In my last post, i just shared only the release name of  all JDKs . but in this post i am just updating all the features of each release. I hope it could help you all.

JDK 1.0 (january 23, 1996) oak
– Initial release

JDK 1.1 (february 19, 1997)
– Retooling of the AWT event model
– Inner classes added to the language
– JavaBeans
– JDBC
– RMI

J2SE 1.2 (December 8, 1998) playground
This and subsequent releases through J2SE 5.0 were rebranded retrospectively Java 2 & version name “J2SE”
(Java 2 platform, Standard edition) replaced JDK to distinguish the base platform from
J2EE (java 2 platform, enterprise edition) and J2ME (java 2 platform, micro edition).

- Strictfp keyword
– Reflection
– Swing api integration into the core classes
– JVM equipped with a jit compiler
– Java plug-in
– Java IDL
– An IDL implementation for corba interoperability
– Collections Framework

J2SE 1.3 (may 8, 2000) kestrel
– Hotspot jvm included
– JavaSound
– JNDI included in core libraries
– Java platform debugger architecture (jpda)
– RMI was modified to support optional compatibility with corba

J2SE 1.4 (february 6, 2002) merlin
– assert keyword
– Regular expressions
– Exception chaining (allows an exception to encapsulate original lower-level exception)
– Internet protocol version 6 (IPV6) support
– Non-blocking nio (new input/output)
– Logging API
– Image i/o api for reading and writing images in formats like jpeg and png
– Integrated XML parser and XSLT processor (JAXP)
– Integrated security and cryptography extensions (JCE, JSSE, JAAS)
– Java web start

J2SE 5.0 (september 30, 2004) tiger [originally numbered 1.5]
– Generics: provides compile-time (static) type safety for collections and eliminates the need for most typecasts (type conversion).
– Metadata: also called annotations; allows language constructs such as classes and methods to be tagged with additional data, which can then be processed by metadata-aware utilities.
– Autoboxing/unboxing: automatic conversions between primitive types (such as int) and primitive wrapper classes (such as integer).
– Enumerations: the enum keyword creates a typesafe, ordered list of values (such as day.monday, day.tuesday, etc.). Previously this could only be achieved by non-typesafe constant integers or manually constructed classes (typesafe enum pattern).
– Swing: new skinnable look and feel, called synth.
– Var args: the last parameter of a method can now be declared using a type name followed by three dots (e.g. Void drawtext(string… Lines)). In the calling code any number of parameters of that type can be used and they are then placed in an array to be passed to the method, or alternatively the calling code can pass an array of that type.
– Enhanced for each loop: the for loop syntax is extended with special syntax for iterating over each member of either an array or any iterable, such as the standard collection classesfix the previously broken semantics of the java memory model, which defines how threads interact through memory.
– Automatic stub generation for rmi objects.
– Static imports concurrency utilities in package java.util.concurrent.
– Scanner class for parsing data from various input streams and buffers.
– Assertions
– StringBuilder class (in java.lang package)
– Annotations

Java SE 6 (december 11, 2006) mustang
sun replaced the name “J2SE” with java se and dropped the “.0″ from the version number.
Beta versions were released in february and june 2006, leading up to a final release that occurred on december 11, 2006.
The current revision is update 14 which was released in may 2009.

- Support for older win9x versions dropped.
– Scripting lang support: Generic API for integration with scripting languages, & built-in mozilla javascript rhino integration
– Dramatic performance improvements for the core platform, and swing.
– Improved web service support through JAX-WS JDBC 4.0 support
– Java compiler API: an API allowing a java program to select and invoke a java compiler programmatically.
– Upgrade of JAXB to version 2.0: including integration of a stax parser.
– Support for pluggable annotations
– Many GUI improvements, such as integration of swingworker in the API, table sorting and filtering, and true swing double-buffering (eliminating the gray-area effect).

Java se 6 update 10
A major enhancement in terms of end-user usability.
– Java Deployment Toolkit, a set of javascript functions to ease the deployment of applets and java web start applications.
– Java Kernel, a small installer including only the most commonly used jre classes. Enhanced updater.
– Enhanced versioning and pack200 support: server-side support is no longer required.
– Java quick starter, to improve cold start-up time.
– Improved performance of java2D graphics primitives on windows, using direct3D and hardware acceleration.
– A new Swing look and feel called NIMBUS and based on synth.
– Next-generation java plug-in: applets now run in a separate process and support many features of web start applications.

