Historically, the development of Ajax web applications has been a complex process. This is due mainly to the requirement to learn and use a variety of technologies, such as HTML, JavaScript, XML, ASP.NET, Java servlets, various scripting languages, etc. Recently several products have emerged that make it possible to develop Ajax web applications using the Java development environment. Some use exclusively Java, while others use mainly Java. One development environment that allows you to use mainly Java for the development of web applications is the Google Web Toolkit (GWT), which is the primary topic of this tutorial lesson.
Focus Events, Click Events, and Drag-and Drop in AJAX Using the GWT and Java
