There are so many ways to format data in a text file, so I've generally not tried to write lots of code to read data from files / databases. Instead, this is left to you - just create a new DefaultCategoryDataset, then from your own code that scans the file call the addValue() method to add each data item that you ...
Just loop over each column of the array and write each value to a file followed by a comma. Once you are done the row, write a newline to the file. Repeat for each row. Don't worry if your lines (rows) end in an extra comma since these just mean you have a blank cell at the end of the row.[/code] ...