Java se 6 update 12
This release includes the highly anticipated 64-bit java plug-in (for 64-bit browsers only), windows server 2008 support,
and performance improvements of java and JAVAFX applications.

Java se 7 (Dolphin)

I will update you all about the features of JDK 7.0 in my next post.

• Playground (1.2),

• Kestrel (1.3),

• Merlin (1.4),

• Tiger (5.0),

• Mustang (6),

• Dolphin (7)

There are many features are available in this tool and also easy to develop the paintings.

http://www.sumopaint.com/web/

I found very interesting information about Jetty WebServer.

Link : http://www.mortbay.org/jetty/

Jetty is an open-source, standards-based, full-featured web server implemented entirely in Java. It is released under the Apache 2.0 licence and is therefore free for commercial use and distribution. First created in 1995, Jetty has benefitted from input from a vast user community and consistent and focused development by a stable core of lead developers. There are many more examples of Jetty in action on the Jetty Powered Page that has selections from among the tens of thousands of production Jetty instances. However, as Jetty aims to be as unobtrusive as possible, countless websites and products are based around Jetty, but Jetty is invisible!

Full commercial support, training and development services for Jetty and Jetty-based projects are available from Webtide.

Jetty can be used as:

• a stand-alone traditional web server for static and dynamic content
• a dynamic content server behind a dedicated HTTP server such as Apache using mod_proxy
• an embedded component within a java application

This flexibility means that Jetty can be encountered in a number of different contexts:

• shipped with products to provide out-of-the-box useability eg Tapestry, Liferay
• distributed on CDs with books to make examples and exercises ready-to-run
• incorporated into applications as a HTTP transport eg JXTA, MX4J
• integrated as a web container in JavaEE app servers eg JOnAS, Geronimo, JBoss, JFox
• included as a component of an application eg Continuum, FishEye, Maven

Some of the defining features of Jetty are:

I hope us we all very familiar of installing JAVA and configuring with windows.

But, when we are installing with new PC, we use to get some new problems.

For example, I brought a new PC. I just installed JAVA and Maven in my system. I have set all needed environment variables. But when I did JAVA in command prompt, it’s working absolutely fine. but JAVAC is not working. I use to get the message like “javac not recognized as an internal or external command”.

Then after some googling in net I got to know that we have to set some PATH variable also for to run JAVAC. My example Path variable is:

%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;

%PATH%;%JAVA_HOME%\\bin;%M2_HOME%\\bin

I believe this will help some ppl who new to java

2Day i got a forward mail from my friend Vidya. It’s really very interesting to share with you all. We where waiting for IPhone from last year but i hope now people will get disappointment.

This features might be missing in Indian phones.

1. Can’t copy & paste text.

2. Except for the first and last SMS messages in a session, iPhone text messages lack timestamps.

3. iPhone’s Safari browser does not support Java or Flash, so you can’t watch videos (except for YouTube ones) or see parts of certain websites.

4. The on-screen keyboard can’t be used in landscape mode in applications other than Safari.

5. Vibrate mode for incoming text messages is weak.

6. Incoming text messages appear word-for-word on the screen upon receiving them, which may be a privacy issue for some. (Update: Here’s a sort of solution.)

7. No Undo function for when you’ve accidentally erased or mistyped text.

8. Scroll bars don’t appear in some text fields in the browser, and there are no arrow keys to maneuver through text.

9. Can’t save usernames and passwords in Safari.

10. The YouTube app does not allow you to view or post comments on videos.

11. Can’t download or save Word documents, PDF files, or any other file for that matter. Why not add a My Documents folder?

12. No spell check feature for web forms.

13. Can’t send more than one image in an email.

14. Except for in the Camera Roll, photos can’t be edited or removed directly from the iPhone. You have to edit them on your computer and then re-sync them.

