Java library to create graphs

Question

What is best and easy to use library for Java graphs? I am working with Swing application and need to integrate a graph for that project

I'd recommend the relatively new library, XChart to anyone who is visiting this post closer to 2015 — Adam Hughes, Jan 12 '16 at 22:12

Prashant Bhate · Answer 1 · 2011-07-02T18:49:36.347

14

Options

If graphs you mean like clusters nodes and links visualization have a look at graphviz gallery
To generate charts see jfreechart demo Download jfreechart jfreechart-1.0.13
Use java advanced imaging - jai see histogram demo source

Steps to create a chart using jfreechart

Create Dataset and pass array of data

HistogramDataset dataset = new HistogramDataset();
dataset.addSeries("series label",arrayOfValues,noOfBins);

Create a chart object

JFreeChart chart = ChartFactory.
createHistogram( "plotTitle", "xaxis label", "yaxis label", 
                dataset, PlotOrientation.VERTICAL, false, false, false);

If swing application use ChartPanel to render chart

ChartPanel chartPanel = new ChartPanel(chart)
chartPanel.setPreferredSize(new java.awt.Dimension JavaDoc(500, 270));
chartPanel.setMouseZoomable(true, false);

If need to write chart to a file/stream use ChartUtilities.saveChartAsPNG(...)

ChartUtilities.saveChartAsPNG(new File("histogram.PNG"), chart, width, height);

edited Jul 02 '11 at 18:49

answered Jul 02 '11 at 14:45

Prashant Bhate

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No,, i just want to create a histogram for a given image. – Keshan De Silva Jul 02 '11 at 14:49
oh i see , I have updated the answer to reflect what you might need to use – Prashant Bhate Jul 02 '11 at 15:11
I will check that. thank you for your kindly response. – Keshan De Silva Jul 02 '11 at 15:25
How can i use that library to create a histogram (or bar char) – Keshan De Silva Jul 02 '11 at 15:31
the sample code that given is too hard to under stand. because i am new to Java. So can you please help me to create a chart. I have the data in 2D array and a JPanel to display chart. – Keshan De Silva Jul 02 '11 at 15:39
DefaultCategoryDataset dataset = new DefaultCategoryDataset(); is not working... ask for the class even i linked the JAR file and import the import org.jfree.data.category.DefaultCategoryDataset; – Keshan De Silva Jul 02 '11 at 16:04
how can i link the JAR file in to my net-beans project. I already add the JAR file in to the library. But when compiling it says that 'HistogramDataset' class can't find??? – Keshan De Silva Jul 02 '11 at 16:11
make sure that you have both jfreechart-1.0.13.jar and jcommons-1.0.13.jar on the build path – Prashant Bhate Jul 02 '11 at 16:19
addSeries(Comparable key, double[] values, int bins) what is the parameter for 'key' it is not accepting the String – Keshan De Silva Jul 02 '11 at 16:19

score 9 · Accepted Answer · answered Jul 02 '11 at 14:32

9

One commonly used charting API is JFreeChart.

answered Jul 02 '11 at 14:32

Andrew Thompson

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can you give me sample code for how to use that Library. i Try to find. But i fail. Only i get it the API. But i can't find any sample code. – Keshan De Silva Jul 02 '11 at 14:40
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See also the `JFreeChart` [tag](http://stackoverflow.com/tags/jfreechart/info). – trashgod Jul 02 '11 at 16:12
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Are there also a non sourceForge repository? (==no malware) – patrik Aug 10 '15 at 15:21

score 5 · Answer 3 · edited May 23 '17 at 11:54

5

I answered in this thread, could be helpful Java graph library for dynamic visualisation

edited May 23 '17 at 11:54

Community

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answered Jul 02 '11 at 14:23

evilone

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Java library to create graphs

3 Answers3

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Steps to create a chart using jfreechart