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charts4j is a free, lightweight charts & graphs Java API. It enables developers to programmatically create the charts available in the Google Chart Tools through a straightforward and intuitive Java API.

News

charts4j source now on github

Using charts4j in production? I would love to hear about it.

Features

• Supports many features of the Google Chart Tools
• Hides the ugly details of creating the URL parameters that are necessary for communicating with the Google Chart Tools
• Can be incorporated into any Internet enabled Swing or web application environment (JSP/Servlet, GWT, Spring MVC, etc.)
• 100% pure core Java solution. No need for special graphics libraries, etc.
• Super-scalable & Lightweight. Only one 160Kb jar and an Internet connection required
• Well documented
• GWT client-side support.
• JFreeChart Eastwood Servlet integration.
• Works on Android
• Best of all, it is FREE!

Chart Gallery with Code Examples

Line Chart Code Example 1

Line Chart Code Example 2

Bar Chart Code Example 1

Bar Chart Code Example 2

Scatter Chart Code Example

Radar Chart Code Example 1

Radar Chart Code Example 2

Pie Chart Code Example 1

Pie Chart Code Example 2

XY Chart Code Example

Map Chart Code Example

Venn Chart Code Example

Google-O-Meter Code Example

Very Simple Code Example

Data, labels, grids, range markers are expressed in the same way throughout charts4j so the chart elements snap together nicely and consistently when the chart is rendered.

Code Example

The same plot object can be expressed through five different chart types.

Line Chart

Bar Chart

Radar Chart

Scatter Plot

XYLine Chart

Same Plot, Different Charts

Java Swing Example