15. The iPhone lacks a Find function for sorting through contacts, e-mails, calendar appointments, notes, etc.

16. Can’t update your Facebook status via iPhone’s Safari browser. Facebook is a fast-growing social network, so iPhone should support it. (Update: Facebook now has an iPhone version of the site, located at iphone.facebook.com)

17. No mass edit feature for handling calendar items, notes and e-mails.

18. Can’t search within web pages in the browser.

19. Its 3-day, expensive battery replacement plan.

20. Can’t highlight text.

21. Limited ringtones. Can’t set songs as ringtones. (Update: Apple now lets you convert some songs into ringtones via iTunes for $0.99 each.)

22. Difficult to rewind and fast-forward through long audio and video files (like audiobooks and TV shows or movies).

23. No AIM or iChat application.

24. One too many steps to dial a contact. (Update: In a software update, Apple added a feature that lets you double tap the home button to access your Favorites list of contacts.)

25. Because it is recessed, the headphone jack is incompatible with non-Apple headphones. Griffin’s headphone adapter can solve this problem.

*Bonus* – MORE things wrong with the iPhone

Here are a few more things wrong with the iPhone, as readers have pointed out in the comments below.

26. iPhone’s camera is archaic (no zoom, poor image stabilization, poor quality in low-lit areas).

27. No speed dial or voice dial functionality.

28. Cannot add attachments to emails.

29. Can’t use iPhone as a hard drive storage device, unlike the iPod.

30. Can’t change the sound notifications for email, voicemail, etc.

31. Can’t delete individual entries from the recent calls list without deleting them all, a potential privacy issue.

32. No 3G data speeds. EDGE is slow at times.

33. Cannot send photos via text messages.

34. Cannot send mass text messages. (Update: Apple added mass text messaging to the iPhone via firmware update 1.1.3)

35. iPhone lacks a video camera. (See my article on why mobile video is important)

36. No tasks or To-Do widgets.

37. No support for games.

38. Can’t disable auto-correct on the keyboard. Every time it makes a suggestion you don’t want, you have to tap X to cancel it, which can slow down typing a lot.

39. iPhone’s calculator lacks a backspace, so you have to clear the entire process if you accidentally touch an unintended digit.

N.B: If you still want to buy an iphone then hang on…let the prices slash. Surely 31k(India) is not worthy for the above features lacking in a phone.

Checkstyle is a development tool to help programmers to write Java code that adheres to a coding standard. It automates the process of checking Java code to spare humans of this boring task. This makes it ideal for projects that want to enforce a coding standard.

Checkstyle is highly configurable and can be made to support almost any coding standard. An example configuration file is supplied supporting the Sun Code Conventions. As well, other sample configuration files are supplied for other well known conventions.

A good example of a report that can be produced using CheckStyle and Maven

I prefer to use geosoft java coding conventions always. You can download CheckStyle from here.

Procedure to integrate CheckStyle with OpenNMS Maven:

I believe us all familiar to use Maven. So I am just directly going for CheckStyle integration.

While compiling OpenNMS code I used CheckStyle to generate Static code Analyze report.

To generate the Checkstyle report as part of the Project Reports, add the Checkstyle plugin in the <reporting> section of openNMS root pom.xml .

<project>
  ...
  <reporting>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-checkstyle-plugin</artifactId>
      </plugin>
    </plugins>
  </reporting>
  ...
</project>
 
I used geosoft check file so I changed the above configuration as per my need

 

Then, execute the site plugin to generate the report. Use the following command in command line.

mvn site

We can also generate the Checkstyle report by explicitly executing the checkstyle:checkstyle goal from the command line. It is not required to specify the Checkstyle plugin in your pom.xml unless you want to use a specific configuration. . Use the following command in command line.

mvn checkstyle:checkstyle

To specifically configure the Checkstyle plugin, we need to add it in the <build> section of your pom.xml as shown in the sample below.

Note: The generated report will be saved under target\site folder of each project folder. example : opennms-model\target\site

Reference Links:

http://maven.apache.org/plugins/maven-checkstyle-plugin/checkstyle-mojo.html#outputDirectory

http://maven.apache.org/plugins/maven-checkstyle-plugin/usage.html

http://maven.apache.org/plugins/maven-checkstyle-plugin/

]]> http://experiencesharing.wordpress.com/2008/08/27/opennms-with-checkstyle/feed/ 0 Annu http://experiencesharing.wordpress.com/2008/08/26/about-google-adsense-again/ http://experiencesharing.wordpress.com/2008/08/26/about-google-adsense-again/#comments Tue, 26 Aug 2008 12:40:05 +0000 http://experiencesharing.wordpress.com/?p=55 ]]> Adsense is an advertising program run by Internet giant Google. Google Adsense allows you (blog owner) to sell advertising space on your blog. The program enables you to display relevant text and banner ads on your blog”s content pages. Banner ads are the most common form of online advertising displayed at the top of many blog pages. Google pays you a fee when the visitor clicks on the ad.

