java - how to use Arraylist (for-loop) in Jfreechart piechart? -

i started on collecting data in database, wrote code retrieves information, name(language) , amount of times language has been counted, arraylist. data wanted make piechart.

i have tried jfreechart

does know how use data in arraylist piechart createdataset code jfreechart , since attempts resulted in failure(empty piechart) while using loop in the method ,createdataset, since data in arraylist changes , therefore dont want hardcode values , names.

for loop attempt(everything else left default):

public piedataset createdataset() {     defaultpiedataset result = new defaultpiedataset();     for(language l: languagelist){     result.setvalue( l.getname(), l.getcount());     }     return result; } 

if loop possible doing wrong or has change tom make work, if i'm off want know.

--edit--

public piedataset createdataset() {     defaultpiedataset result = new defaultpiedataset();     int count = 0;     for(language l: languagelist){         result.insertvalue(count++, l.getname(), l.getcount());      }     return result; } 

try using insertvalue api like:

int count = 0; for(language l: languagelist){     result.insertvalue(count++, l.getname(), l.getcount()); }