include path - Java, How to add library files in netbeans? -

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i new netbeans ide , java. have java project shows lot of compilation errors: 

can not import "org.apache.commons.logging.log"

can please me these errors, how add library files in netbeans ide?

quick solution in netbeans 6.8.

in projects window right-click on name of project lacks library -> properties -> project properties window opens. in categories tree select "libraries" node -> on right side of project properties window press button "add jar/folder" -> select jars need.

you can see short video how-to.


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