When you join the Adsense program, you get access to Adsense for content which places ads on your content pages. Because the ads are targeted to what visitors are looking for on your blog or they match the interests of the visitors your content attracts, you earn and at the same time enhance your content pages. Google uses its vast search technology resources to serve ads based on blog content. In this regard, Adsense has become a popular choice for placing advertisements on a blog because the content of the ads is relevant to the blog. For example, ads for kitchen utensils will appear on a blog post about healthy cooking. Google has an extensive inventory of ads for all categories, business, practically for all kinds of content. If Google is unable to display targeted ads on your blog page, you can display a default ad of your choice.

A companion to the Adsense for content is the Adsense for search. It allows you to add a Google search box on your pages. This keeps the visitors on your blog longer since they can search from right on your blog. When a visitor searches the web using the search box, Google shares any ad revenue it makes from those searches with you and you shell nothing to participate.

Another recent addition is the Adsense for feeds. This runs on RSS and Atom feeds. RSS and Atom feeds are standards for publishing regular updates to blog-based content. Ads are displayed in the most suitable feed articles. You are paid for your blog”s original content; visitors see appropriate advertising and more relevant feeds to choose from.

How to Join

There is no rigid criteria to conform to for acceptance into the Google Adsense program, unlike other online ad networks that place minimum traffic requirement to be accepted. The only real criterion is acceptable content. Of course, any ad program wants to attract quality content blogs only. Assuming you already have a blog on which you can include Adsense links, you first need to be accepted into the program. The first step is to go to sign up. Google will review your blog to find out if you have the necessary traffic and the content that would bring in sufficient clicks to make your taking part in the program beneficial to Google and to you.

Once you are accepted, all you need is a bit of javascript code to incorporate the advertisements into the accepted blog site. Google does the rest like providing appropriate ad links from its inventory of clients to your blog. Targeted ads will start showing up on your blog.

How It Works

There are two sides to Google advertising ? one for advertisers selling a product or service called Adwords and Adsense for blog publishers. Advertisers pay Google to have their ads designed using Adwords appear next to the search page results in Google and a list of significant keywords for their offerings. Google will display an ad only if the provided keywords conform to a visitor search. An advertiser pays Google on a cost per click (CPC) basis. This means an advertiser pays only for that ad if the visitor clicks on the ad and visits the advertiser’s site. Advertisers compete with one another to buy search keywords usually from five cents and above. Nevertheless, Google also takes into consideration the search engine ranking of the advertiser blog, so no one site can just buy keywords. For example, a purchase of the keywords “digital camera” produces ads next to Google search result in its home page. Said purchase also shows Adsense ads for digital cameras on other blogs where digital cameras are mentioned.

For their part, blog publishers using Adsense create relevant pages. Google sends out Mediabots (digital robots) which use special algorithms to crawl the host blog page and evaluate the content to determine what keywords are relevant and report the result to Google’s ad server which then serves the appropriate ads. Blog publishers get paid a percentage of the fee that Google receives from the advertiser. This is done through a combination of a pay per click (PPC) and pay per impression basis. Impression is the number of times a specific ad has been displayed. A blog publisher is reimbursed at a fixed rate per thousand impressions. If a page isn’t significant enough, a blog publisher doesn’t get paid as much. There is no charge for the blog publisher to join Adsense. All costs are covered by the advertiser who participates in Adwords.

How Much Money It Makes

The amount of money you (blog publisher) can expect from Google Adsense depends upon several factors. If your blog draws tons of traffic and you focus on a particular niche, Google will serve ads that appeal to visitors of your site. For instance, if you maintain a popular blog devoted to portable media player, you can make a windfall because of the high level of competition for related keywords. Rates for competitive keywords can exceed $1 which impacts your blog”s earning potential. Conversely, if you are in a less competitive niche, you get occasional traffic only, thus less visitors click on your ads which equates to less money earned.

