please help me,
I have installed java in /opt/tinyOS-1.x/ but when I run the command ' java 
net.tinyos.tools.Listen ' it throws following error

javax.comm:  Error loading javax.comm.properties!
null

java.io.IOException: javax.comm: platform driver class name = null
                     (Check 'driver' property in javax.comm.properties)

    at javax.comm.CommPortIdentifier.loadDriver(CommPortIdentifier.java:244)
    at javax.comm.CommPortIdentifier.<clinit>(CommPortIdentifier.java:109)
    at net.tinyos.packet.SerialByteSource.openStreams(SerialByteSource.java:59)
    at net.tinyos.packet.StreamByteSource.open(StreamByteSource.java:51)
    at net.tinyos.packet.Packetizer.openSource(Packetizer.java:119)
    at net.tinyos.packet.AbstractSource.open(AbstractSource.java:77)
    at net.tinyos.packet.Packetizer.open(Packetizer.java:114)
    at net.tinyos.tools.Listen.main(Listen.java:54)
Exception in thread "main" java.lang.UnsatisfiedLinkError: 
com.sun.comm.SunrayInfo.isSessionActive()Z
    at com.sun.comm.SunrayInfo.isSessionActive(Native Method)
    at com.sun.comm.Portmapping.registerCommPorts(Portmapping.java:155)
    at com.sun.comm.Portmapping.refreshPortDatabase(Portmapping.java:100)
    at javax.comm.CommPortIdentifier.<clinit>(CommPortIdentifier.java:138)
    at net.tinyos.packet.SerialByteSource.openStreams(SerialByteSource.java:59)
    at net.tinyos.packet.StreamByteSource.open(StreamByteSource.java:51)
    at net.tinyos.packet.Packetizer.openSource(Packetizer.java:119)
    at net.tinyos.packet.AbstractSource.open(AbstractSource.java:77)
    at net.tinyos.packet.Packetizer.open(Packetizer.java:114)
    at net.tinyos.tools.Listen.main(Listen.java:54)

   Thanks.

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