jfreeChart1.scala

import org.jfree.chart.{ChartPanel, ChartFactory, JFreeChart, ChartUtilities}
import org.jfree.data.general.DefaultPieDataset

val dataset = new DefaultPieDataset()

dataset.setValue("A", 75)
dataset.setValue("B", 10)
dataset.setValue("C", 10)
dataset.setValue("D", 5)

val chart = ChartFactory.createPieChart(
  "Sample Pie Chart", // Title
  dataset,            // Dataset 
  true,               // Show legend
  true,               // Tooltips on
  false 
)

// Save chart to a png file 
//---------------------------
ChartUtilities.saveChartAsPNG(new java.io.File("mychart.png"), chart, 500, 500)

// Show Chart in a Java Swing Frame
//--------------------------------------
val frame = new javax.swing.JFrame()
frame.add(new ChartPanel(chart))
frame.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE)
frame.setSize(693, 513)
frame.setTitle("Sample Pie Chart")
frame.setVisible(true)