Re: Can I detect Java version before my java program starts?

You can try these two methods:

jdk14=/QIBM/ProdData/Java400/jdk14
jdk13=/QIBM/ProdData/Java400/jdk13
jdk12=/QIBM/ProdData/Java400/jdk12
if cd $jdk14
  then jv=4
elif cd $jdk13
  then jv=3
elif cd $jdk12
  then jv=2
else
  echo Connot find $jdk12 or $jdk13 or $jdk14!
fi
jdk=/QIBM/ProdData/Java400/jdk1$jv
echo Found JDK 1.$jv, use $jdk.
export -s JAVA_HOME=$jdk

I hope someone has better ways to do this.

Bruce

TitanRebel wrote:

I am starting a Java application on the iSeries. I don't really care which version of Java the iSeries is using as default (as long as it's above 1.3.1). The problem is that in the CL program that uses the JAVA command to start he application, I have to "hard code" the classpath to include a reference to the tools.jar file found in the JAVA_HOME directory. As you know this path changes based on the version of Java being used.

Is there a way that I can detect the version of java prior to program start and add the appropriate classpath entry then? Right now, a CL is starting the Java program "directly" with the JAVA command. This could be changed to use a QSHELL script, but I still don't know how I would do this in a shell script either.

Any help would be appreciated.

Thanks,

Ken