rcanblog » java

Java store from Java: an online repository of Java based applications

coeditor — Wed, 11 Nov 2009 08:07:58 +0000

Java store program from Java is online huge repository of all kind of Java based applications, which include games, business applications, social networking applications and many other.

The storefront is easy to use as you just need to drag and drop an application from sore to your desktop. It is safe and easy. Also it provides preview facility to have a test run applications before purchasing them. It also incorporates easy interface feature to update or uninstall an application. However it is currently under Beta stage and available to US residents only. If you are a developer you can also contribute to the store.

You would like to also read

The best free IDE’s you can use

editor — Thu, 03 Sep 2009 08:49:13 +0000

IDE, An integrated development environment or integrated design environment or integrated debugging environment is a software application mainly designed for programmer’s convenience to increase the productivity.

A good IDE should have following things

A source code editor
Compiler or interpreter as per the language
Intelligence system
Build automation tools and a debugger

There lots of paid and free IDE’s are available according to needs, but if you don’t want to spent a penny then you can go for free and opensource one’s

The most popular and powerful free IDE’s are

Microsoft Visual Studio Expres Edition , NetBeans , Eclipse , Komodo Edit, Bluefish, , Geany, Quanta Plus , Code:: Blocks, Wikipedia has a very good comparison table for these IDE’s and you can also take a reference from Individual IDE pages from wikipedia.

If you are looking for a PHP IDE then I would personally suggest NetBeans from Sun Micro System and Komodo Edit from ActiveState.

References:

[1] Comparison of Proprietary and Free/OpenSource IDE (Integrated Development Environment )
[2] PHP IDE

You would like to also read

How to create JAR file in Windows

coeditor — Thu, 20 Aug 2009 15:41:33 +0000

JAR (Java Archive format) is file format to compress files or bundle multiple files into one archive file. Zip is simple archiving and compressing tool but JAR includes a special file called Manifest which adds versatility to JAR file, and hence provides enhanced functions like versioning, packaging and digital signature. The following explains a simple procedure to create a JAR file in Mirosoft Windows.

JAR file are created using Java Archive tool which is part of Java SDK. Hence to create a JAR file, SDK needs to be installed on the system. We will see jar.exe and other binary file in bin folder in Java SDK, as shown below.
(We can see Jarsigner.exe is also part of the Java SDK. It help us create the digitally signed files. )

To create the JAR file in Microsoft Windows we will need to go to the command prompt.

Put all the files that are to be archived in some directory , say c:\test ( say files are b.txt and a)

Go to start menu and select run program. Go to the path where the files are there, here to c:\test

Check where SDK is located in machine. Check for the jar.exe in bin folder into SDK folder package name. It can be like C:\j2sdk1.4.1_05\bin. Type the path of jar as shown below. Then type the jar command as

jar options xxx.jar file_names

Here, options here shown are
c -> to create an new archive
v -> It gives the verbose output on standard output. It will give whole details of all the file being added and how much they are deflated.
f -> it specifies the file name of the created JAR

xxx.jar means the name of jar file you want to give for e.g. test.jar

file_names are the input files that are to be archived. Since we want all the files to be archived we have given below the parameter as asterisk (*).

When you run the command you see the following output ( because of –v option)

The jar file test.jar in created in test directory itself.

To unjar the jar file back to original files you just need to give the following command in the jar file directory, in this example c:\test

C:\java\j2re1.4.1_02\bin\jar -xvf test.jar

Where x is the option to extract files from archive and C:\java\j2re1.4.1_02\bin\ is the JDK installation path.