Writes a scaled version of a chart to an output stream in PNG format. public static void writeChartAsPNG(OutputStream out, JFreeChart chart, int width. A quick how to use JFreeChart quide can be found at- https://robbamforth. addSeries(series); (); } final JFreeChart chart =ChartFactory. . Opens a file chooser and gives the user an opportunity to save the chart in PNG format.

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This class provides JFreeChart method to create bar charts, line charts, pie charts, and xy plots including time series data. Sign up using Facebook.

Let us keep the above Java code in BarChart3D. The frame listens for window closing events, and responds by shutting down the JVM.

A line chart or line graph displays information as a series of data points markers connected savve straight line segments. Hence, this class has the same features as PiePlot class, except it is used to create 3D plots. User savs is needed while installing JFreeChart. The wok capacity can be treated as number of hours that is plotted as bubbles in the chart. A chart is a graphical representation of information.

JAVA – JFreeChart – How To Save a JFreeChart to JPEG File – Rob Bamforth’s Blog

This method adds or updates a value in chzrt table and sends a DatasetChangeEvent to all registered listeners. This renderer class is designed for use with the XYPlot class.

This interface extends KeyedValues and DataSet interfaces. The code example uses a bar chart to show the number of Olympic gold medals per country in London A 3D effect can be achieved by adding a little extra code, which will take care of creating 3D effect in a pie chart. A 3D Pie chart is same as the pie chart additionally with a chagt 3D effect.

In such case, displaying the data in the form of charts using JFreeChart programming is very simple.


An area chart displays graphically quantitative data that change over time. With the getOutputStream method we get an output stream. This is the class, available under org. A 3D effect can achieved by adding a little extra code, which will take care of creating 3D effect in a bar chart. Some of the methods in this interface are taken from SeriesDateset interface. Font titleFont, Plot plot, boolean createLegend This constructor creates a new chart with the given title and plot.

This method is taken from AbstratRenderer abstract class, which is super class of this package. It provides a collection of utility methods for generating standard charts. This method creates a bar chart. You can use these charts to provide better display and clear information.


By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Number value It sets the data value for a key and sends a DatasetChangeEvent to all registered listeners.

It sets the upper margin for the axis as a percentage of the axis range and sends an AxisChangeEvent to all registered listeners. The existing charts can be easily updated through the listeners that the library has on its data collections. If you do not need to embed your chart in any application, then you can create chart images at command prompt.

JFreeChart tutorial – learn how to create charts in Java

This class is immutable, which is a requirement for all RegularTimePeriod subclass. This method is used to set the frame size using java. Today, JFreeChart is the most widely used charting library among Java developers. JfreeChart is an open source library developed in Java. The orientation can either be vertical or horizontal.

It sets the alpha-transparency for the plot and sends jfreecgart PlotChangeEvent to all registered listeners.


Sign up or log in Sign up using Google. A chart is a drawing that shows information in a simple way, often using lines and curves to show amounts. ChartPanel JFreeChart chart, boolean properties, boolean save, boolean print, boolean zoom, boolean tooltips.

JFreeChart class is the core class under the org. This method Sets the stroke used for a series and sends a RendererChangeEvent to all registered listeners. This code helps you to embed a Bubble chart in any AWT based application. A bubble chart displays information in three-dimensional way. This makes it convenient to collect series data objects.

The time series must not be applied with duplicates and the format must be valid.

String valueAxisLabel, CategoryDataset dataset, PlotOrientation orientation, boolean legend, boolean tooltips, boolean urls This method creates a line chart with default settings. The methods, which are taken sav the parent classes are used for opening a frame, closing a frame, changing the size, changing the background or foreground color, and listeners. Category Dataset This type of dataset is used for bar chart, line chart,etc.

Following is the code to create Bubble Chart from the above given information. It includes methods for converting charts to image formats and creating simple HTML image maps. Locale locale It creates a new second based on the supplied time and time zone. This code helps jfrsechart to embed a line chart in any AWT based application. String label The constructor NumberAxis uses default values where necessary.

String valueAxisLabel, CategoryDataset dataset, PlotOrientation orientation, boolean legend, boolean tooltips, boolean urls. This method is taken from the parent class PiePlot. Database The source having user input to be used for creating a dataset in the database.