The Microsoft way

Bruce Eckel's Thinking in Java Contents | Prev | Next

At the time of this writing, Microsoft does not support JNI, but provides proprietary support to call non-Java code. This support is built into the compiler, the Microsoft JVM, and external tools. The features described in this section will work only if your program was compiled using the Microsoft Java compiler and run on the Microsoft Java Virtual Machine. If you plan to distribute your application on the Internet, or if your Intranet is built on different platforms, this can be a serious issue.

The Microsoft interface to Win32 code provides three ways to connect to Win32:

  1. J/Direct: A way to easily call Win32 DLL functions, with some limitations.
  2. Raw Native Interface (RNI) : You can call Win32 DLL functions, but you must then handle garbage collection.
  3. Java/COM integration : You can expose or call COM services directly from Java.
I’ll cover all three techniques in the following sections.

At the time of writing, these features were tested on the Microsoft SDK for Java 2.0 beta 2, which was downloaded (with a painful process they call “Active Setup”) from the Microsoft Web site. The Java SDK is a set of command-line tools, but the compilation engine can be easily plugged into the Developer Studio environment, allowing you to use Visual J++ 1.1 to compile Java 1.1 code.



Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Complex hybrid environments can make it difficult to track interdependencies, increasing the risk of disrupting critical business services. In this white paper by EMA, you'll learn how application discovery and dependency mapping can help you: Meet granular targets for availability, cost, and time-to-revenue for cloud services. Accelerate mean time to repair (MTTR) while communicating better with stakeholders. Manage even the most complex hybrid environments more efficiently and effectively Understand the …

  • More than ever, agile Software Life Cycle Development and DevOps drives critical top-line business impact for customers across a broad range of industries. Learn how XtremIO is fundamentally enabling the next generation of agile Software Development & DevOps to: Radically improve developer efficiency and overall product quality via an All-Flash Dev Ops platform Enable modern lightning fast dev methodologies with zero-cost application & datasets full copies. Allow Developers to have zero storage obstacles, …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date