pdfbox - PDPageContentStream drwastring method is not working -

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i trying create new pdf document using java program using pdfbox api,

exception in thread "main"

java.lang.noclassdeffounderror:org/apache/commons/logging/logfactory

every time facing same error. have added external jar file classpath, showing drawstring method of pdpagecontentstream object deprecated.

what problem this?


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