assume your java source file in here:
e:\j2sdk1.4.1_03\com\oraliy\src\com\prefect\ecommerce
assume your java class file in here :
e:\j2sdk1.4.1_03\com\oraliy\classes
then you can run javac like this:
first cd e:\j2sdk1.4.1_03\com\oraliy\classes
second javac -d . ../src/com/prefect/ecommerce/*.java
javac com\prefect\ecommerce\giftshop.javaOK!