Pranav: There are a number of ways to do this.... If the libraries are project specific you could create a new folder at the same level that src exists. In that folder you would add that particular jar or group of jars. Next: I. Right click the project in the Project Explorer.... Note you must expand the project tree before the correct menu options appear. II. From the list, locate the "Java Build Path" option. III. Tab Several times until you locate the "Library" tab. IV. Tab several more times until you locate the button to "Add External Jars". V. A "File Dialogue" will appear and its just a matter of selecting the files you need. VI. Select Add and you will next be placed back on the "Library" tab. VII. Select the "OK" button and that should be it. There is a command button for adding Libraries but I've never had to use this. I'm intentionally vague on the number of tabs and what not due to the different versions used. I'm using 3.3 because that's the version my agency has certified. Jim James M. Corbett Programmer / Analyst | Canada Revenue Agency | Agence du revenue du Canada 875 Heron Rd. Ottawa, On. K1A0L5 James.Corbett@xxxxxxxxxxxxx Telephone | Téléphone: (613) 941-1338 Facsimile | Télécopieur: (613) 941-2261 Government of Canada | Gouvernement du Canada E = MC² -----Original Message----- From: program-java-bounce@xxxxxxxxxxxxx [mailto:program-java-bounce@xxxxxxxxxxxxx] On Behalf Of Pranav Lal Sent: February 11, 2011 09:03 To: program-java@xxxxxxxxxxxxx Subject: [program-java] Re: ANT and eclipse Hi Jim, Thanks. I created a project and the ANT errors have gone. Now, eclipse cannot find the classes defined in the JfreeChart library. I have defined the libraries under the build paths under java in eclipse. I have just made them boot-on eclipse startup libraries. No joy even though the classfile has been generated. How do I tell eclipse where to find libraries or is this some kind of namespace issue? Pranav