how to process bash params

gistfile1.txt

#!/bin/bash
if [ "$#" -lt 3 ]; then
   echo "Usage:   ./run_oncloud.sh project-name bucket-name classname [options] "
   echo "Example: ./run_oncloud.sh cloud-training-demos cloud-training-demos CurrentConditions --bigtable"
   exit
fi
PROJECT=$1
shift
BUCKET=$1
shift
MAIN=com.google.cloud.training.dataanalyst.sandiego.$1
shift
echo "Launching $MAIN project=$PROJECT bucket=$BUCKET $*"
export PATH=/usr/lib/jvm/java-8-openjdk-amd64/bin/:$PATH
mvn compile -e exec:java \
 -Dexec.mainClass=$MAIN \
      -Dexec.args="--project=$PROJECT \
      --stagingLocation=gs://$BUCKET/staging/ $* \
      --tempLocation=gs://$BUCKET/staging/ \
      --runner=DataflowRunner"
# If you run into quota problems, add this option the command line above
#     --maxNumWorkers=2 
# In this case, you will not be able to view autoscaling, however.