When setting the environmental variable, which of these "cases" is the best way to
set the classpath? Is there a semi-colon after the word "export"?

CASE 1.
CLASSPATH=$CLASSPATH:$ORACLE_HOME/JRE:$ORACLE_HOME/JLIB;export CLASSPATH

CASE 2.
CLASSPATH=$CLASSPATH:$ORACLE_HOME/JRE:$ORACLE_HOME/JLIB export CLASSPATH