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# Java

J Automation objects JEXEServer and JDLLServer are available to Java programmers. A Java programmer can easily use the power of J in building applications and applets.

J Automation objects and the corresponding Java support are only available in the Windows 95 and NT versions of J.

J User Manual chapter OLE gives an overview of J Automation objects. The term Automation supersedes the term OLE.

Automation is a Microsoft technology and it is supported directly in the MS J++ Java Development system, the MS Java Virtual Machine (JVM) jview.exe, and in Internet Explorer.

There are two problems with this direct MS support of Automation. JVMs from other vendors (e.g., Sun's java.exe) and Netscape browsers can't run Java programs that use Automation objects. There are also serious limitations in mapping data between J and Java with the MS Automation support.

These problems were solved by building a Java class that wraps the J Automation objects in a way that is identically usable in all JVMs and browsers. This Java class is the jserver class and it is distributed with the J system.

The best way to learn how to use J in Java is to study the examples. Run them, build them in your Java development environment, and experiment. Stepping through with a debugger is a good way to study the examples.

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