Matthew,
Yes. FIrst let me explain why. IMPORT and EXPORT are NOT SQL. They are DB2 commands. That is why they cannot be executed with the JDBC standard. There is a way to perform any DB2 command through Java though.
Take a look at the sample code provided by IBM:
http://www.developer.ibm.com/tech/sampdb2.html
especially the runstats.zip one.
This is what you are basically doing.
1) open a DB2 command window
2) execute the java app in this window
3) the Java app spawns child processes that do the Db2 commands
HTH
Andy