java - Read csv file to draw a pie chart in JfreeChart -


i'm trying read each csv file directory , calculations, using ratio each category draw pie chart using jfreechart. using piechartdemo1.java sample, should specify filereader , pass variables datasest? kept getting error message compiler. have demo coming in week, appreciated!

      defaultpiedataset dataset = new defaultpiedataset();       //filereader...       //int sum = counta + countb + countc;       //double ratioa = counta / double(sum) * 100.0;       //.....       dataset.setvalue("category a", new double(ratioa));       dataset.setvalue("category b", new double(ratiob));       dataset.setvalue("category c", new double(ratioc));       //....

the class csv can create categorydataset suitable use categorytopiedataset.


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