Group items tagged

Sample tutorial on how of Spring Dependency Injection and Inversion of Control using Constructor Injection and Setter Injection

Tutorial and Example on how to integrate Java, Spring, Hibernate and MySQL

In this article, we are going to look at how the Activiti BPM engine can be used together with Vaadin. We are going to do this in the form of a case study of a demo application that is available on GitHub. The code is licensed under Apache License 2.0 and can freely be used as a foundation for your own applications. Before continuing, you might want to check out this screencast of the demo application in action (HD quality is recommended):

"Units of Measurement API specifies one or more JavaTM packages for the programmatic handling of physical quantities and their expression as numbers of units."

Do you Want To know About method Overloading in Java? We provide you best notes on method overloading with great examples which can easily understandable for everyone.There are two ways to overload the method.

If a class have multiple methods by same name but different parameters, it is known as Method Overloading. If we have to perform only one operation, having same name of the methods increases the readability of the program.

The world of programming language is full of action with new languages being written, frameworks being created, some riding the ladder of popularity while others falling off the cliff. So as programmers it's important to keep one's eyes and ears open to the emerging trends so that one doesn't lose out on the potential opportunities.

Quick guide on what is Constructor overloading and how to implement constructor overloading in Java.

Good and quick tutorial on how to find memory usage in java with example. step by step guide to get free memory, max memory and total memory from JVM. memory usage is critical for performance point of view

"The Maven Archiver is mainly used by plugins to handle packaging. The version numbers referenced in the Since column on this page are the version of the Maven Archiver component - not for any specific plugin. To see which version of Maven Archiver a plugin uses, go to the site for that plugin. "

"Alloy is a UI metaframework that provides a consistent and simple API for building web applications across all three levels of the browser: structure, style and behavior. HTML HTML5 Reusable markup patterns Modular CSS CSS3 Built upon progressive enhancement Framework for layout, forms and state interaction JavaScript Built on top of YUI3 Small core file size (9kb) AutoComplete, Dialogs, Panels, Tabs, TreeView & more"

" Format String Syntax Every method which produces formatted output requires a format string and an argument list. The format string is a String which may contain fixed text and one or more embedded format specifiers."

"There are pros and cons for considering validation as business logic, and Spring offers a design for validation (and data binding) that does not exclude either one of them. Specifically validation should not be tied to the web tier, should be easy to localize and it should be possible to plug in any validator available. Considering the above, Spring has come up with a Validator interface that is both basic ands eminently usable in every layer of an application. Data binding is useful for allowing user input to be dynamically bound to the domain model of an application (or whatever objects you use to process user input). Spring provides the so-called DataBinder to do exactly that. The Validator and the DataBinder make up the validation package, which is primarily used in but not limited to the MVC framework. The BeanWrapper is a fundamental concept in the Spring Framework and is used in a lot of places. However, you probably will not have the need to use the BeanWrapper directly. Because this is reference documentation however, we felt that some explanation might be in order. We will explain the BeanWrapper in this chapter since, if you were going to use it at all, you would most likely do so when trying to bind data to objects. Spring's DataBinder and the lower-level BeanWrapper both use PropertyEditors to parse and format property values. The PropertyEditor concept is part of the JavaBeans specification, and is also explained in this chapter. Spring 3 introduces a "core.convert" package that provides a general type conversion facility, as well as a higher-level "format" package for formatting UI field values. These new packages may be used as simpler alternatives to PropertyEditors, and will also be discussed in this chapter."

"LMAX aims to be the fastest trading platform in the world. Clearly, in order to achieve this we needed to do something special to achieve very low-latency and high-throughput with our Java platform. Performance testing showed that using queues to pass data between stages of the system was introducing latency, so we focused on optimising this area. "

"JAnnocessor is a new open-source framework for powerful, flexible, yet easy processing of annotated Java code. Its main purpose is compile-time, annotation-driven source code generation in a declarative and customizable fashion. JAnnocessor is built on top of Java APT, encapsulating the Java source code model in a rich and convenient high-level domain model that serves as a good target for expressive matching and transformation. Finally, a template engine is used for customizable template-based source code generation. Having simplicity and productivity in mind, JAnnocessor has many useful features that make it enjoyable: smart imports organization, logging delegation, graphical UI for real-time debug, hot swap of processors and templates, as well as out-of-the-box common annotations, processors and templates."