Software metrics is broad terms for all those actions which entails some degree of software measurement and are anticipated to measure the software quality as well as performance characteristics quantitatively. These can serve as measures of software products for the purpose of comparison, fault prediction, cost estimation and forecasting. This study is based on the data from a large open source project The JFreeChart available at one of the largest storehouses of open source projects www.sourceforge.net. In this paper we study over 57 versions of this project released in the time period from 2000 to 2016.