Jfreechart：如何制作一个在x轴上具有String且在y轴上具有Integers的直方图？

Question

I have a Hashmap

the values are just strings and the Integers a number that represents the amount of times the String appears in a text

I would like to use this hashmap in order to create a histogram or a graph in general that would have in the x axis, the Strings from the hashmap

and in the y axis the Integers associated with them

Is this possible? How would I approach this problem?

Most of the examples I've seen are just on ints and doubles

Thanks.

Answer 1

Hashmap<String, Integer> sounds like a job for CategoryDataset and a bar chart; the BarChartDemo1 source is included in the distribution.