphone. Please keep it in mind if you try to l10ned your application to Chinese.

In DocWeb 2.1, there have big feature: JavaFX API Doc Support.  Though JavaFX doclet api is kind of similiar to standard j2se doclet api, there still have some different.  We finally make it work by overcome following issues:

• Run customized doclet class under web context. There have an issue if you try it in jdk 1.6.
• Make sure JavaFX doclet api can work together with Java doclet.
• Handle more tags for JavaFX
  

 Just like it shown in pic. User can choose 'JavaFX 1.2' from left frame. Then they can search or navigate APIs by 'Class', 'Variables/Fields', 'Functions/Methods' and 'Packages' . Finally, use will saw similiar doc interface in DocWeb as I shown below.

Now, we already release DocWeb 2.1. Please enjoy those features on DocWeb site and feel free to share us your feedback or suggestion. We will make more user friendly and absoluately we need your help!

NSString 是 Object C 中常用的类。在这里，我搜集整理一些关于 NSString 的操作供参考：

NSString *t = @"test"

• 连接 

连接有三种方法：

NSString* string1; NSString* string2;

1. NString* compose = [NSString initWithFormat:@"%@,%@", string1, string2 ];

2. NString* compose = [string1 stringByAppendingString:string2];

3 . NString* compose = [string stringByAppendingFormat:@"%@,%@",string1, string2];

其中 format 的格式为：

'％＠'   是格式化 NSString 类型

%d, %D, %i 是格式化  32位有符号整数 (int)

具体见参考手册

• 转换

int 到 NSString:   [NSString stringWithFormat:@"%d", myInt];

NSInteger 到 NSString: [NSString  stringWithFormat:@"%d", [myNSInt intValue]];

As some unexpected maintenance activity from web host team,  the machine hosted DocWeb is down during this weekend.  I am very sorry for this. Today, I already started that machine to make DocWeb online.

There are few features in coming DocWeb 2.1. And I just finish those features for DocWeb 2.1.  Actually I got some feedback from users that they like the whole style very much but found couldn't bookmark those APIs. So we put Ajax back/forward/bookmarks support as one of highest features in this release.

Now, we partial support that feature in coming DocWeb 2.1. User can bookmark their favorite APIs in DocWeb. They can also click browser's back/forward button to view the their history page. The only limitation here is that we only support package/class link in left frame current.  You couldn't bookmark pages got by clicking method/field link in left. You also couldn't bookmark pages got by clicking link in right frame of page. Those limitations will be disappear maybe in DocWeb 2.2.

BTW, we already support most of popular browser:

• Internet Explorer
• FireFox
• Mozilla
  
• Safari
• Chrome
• Opera

Please let me know if it didn't work in your browser.

Here is one of early picture for your reference:

 The few difference user may feel when using the new version in detail:

• one is url change from 'DocWeb/#' to 'DocWeb/#r/CLDC 1.1/java.util.Random/columnMain'
• Second is title changed from 'DocWeb' to 'DocWeb-CLDC 1.1-java.util.Random'

We will release it very soon. Please keep in tune and enjoy it at that time!

Today, I tried to find a way to merge my two accounts in LinkedIn. It's make me disappointed that there is no easy way to do it. Here I just get some anwser from LinkedIn:

• Import one account information
• Close that one
• Send invitation to all connections in your first account to rebuild the connection with your second account

Not sure why they didn't provide a way to this. Do this break some thing in SNS's rule?

Web team decided put some servers into EOF.  DocWeb unfortunately is hosted on one of those servers. So we got a notification we need move DocWeb to new server. I was very busy on this thing last week:

• Apply a new virtual machine
• Setup GlassFish and do performance tunning
• Migrate all data from old server to new server
• Stress testing on new server
  
• Request old hostname doc.java.sun.com  point to new server's ip address

All of those jobs have been done last week. Now, our doc.java.sun.com  already point to that new server. You may aren't unaware of this migration as it is really running smoothly. Cheers!

这些年在 Sun 一直在工作之余，做了一些 Sun 技术相关的推广工作，基本上一年会有一俩次。一直没有时间整理一下所做的演讲，看看这些年自己在这方面的成长历程。还记得 2006 年在上海的 Sun 技术日上我做的演讲，那应该是我比较正式的在公开场合上做幻灯。上台时一看下面黑压压的一片听众，当时头就大了，下来后知道当时有 600 多人在下面听。现在我重新听当时的录音还能感觉到我当时是非常的紧张阿。经过这些年的历练，在今年的江苏省架构师的培训讲座上，我已经能很游刃有余的控制局面了。现在回想所有这些事件，还历历在目。

1、2009年7月26，在江苏南京受邀为南京虚拟软件园做“如何用 J2EE 架构企业应用”。

这里是我的幻灯：PDF 格式 。  很高兴 Tina 为我拍了几张照片：

2、2008年在复旦的大学教师培训

我记得做了两个演讲，一个是 JavaFX 概论，另外一个是 NetBeans 移动上的游戏开发。现在找不到幻灯了，只有等啥时找到补上了。

3、2007年3月22日在成都的 Sun 开发者大会上，当时又 200 多人参加巴。我做了两个演讲：

- 轻松 AJAX，这里是幻灯：PDF 格式

- JavaSE 6 新功能介绍 ，这里是幻灯：PDF 格式

可惜当时没留下什么影像阿，现在都不记得当时还有谁和我一起主持的这次活动。

4、2006年9月22-24日在上海，27-29日在北京的 Sun 技术日上做的“如何'掌'控您的企业应用”。

这里是我的幻灯：PDF 格式 。  感谢同事为我照相，我还能找到一张：-）

这次演讲有录音，在 SDN 的网站上的这里可以听到。可惜该音频有 50 M，我不能直接上传到博客上。

Now, there already have NetBeans plugin for Android. You can following the instruction to setup Android development plugin in NetBeans.

The next step is downloading Android SDK from Google and zip it to your favorite directory.

The rest steps you can refer Troubleshooting page and Introducing Android Development with NetBeans

One thing need be attention:

there have a bug in Android emulator setup. You need use a workaround:

Go in console to <SDK Path>/tools and type "android create avd -n <name> -t <target>". You can get target id by running 'android list-targets'.

Here is running result on my Mac, I make it work in NetBeans 6.7:

By the way, the emulator starting up process seemed a little slow, you just need wait for a while when click 'Run' in NetBeans.

Here, I try to list some debugging tools for different kinds of browser:

• Internet Explorer

• There have script editor in Microsoft Office which we can use to debug javascript which is stable than Microsoft Script Debugger according to my experience. You can install it from Microsoft Office(eg, Office 2003). 
• Internet Explorer Developer Toolbar is a tool to help you explore and understand web page, such as view and modify DOM, finding the css style used on an element
• Microsoft Visual Studio include heavy tool to debug javascript and view DOM tree which is maybe your another option.
• FireFox
• FireBug is wonderful tools for javascript debug and web page explore
• Chrome
• It come from WebKit and Google provide an embed tools in it. You can get javascript debugger tool shown below: