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.js.quickestquail.ui.stats; import com.js.quickestquail.model.DriveManager; import com.js.quickestquail.model.Movie; import com.js.quickestquail.imdb.CachedMovieProvider; import java.awt.*; import java.util.ArrayList; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; /** * * @author joris */ public class YearStat extends JPanel { public YearStat() { setLayout(new BorderLayout()); add(new ChartPanel(generateChart()), BorderLayout.CENTER); } private CategoryDataset generateDataset() { Map<Integer, Integer> yearFrequency = new HashMap<>(); for (String id : DriveManager.get().getSelected().values()) { Movie mov = CachedMovieProvider.get().getMovieByID(id); int year = mov.getYear(); if (!yearFrequency.containsKey(year)) { yearFrequency.put(year, 1); } else { yearFrequency.put(year, yearFrequency.get(year) + 1); } } List<Entry<Integer, Integer>> entries = new ArrayList<>(yearFrequency.entrySet()); java.util.Collections.sort(entries, new Comparator<Entry<Integer, Integer>>() { @Override public int compare(Entry<Integer, Integer> o1, Entry<Integer, Integer> o2) { return o1.getKey().compareTo(o2.getKey()); } }); // convert to proper format DefaultCategoryDataset dataset = new DefaultCategoryDataset(); for (Entry<Integer, Integer> en : entries) { dataset.addValue(en.getValue(), java.util.ResourceBundle.getBundle("i18n/i18n").getString("stat.year.xaxis"), en.getKey()); } // return return dataset; } private JFreeChart generateChart() { JFreeChart lineChart = ChartFactory.createLineChart( java.util.ResourceBundle.getBundle("i18n/i18n").getString("stat.year.title"), java.util.ResourceBundle.getBundle("i18n/i18n").getString("stat.year.xaxis"), java.util.ResourceBundle.getBundle("i18n/i18n").getString("stat.year.yaxis"), generateDataset(), PlotOrientation.VERTICAL, true, true, false); lineChart.setBackgroundPaint(new Color(0xFF, 0xFF, 0xFF, 0)); lineChart.getPlot().setBackgroundPaint(Color.WHITE); return lineChart; } }