Subject:
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java.lang.NoClassDefFoundError: josx/rcxcomm/RCXPort
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Newsgroups:
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lugnet.robotics.rcx.java
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Date:
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Fri, 12 Nov 2004 11:31:40 GMT
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Viewed:
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7493 times
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Hello,
I am new to Lejos and have been trying PC <-> RCX communications.
Unfortunately the books I am using are out of date, I see now that RCXComm is
being used to Comms. I followed the Tutorial on the Lejos site, the code
compiles fine, but am recieving the Run time error below:
java.lang.NoClassDefFoundError: josx/rcxcomm/RCXPort
at RotationNavigation.DisplayMapData.main(DisplayMapData.java:14)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.openide.execution.ThreadExecutor.executeClass(ThreadExecutor.java:132)
at
org.openide.execution.ThreadExecutor$TERunnable.run(ThreadExecutor.java:209)
at
org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:119)
My classpath looks like:
.;D:\Lejos work;C:\Program Files\s1studio_jdk\j2sdk1.4.1;C:\Program
Files\s1studio_jdk\j2sdk1.4.1\lib\comm.jar;c:\lejos\lib\pcrcxcomm.jar;c:\lejos\lib;C:\lejos\lib\classes.jar
My path looks like:
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program
Files\s1studio_jdk\j2sdk1.4.1\bin;C:\lejos\bin;C:\lejos\bin\irtower.dll
I am running the code on the PC so I am compiling and executing with the
standard Java 1.4, I take it this is correct.
The code is :
import josx.rcxcomm.*;
import java.io.*;
public class DisplayMapData
{
public static void main(String [] args)
{
try
{
RCXPort port = new RCXPort();
InputStream is = port.getInputStream();
System.out.print(is.read());
}
catch (IOException ioe)
{
}
}
}
Any suggestions would be much appreciated.
Many thanks
Laurence Rochfort
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