Web Services

The next generation of distributed computing has arrived. A Web service is a unit of managed code that can be remotely invoked using HTTP, that is, it can be activated using HTTP requests. Historically speaking, remote access to binary units required platform-specific and sometimes language-specific protocols. For example, DCOM clients access remote COM types using tightly coupled RPC calls. CORBA requires the use of tightly coupled protocol referred to as Internet Inter-ORB Protocol (IIOP), ...

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Web Services APIs for J2ME

Introduction The Web Services APIs (WSA) for Java 2 Platform, Micro Edition (J2ME), as defined by the Java Community Process Java Specification Request (JSR) 172 (see Resources), defines two independent optional packages for remote service invocation and XML parsing. These Java APIs are targeted at both the Connected Device Configuration (CDC) and the Connected Limited Device Configuration (CLDC 1.0 and CLDC 1.1)-based profiles. Because JSR 172 provides support for remote service invocation (se...
Published about 06-10-2009 | Rated 0

Use NetBeans IDE 6.7 to Combine JAR Files Into a Single JAR File

The Java Warehouse is the repository for Java and JavaFX applications submitted by developers for distribution through the Java Store to hundreds of millions of desktops worldwide. The Java Warehouse Developer Center Release Notes make clear that there is currently no way to upload applications composed of several Java Archive (JAR) files into the Java Warehouse. However, there is a workaround: Just concatenate each of the user and library classes into a single JAR file. This is very easy to do ...
Published about 01-09-2009 | Rated 0

Working with temporary files in JUnit 4.7

Another handy feature in JUnit 4.7 is the TemporaryFolder @Rule. Using this rule, JUnit will create a temporary folder before your test, and delete it afterwards, whether the test passes or fails. This comes in very handy for tests involving file manipulation of any sort. Of course you can write this code yourself (and most of us have!), but any infrastructure coding in tests is tiresome at best, and at worst will discourage developers (present company excluded, of course ;-)) from doing the ...
Published about 01-10-2009 | Rated 0

Java ordered collections: trees and skip lists

The Java collections framework includes classes you use to maintain collections of other objects. These collection classes implement interfaces that support different organizations of the objects they contain. For example, classes that implement the List interface keep objects in the order that they are added to the collection and can take a long time to search (proportionate to the number of objects in the collection). Classes that implement the Map interface keep objects in no particular order...
Published about 21-01-2009 | Rated +1