itextpdf test for sample-invoice.pdf

Input: sample-invoice.pdf

java -cp "bin/classes:bin/itextpdf-5.5.13.4.jar:bin/bcprov-jdk18on-1.79.jar:bin/bcpkix-jdk18on-1.79.jar" \
ItextExtract "sample-invoice.pdf" "sample-invoice--itextpdf-java.txt"