Blog
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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…
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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…
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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…
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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…
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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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MongoDB java driver. The custom builder for update operations.
Java driver for MongoDB does not provide any utility classes that could help with building update queries. If you want to create a query to update or increment field values, you usually have to use BasicDBObjectBuilder. This…
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Lightweight fast persistent queue in Java using Berkley DB
Recently I had a task to develop the application which will have large work queue and which need to survive the restarts. The application need to be lightweight. After trying several different persistent engines for Java I”ve…
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Creating secure Grails application powered by MongoDB
There is some twist to use more specific data storage engines than RDBMS. The mongodb is a modern feature-rich non-RDBMS database. It can be used with grails quite well, though some special care should be taken. In…
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Fixing support of replica set by Grails mongo plugin
If you are going to use mongodb for production grails application you might stuck with the issue that replica set is really not supported by current version 1.0.0.M1 of mongodb plugin. It is quite surprising because mongo…
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How to intercept and log stdout and stderr messages with log4j
Log4j doesn’t allow to catch stdout and stderr messages out of the box. However, you can still intercept them with a custom output stream, which is especially useful when you have to log data that third-party libraries…
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Load balancing work between Java threads using ZeroMQ
If you ever wrote production multi-threaded server in Java you know how it is difficult to implement load balancing between worker threads. You need to fight many issues to have good load balancer: 1. You need to…
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