graphs in java

Hi,
We are developing a project in which we need to create a graph. We are visualising the tweets in twitter for that we need to list all the topics in the twitter using a graph where the max points and min points of a graph depend on the popularity of the topic i.e no. of tweets and we also select topics of a particular day or month or year only.The graph should also change dynamically based on the tweets arriving. Please suggest how to do that as soon as possible.We are really struck there.

Thank you.

Have you heard of JFreeChart?

db

Hi,
No. Is it one the classes in swing package?

JFreeChart.

You could have googled you know.