Oh, a lot of questions :-) If you have enough serial ports you can connect them via a crossover cable.
BTW: There is a driver for windows to emulate 2 com interfaces connected ba a crossover cable: http://sourceforge.net/projects/com0com/ SourceForge.net: Null-modem emulator (I never tried it) Why are you interested in VerifyError? The java verifyer checks all classes while they are loaded (checksum and more). Only system classes are noch checked. System classes ar classes from some special directories under the java installation directory. I don't know the option -noverify but it sounds like this. Here are my notes when I installed rxtx on a linux machine about one year ago: # /usr/local/java/bin/jar -xvf rxtx-2.1-7-bins-r2.zip # cp rxtx-2.1-7-bins-r2/RXTXcomm.jar /usr/local/java/jre/lib/ext/ # cp rxtx-2.1-7-bins-r2/Linux/i686-unknown-linux-gnu/* /usr/local/java/jre/lib/i386 If you have different java versions installed be sure to use the correct version! I am using netbeans 6 (daily build) from http://www.netbeans.info/downloads/dev.php Development Downloads You should add the directory "Src" to your source path if the layout is Src/directorys/for/each/part/of/the/package/SomeClass.java This should work without problems. My layout of java-versions on the linux machine is (as there are installed some 10 versions): /usr/local/java_sw/sun/<unpacked jdk> ibm/... blackdown/... And one link /usr/local/java -> /usr/local/java_sw/sun/jdk1.6.0 With /usr/local/java/bin in $PATH But $JAVA_HOME should point directly to the preferred version. Good Luck and greetings from Austria Peter -----Original Message----- From: Robert Meier [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 21, 2007 6:06 AM To: [EMAIL PROTECTED] Subject: Re: [QUESTION] Howto access parallel port Peter, Thank you for the pointer to RXTX. I have made progress but am still a newbie. I have successfully built and run nulltest.java, which sends a string to /dev/ttyS0 and simutaneously reads from /dev/ttyS0. With a short from TX to RX, it reads the same string written, "Hello, world". My success is limited by the fact that I don't understand much of the configuration. When I googled for java.lang.VerifyError encountered, I found a cookbook fix suggesting the use of -noverify. -noverify appears to be undocumented by java -h, or man page. What does 'java -noverify' mean? I am using netbeans-4.1 but have been unable to view the RXTX source. I have tried using [Tools/Library Manager] I was able to add RXTX as a library and add its jar file under [Classes]. Though I have added under {Source] its jar, source zip, expanded src directory, and parent of the expanded src directory, it fails to find the source. How is source linked into netbeans? What is the expected layout of the jar/folders added via library manager? *.java at top level? src/*.java? gnu/io/*.java? src/gnu/io/*.java? ??? netbeans reports no errors, but finds no source. I currently have the .jar and .java files of the jre under /opt/jdk/jdk-1.5.2/ at varying depths as installed by default, and have placed /opt/java/RXTXcomm.jar . What is the conventional (and presumably manageable) layout of java source, libraries, and javadoc. /opt/java/*.jar? /opt/lib/lib*.so? /opt/share/java/*.zip? ??? TIA, -- Dr. Robert J. Meier ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
smime.p7s
Description: S/MIME cryptographic signature
