Package: librxtx-java Version: 2.2pre2+dfsg1-1 Severity: important Control: affects -1 arduino
Dear Maintainer, a NullPointerException is thrown with openjdk-9-jre and openjdk-10-jre, while openjdk-8-jre works. See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894770#35 for the initial report and the source of the test code below. Small testing code ("Test1.java"): import java.util.*; import gnu.io.*; public class Test1 { public Test1() { Enumeration ports = CommPortIdentifier.getPortIdentifiers(); } public static void main (String args[]) { Test1 myTest1 = new Test1(); } } Compile and run it: $ CLASSPATH=/usr/share/java/RXTXcomm.jar javac Test1.java $ CLASSPATH=/usr/share/java/RXTXcomm.jar:. java Test1 I switched between the different JRE versions via: $ update-alternatives --config java Selection Path Priority Status ------------------------------------------------------------ 0 /usr/lib/jvm/java-10-openjdk-i386/bin/java 1101 auto mode 1 /usr/lib/jvm/java-10-openjdk-i386/bin/java 1101 manual mode 2 /usr/lib/jvm/java-8-openjdk-i386/jre/bin/java 1069 manual mode 3 /usr/lib/jvm/java-9-openjdk-i386/bin/java 1091 manual mode In case of an error (with jre-9 and jre-10), the following expections are thrown: java.lang.NullPointerException thrown while loading gnu.io.RXTXCommDriver java.lang.NullPointerException thrown while loading gnu.io.RXTXCommDriver No exception occours when using jre-8. The user is part of the "dialout" group (i.e. there is no permission cheers). Thank you for your time! Cheers, Lars
