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'Creating SOAP client from wsdl file' post illustration
Creating SOAP client from wsdl file

Today we’ll talk about writing java client for exchanging data with web service using SOAP protocol specification. Many of the web services that supports SOAP have java libraries that can make this task pretty simple to implement.
But if there is no such feature, then it becomes a little tricky, but in this article I will show you that it's not so hard as it seems.

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'Immutable Collections in Java' post illustration
Immutable Collections in Java

Occasionally, while programming, one may want to create constant sets and store them in final variables for public use. Such a desire can lead to all sorts of problems.

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'Get process list in Unix based systems in Java.' post illustration
Get process list in Unix based systems in Java.

In this article we’ll talk about how to get process list in Java by running standard Unix commands.

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'API Enhancements in Java SE 7' post illustration
API Enhancements in Java SE 7

Recently released Java 7 has a lot of useful API enhancements such as the automatic resource management, multi-catch statements, switch statement with strings, binary literals and improved numeric literals. This post is a quick roundup of the new features, which should help you to get a full picture of Java 7 syntax in a short time.

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'Authorize.Net CIM With Java SDK: How To Bill Your Customers' post illustration
Authorize.Net CIM With Java SDK: How To Bill Your Customers

Authorize.Net is a popular payment gateway service provider allowing merchants to accept credit card and electronic check payments.
Using such a gateway to issue a one-time transactions doesn't raise any great troubles, but serving returning customers or managing complex subscriptions requires you either to be compliant with the Payment Card Industry Data Security Standard (PCI DSS) or to ask your customer to re-enter his or her billing info every time. Neither is always what you want. Well, among other Authorize's features there is a Customer Information Manager (CIM), which targets that particular problem.

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'Drawing charts in Grails.' post illustration
Drawing charts in Grails.

Recently, I faced the problem of using charts in Grails web-application. At first, I was thinking about using well-known java libraries, such as JFreeChart . JFreeChart has a nice look, nice written documentation, and pretty simple to use.

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'Designing a log of database queries for MongoDB' post illustration
Designing a log of database queries for MongoDB

The database query log could be a crucial part of a database restoring process required after data corruption caused by either an illegal update operation or a damage of database files. The main task here is to find the right format for storing the queries.

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'Simply about Spring' post illustration
Simply about Spring

This article is devoted to very popular framework Spring. It’s very necessary theme for beginners in Java, because Spring is widespread technology.
First of all let's consider wiring - dynamical assembling of separated beans, most important part of Spring framework technology. It's important to keep in mind, that a good understanding of fundamental things is a irreplaceable skill for really cool programmer.

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'Speedup of JSON parsing in Grails' post illustration
Speedup of JSON parsing in Grails

Optimizing Web application request processing time is an important stage of quality product development. While doing this part of the work on one of our products we noticed that the huge bottleneck was buried inside built-in JSON support in Grails. The problem was that built-in JSON parser that comes with Grails is surprisingly slow. Thats why we considered switching to using Java-based JSON parser instead.