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No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Fujitsu Limited. © 1996-2005 Fujitsu Limited. All Rights Reserved. Preface The "NetCOBOL J Adapter Class Generator" is a tool that generates a COBOL class (adapter class) used to call a Java class. Using the adapter class thus generated makes the Java class library available from COBOL. A Java runtime environment must be installed to execute the generator or the adapter class generated. See "Preparations" for required products. Purpose of This Manual This manual provides information on how to enable COBOL programs to use Java classes. The information includes the ways of creating adapter classes, writing programs, and running the programs. Refer to the Fujitsu NetCOBOL Language Reference for the COBOL syntax. For information on how to develop programs using Fujitsu NetCOBOL, refer to the Fujitsu NetCOBOL User's Guide. Intended Readers This manual is intended for persons who develop COBOL programs using Java classes. Prerequisites Readers are required to have the following knowledge to read this manual: Basic knowledge of COBOL syntax Basic knowledge of COBOL object-oriented programming Basic knowledge of Java Organization of This Manual This manual consists of the following chapters: Chapter 1. Outline of J Adapter Class Generator Chapter 1 explains the function and operating environment of the J adapter class generator. Chapter 2. J Adapter Class Generator Framework Chapter 2 explains the framework of the J adapter class generator. Chapter 3. Developing Programs Chapter 3 explains how to develop programs that uses Java classes. Chapter 4. Using the Generator Command Chapter 4 explains how to use the generator command (java2cob). Chapter 5. Adapter Class Reference Chapter 5 provides detailed information on the FJ-JAVA-BASE, FJ-JAVA-CONTROL and FJ-JAVA-ERROR classes provided by the J adapter class generator, and adapter classes generated by the J adapter class generator. Appendix A. Message List Appendix A explains the messages output by the J adapter class generator, including the operator responses to the messages. Appendix B. Exception Type List The Appendix B describes the types of exception generated by the J adapter class generator and their remedial measures. How to Use This Manual When using the J adapter class generator for the first time, begin to read from Chapter 1. Chapter 1 provides an outline of the J adapter class generator, Chapter 2 explains the framework, and Chapter 3 explains the procedures from development to execution. Chapters 4 and 5 provide detailed information on how to use commands and classes. Read these chapters for program development. The Appendix A describes the messages that are output form the J adapter class generator and the Appendix B describes the exception types that the J adapter class generator sets. Read them as necessity requires. Product Names Product Name Abbreviation Microsoft® Windows® 98 Operating System Windows® 98 Microsoft® Windows® Me Operating System Windows® Me Microsoft® Windows NT® Workstation Operating System Version 4.0 Windows NT® or Windows NT® 4.0 Microsoft® Windows NT® Server Network Operating System, Version 4.0 Windows NT® or Windows NT® 4.0 Microsoft® Windows NT® Server Network Operating System, Enterprise Edition Version 4.0 Windows NT® or Windows NT® 4.0 Microsoft® Windows® 2000 Professional Operating System Windows® 2000 or Windows® 2000 Professional Microsoft® Windows® 2000 Server Operating System Windows® 2000 or Windows® 2000 Server Microsoft® Windows® 2000 Advanced Server Operating System Windows® 2000 or Windows® 2000 Server Microsoft® Windows® 2003 Server Operating System Windows® 2003 or Windows® 2000 Server Windows® 98, Windows® Me, Windows NT®, and Windows® 2000 Windows® Registered Trademarks The registered trademarks appearing in this manual are as follows: Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation in the U.S. and other countries. Java and other trademarks including Java are trademarks of Sun Microsystems, Inc. in the U.S. and other countries. Chapter 1. Outline of J Adapter Class Generator This chapter explains the function and operating environment of the J adapter class generator. What is the J Adapter Class Generator? Taking advantage of the object-oriented function, Fujitsu NetCOBOL enables programming using class libraries . The Fujitsu NetCOBOL also provides many useful foundation classes. Meantime, as Java becomes popular, many Java class libraries are also provided. However, the class structure varies from language to language and therefore Java class libraries cannot normally be used from COBOL. The J adapter class generator provides a framework that enables COBOL to use Java classes. The J adapter class generator enables a COBOL program to: Use a Java class library. Call a Java application. Use an applicatio...