How much each advertisement pays per generated click is also another important factor. Each Adsense ad is not worth the same. An ad may give you ten cents while another may give you $1 per click. It depends on the demand for that kind of ad. If a number of advertisers are bidding for the same advertising space, the advertiser offering the most per click will get their ad displayed first.

Ad formats and placements influence revenue. Placing ads on the right part of the blog page is significant so that visitors looking at your page will see the ad, at the same time it will be not be overly intrusive to put visitors off.

Fundamentally though, it is all about content. To make money from Adsense, you have to know what your visitors are looking for. It may be information on a topic, a product they want to buy or a service they want to avail of and entertainment. Offering visitors good content will generate highly relevant ads which in turn will draw more clicks on the ads displayed. To optimize content, the same basic rules for search engine optimization apply.

Google doesn’t publish the percentage it takes as a commission and only displays what the blog owner receives in member reports. However, you can make a rough estimate. The average click through rate (CTR) for online advertising is generally around 0.5 to 1%. CTR is the rate at which visitors click an advertisement usually calculated as a percentage of ad impressions (number of times a specific ad has been displayed). What each click pays is dependent on the content and keywords that are generating the ads being served.

Although Google doesn’t release the amount it pays for keywords, you can sign up as an advertiser on top of being a participant in the Adsense program for $5 and see for yourself how much advertisers are paying Google for various click through. For example, a thousand page views with Google ads on them per day, at 1% click through rate and 25 cents per click will yield $2.50 per day. Not a lot but it can cover hosting fees or service fees.

Google Adsense is not a get rich quick program. But there are documented cases of bloggers earning as much as $5,000 a month and more. In fact, Jason Calacanis sold his blog network, Weblogs Inc. for a whopping $25 – $40 million on Google Adsense revenues of $1 million yearly. There isn’t any sense why a blogger can’t earn much from Google Adsense program. Definitely, there are thousands of dollars worth of reasons to make money from Google Adsense.

Did you find this article useful? For more useful tips & hints, Points to ponder and keep in mind, techniques & insights pertaining to Google Adsense, Do please browse for more information at our website :-

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From last week I just started to work with OpenNMS. It’s such a wonderful web based network discovery tool. It has lot of features then other NMS products.

I downloaded the version 1.5.91 from OpenNMS download server. Compiled with maven and added with eclipse workbench. Every thing works fine except mail notification. After some RND on this, finally i solved the problem. I used gmail smtp server.

All open NMS configurations related files are found under etc folder of openNMS. To enable mail notification we need to do some changes in the configuration files.

Edit Javamail-configuration.xml to set SMTP information

org.opennms.core.utils.fromAddress=frommailid@gmail.com

org.opennms.core.utils.useJMTA=false

org.opennms.core.utils.transport=smtp

org.opennms.core.utils.mailHost=smtp.gmail.com

org.opennms.core.utils.smtpport=587

org.opennms.core.utils.smtpssl.enable=false

org.opennms.core.utils.authenticate=true

org.opennms.core.utils.authenticateUser=tomailid@gmail.com

org.opennms.core.utils.authenticatePassword=password

org.opennms.core.utils.starttls.enable=true

org.opennms.core.utils.messageContentType=text/html

org.opennms.core.utils.charset=UTF-8

Edit notifd-configuration.xml to enable notification

status=”on”

Example:
notifd-configuration
status=“on”
pages-sent=”SELECT * FROM notifications”
next-notif-id=”SELECT nextval(‘notifynxtid’)”
next-group-id=”SELECT nextval(‘notifygrpid’)”

User mail configuration for notification:

As per your need you can configure the duty schedules.

Example:

Group configuration for notify:

As per your need you can configure the duty schedules.

Example:

When my node is down, i got a email notification. please see the below mail.

2Day i got a good information about GOOGLE 411. Its really a amazing product form Google.

Google’s new 411 service is free, fast and easy to use. Give it a try now and see how simple it is to find and connect with local businesses for free.

4 Easy steps tyo connect

1. Dial 1-800-GOOG-411 from any phone
2. State the location and business type
3. Connect to the business for free
4. Done!