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Frequently asked Questions - Java Enum - Java tutorial
Though Java Enum was introduced in Java 5, many programmer are still unaware of it's usefulness. This article, explains different concepts of Enum in form of question answers.
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Working with preferences: the Preferences API Specification
The addition of the java.util.prefs package to Java 1.4 (through JSR 10) lets you manipulate user preference data and configuration data by providing you with access to an implementation-specific registry (for example, the Windows Registry on Windows platforms). This article introduces you to the Preferences class and walks you through its use. It puts it all together with a sample program.
Secure communication between peers: SSL through JSSE
A core requirement of any non-trivial P2P application is secure communication between peers. While the details of the security depend on how the application will be used and on what it will protect, it's often possible to implement strong, general-purpose security using off-the-shelf technology such as SSL. This article demonstrates how to use SSL (via JSSE) in P2P security.
Working With Images In Android
Learn to display and manipulate images in Android. Explore using ImageViews to display images. Use bitmaps to load and manipulate images in Android applications. Also see how to rotate and scale images.
Java 2 Micro Edition (J2ME) Application Development : MIDP Programming.
Sample chapter from "Java 2 Micro Edition (J2ME) Application Development" on Mobile Information Device Profile programming.
Console applications with Java 6
In Java 6 a better way of interacting with the command prompt was introduced, the java.io.Console class. Together with the utility class java.util.Scanner introduced in Java 5 this new API can be used to develop more advanced Java console applications.