RTJ java sc12

Hello!

I use the example programm
C:\vm\simplertj-1.4.2-ippchip\projects-sc12\Pio
I modify the make.bat
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@echo off
set JDK_HOME=C:\jdk1.3.1_01
set JVM_HOME=C:\vm\simplertj-1.4.2-ippchip
if %JDK_HOME%.==. goto SETHOME

echo Compiling...
%JDK_HOME%\bin\javac -target 1.3 -classpath
.;%JVM_HOME%\lib\javax.jar;%JVM_HOME%\lib\sc12.jar -bootclasspath
%JVM_HOME%\lib\java.jar *.java
if errorlevel==1 goto ERROR

echo Linking...
set CLASSPATH=%JVM_HOME%\lib\ClassLinker.jar
%JDK_HOME%\bin\java ClassLinker -f PIO
if errorlevel==1 goto ERROR
goto EXIT

:ERROR
echo Build failed
goto EXIT

:SETHOME
echo Missing JDK_HOME environment variable. For example: SET
JDK_HOME=C:\JDK1.3

:EXIT
pause
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Subsequently i modify the PIO.java to a empty file which only contains


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mport javax.events.*;
import java.util.*;
import sc12.hw.*;
import sc12.comm.*;

class PIO
{


    static void main(String[] Args)
    {

    }
}
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Now I want to use a fuction of sc12.comm in my PIO.java programm for
example
for rthe RS232

C:\vm\simplertj-1.4.2-ippchip\lib-source\sc12\comm inculdes the
files
make.bat
Parallel.java
Serial.java
TimeoutExeeption.java

Do i have to transform the Serial.java into a Serial.class?
Do i have to copy the Serial.class or Serial.java into the
C:\vm\simplertj-1.4.2-ippchip\lib folder?
Or what shell I to to make using sc12.comm fuctions posibble?

Please could you help me, thanks in Advance

Best greetings