Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.main.controller; import com.main.dto.FrequencyDTO; import java.io.File; import java.util.ArrayList; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.data.general.DefaultPieDataset; import org.omg.PortableInterceptor.INACTIVE; /** * * @author Ashish */ public class ChartDIG { String chartTitle; String xTitle; String yTitle; ArrayList<String> arrayList; int width; int height; public ChartDIG(String chartTitle, String xTitle, String yTitle, ArrayList<String> arrayList, int width, int height) { this.chartTitle = chartTitle; this.xTitle = xTitle; this.yTitle = yTitle; this.arrayList = arrayList; this.width = width; this.height = height; } public File generateBarChart() throws Exception { final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); for (String string : arrayList) { dataset.addValue(Integer.parseInt(string), string, string); } JFreeChart barChart = ChartFactory.createBarChart(chartTitle, xTitle, yTitle, dataset, PlotOrientation.VERTICAL, true, true, false); // int width = 640; // /* Width of the image */ // int height = 480; /* Height of the image */ File BarChart = new File("chart/" + chartTitle + ".jpeg"); ChartUtilities.saveChartAsJPEG(BarChart, barChart, width, height); return BarChart; } public File generatePieChart() throws Exception { DefaultPieDataset dataset = new DefaultPieDataset(); for (String arrayList1 : arrayList) { dataset.setValue(arrayList1, Double.parseDouble(arrayList1)); } JFreeChart chart = ChartFactory.createPieChart(chartTitle, // chart title dataset, // data true, // include legend true, false); File pieChart = new File("chart/" + chartTitle + ".jpeg"); ChartUtilities.saveChartAsJPEG(pieChart, chart, width, height); return pieChart; } }