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This edition of the README applies to the Java Communications API for Linux and to all subsequent releases and modifications until otherwise indicated in new editions.
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Java(TM) Communications application programming interface (API) gives Java applications a platform-independent way of performing serial and parallel port communications for technologies such as voice mail, fax, and smartcards. After writing serial or parallel port communications for your application, you can then include those files with your application. Use Java Communications API if you want to write Java programs that access serial or parallel ports.
Java Communications API 2.01 supports Electronic Industries Association (EIA)-232 (RS232) serial ports and Institute of Electrical and Electronics Engineers (IEEE) 1284 parallel ports and is supported on systems with the IBM(R) Developer Kit for Linux, Java 2 Technology Edition, V1.3.1, 32-bit version, Runtime Environment.
For the list of distributions against which the Developer Kit for Linux has been tested, see:
http://www-106.ibm.com/developerworks/java/jdk/linux/tested.html
Using Java Communications API, you can:
The Java Communications API files are installed as shown:
For example, if you accepted the default directory
when you installed the installable RPM package, the
comm.jar file is in the
If you installed the package in another directory, the
files are in the same directory structure,
but
After you install Java Communications API, you must:
After you install Java Communications API, you must change the access mode of serial and parallel ports so that users can access these devices. Logged on as an administrator, use the following commands, as applicable:
chmod 777 /dev/ttyS0 (COM1) chmod 777 /dev/lp0 (parallel port) chmod 777 /dev/ttyS1 (COM2) chmod 777 /dev/ttyS2 (COM3) chmod 777 /dev/ttyS3 (COM4)Change the access mode of other ports as needed.
After you install Java Communications API, you must set the PATH.
export PATH=/opt/IBMJava2-131/jre/bin:$PATH
If you plan to redistribute Java Communications API with the IBM Developer Kit for Linux, Java 2 Technology Edition, V1.3.1 Runtime Environment and your product, you must package the files listed in Location of Java Communications API files. The files must be included as part of your product installation and placed in the appropriate subdirectories on the user's system.
The process you use to remove Java Communications API depends on whether you
installed the installable RPM package or the compressed TAR package. See
Uninstalling the installable RPM package or
Uninstalling the compressed TAR package for instructions.
Uninstalling the installable RPM package
To uninstall Java Communications API if you installed the installable RPM package, use the rpm command, as follows:
rpm -qa | grep IBMThe names of the installed packages are displayed.
rpm -e pkgnamewhere
pkgname
is the name of the Java Communications API package
that was displayed.To uninstall Java Communications API, delete the following files from the directory where you installed them:
API documentation and samples for Java Communications API can be found at the Sun Web site:
Select Products & APIs and look under Optional Packages.
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