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Abstraction in Java – The ULTIMATE Tutorial (PDF Download)

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                      Table Of Contents 1. Introduction 2. Interfaces 2.1. Defining Interfaces 2.2. Implementing Interfaces 2.3. Using Interfaces 3. Abstract Classes 3.1. Defining Abstract Classes 3.2. Extending Abstract Classes 3.3. Using Abstract Classes 4. A Worked Example – Payments System 4.1. The Payee Interface 4.2. The Payment System 4.3. The Employee ...

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Jersey SSE capability in Glass Fish 4.0.1

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Glass Fish bundles different Reference Implementations for various Java EE specifications e.g. Weld for CDI, Mojarra for JSF, Tyrus for WebSocket, Jersey for JAX-RS. Glass Fish 4.0.1 is in the pipeline and slated to cover updates for many of the components/modules which both include new features and bug fixes of course. Server Sent Events feature in Jersey will be supported with Glass ...

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Develop, test and deploy standalone apps on CloudBees

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CloudBees is a cloud platform providing repository, CI service (Jenkins) and server for your apps. So everything you need to develop, test and deploy. There are many options, e.g. repository can be Git or SVN, for server you can choose Jetty, Tomcat, Glassfish, JBoss, Wildfly etc. It is also possible to run standalone applications, which are provided with port number, ...

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JavaFX Tip 7: Use CSS Color Constants / Derive Colors

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When working on FlexCalendarFX I got to the point where I had to define a set of colors to visualize the controls for different calendars in different colors. And not just one color per calendar but several: a background and a text color for deselected / selected / hover states. The  colors were used in several places but for the sake of ...

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JavaFX Tip 6: Use Transparent Colors

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Picking the right colors for your user interface elements is always a great challenge, but it is even more challenging when you develop reusable framework controls where you as a developer have no control over the look and feel of the application using them. While you might always add elements on top of the default gray background the developers embedding your controls  might have more ...

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Improve your Feedbackloop with Continuous Testing

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Have you ever though about what the most valueable thing in software development was for you? And im not talking about things that value for you personally, but for the success of the development itself. Well i have thought about it, and for me it was Feedback – in any form. It is so important, because it enables steering. Development ...

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Java 8 Friday: More Functional Relational Transformation

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In the past, we’ve been providing you with a new article every Friday about what’s new in Java 8. It has been a very exciting blog series, but we would like to focus again more on our core content, which is Java and SQL. We will still be occasionally blogging about Java 8, but no longer every Friday (as some ...

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