lib/Tools/java

more robust classpath: skip empty entries;

#!/usr/bin/env bash
#
# Author: Makarius
#
# DESCRIPTION: invoke Java within the Isabelle environment

eval "declare -a JAVA_ARGS=($ISABELLE_JAVA_SYSTEM_OPTIONS)"

classpath "$ISABELLE_SETUP_CLASSPATH"; unset ISABELLE_SETUP_CLASSPATH
classpath "$CLASSPATH"; unset CLASSPATH

isabelle_java java "${JAVA_ARGS[@]}" \
  -classpath "$(platform_path "$ISABELLE_CLASSPATH")" "$@"