To pytanie dotyczypodobne pytanie zamieściłem tutaj kilka dni temu...

Oto interfejs, który pokaże, gdzie chcę wyświetlić wykres:

Chcę wyświetlić wykres na dużym JPanelu po prawej stronie. Wykres ma na celu porównanie statystyk danego gracza ze średnią kraju i ogólną średnią (z trzema słupkami). Wykres (powinien) wiedzieć, który gracz powinien pokazać porównanie, pobierając nazwę gracza z pola tekstowego (tego z „getPlayerName” już w nim zawartego. Podobnie jak w przypadku mojego podobnego pytania wspomnianego wcześniej, stworzyłem klasę (tym razem o nazwie PlayerVsCountryVsOverallChart) - który zajmie się budowaniem wykresu dla tej konkretnej statystyki.

Kod z klasy „PlayerVsCountryVsOverallChart” jest dość podobny, ale myślę, że istnieje pewna logika, która uniemożliwia wyświetlanie wykresu (lub nawet jego tworzenie). Ponieważ moja logika wciąż się rozwija (z rzeczami związanymi z JFreeCharts), byłbym bardzo wdzięczny, gdyby ktoś mógł zajrzeć do tego dla mnie.

Oto kod klasy PlayerVsCountryVsOverallChart - minus wymagany import:

/**
 * This class is responsible for displaying the chart for 
 * the "Player vs Country vs Overall" functionality in the 
 * "Single Player" tab.
 * @author attfire1
 */
public class PlayerVsCountryVsOverallChart extends JPanel
{
    private static final long serialVersionUID = 1L;
    private ArrayList<Player> players;
    private StatUtilities stats;
    public String yAxisLabel = "";
    private String chosenPlayer;
    public String[] compareStatsOptions = new String[] { "Average Balls Bowled", "Average of Bowling Averages", "Average Career Length", "Average Economy Rate", "Average Number of Five Wicket Innings", "Average Innings Played", "Average Matches Played", "Average Runs Conceded", "Average Strike Rate", "Average Wickets Taken" };
    ;

    /**
     * This constructor is responsible for producing the stats bar chart in 
     * the "Single Player Stats" tab in AppInterface.
     * @param applicationTitle
     * @param chartTitle
     * @param players The list of players to iterate through
     * @param option The option which determines what statistics to display
     * @param chosenPlayer The chosen player's name
     */
    public PlayerVsCountryVsOverallChart(String applicationTitle, String chartTitle, ArrayList<Player> players, int option, String chosenPlayer) {
        //super(applicationTitle);

        this.players = players;
        this.chosenPlayer = chosenPlayer;
        stats = new StatUtilities();

        final CategoryDataset dataset = createDataset(option, chosenPlayer);

        // based on the dataset we create the chart
        final JFreeChart chart = createChart(dataset, applicationTitle);

        // we put the chart into a panel
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new Dimension(500, 270));

        // Don't forget me...
        setLayout(new BorderLayout());
        add(chartPanel); 
    }

    /**
     * This method returns the nth occurrence of a 
     * character in a given string.
     * 
     * Sourced from https://stackoverflow.com/questions/3976616/how-to-find-nth-occurrence-of-character-in-a-string.
     * @param str The string to get the index of a character from.
     * @param c The character to get the index of.
     * @param n What occurrence of character to retrieve.
     * @return The nth occurrence of a character.
     */
    public static int nthOccurrence(String str, char c, int n) {
        int pos = str.indexOf(c, 0);
        while (n-- > 0 && pos != -1)
            pos = str.indexOf(c, pos+1);
        return pos;
    }



/** * Creates a sample dataset */

    private  CategoryDataset createDataset(int graphDisplayOption, String playerChosen) {

        // row keys... "series"
        final String player = "Player";
        final String country = "Country";
        final String overall = "Overall";



        ArrayList<String> countries = new ArrayList<String>();
        for (Player p : players) {
            countries.add(p.getCountryName());
        }

        //these are also the "column keys"
        Set<String> countryNames = new HashSet<String>(countries);

        final DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        /*
         * The below code block uses a switch statement to determine
         * which type of stats to display in the graph (country by country).
         * 
         * Options for the switch statement are as follows:
         * 
         * 1 = Average Balls Bowled
         * 2 = Average of Bowling Averages
         * 3 = Average Career Lengths
         * 4 = Average Economy Rates
         * 5 = Average Number of 5 Wicket Innings
         * 6 = Average Innings Played
         * 7 = Average Matches Played
         * 8 = Average Runs Conceded
         * 9 = Average Strike Rates
         * 10 = Average WicketsTaken
         */
        for(int i = 0; i < players.size(); i++)
        {
            //if the player's name in iteration i equals the chosen player's name
            if(players.get(i).getPlayerName().equals(playerChosen))
            {
            switch(graphDisplayOption)
                {
                    case 1:
                        yAxisLabel = compareStatsOptions[0];
                        dataset.addValue(players.get(i).getBallsBowled(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveBallsBowled(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveBallsBowled(players), overall, players.get(i).getPlayerName());
                        break;
                    case 2:
                        yAxisLabel = compareStatsOptions[1];
                        dataset.addValue(players.get(i).getBowlingAverage(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveBowlingAverage(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveBowlingAverage(players), overall, players.get(i).getPlayerName());
                        break;
                    case 3:
                        yAxisLabel = compareStatsOptions[2];
                        dataset.addValue(players.get(i).calcCareerSpan(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveCareerLength(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveCareerLength(players), overall, players.get(i).getPlayerName());
                        break;
                    case 4:
                        yAxisLabel = compareStatsOptions[3];
                        dataset.addValue(players.get(i).getEconomyRate(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveEconRate(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveEconRate(players), overall, players.get(i).getPlayerName());
                        break;
                    case 5:
                        yAxisLabel = compareStatsOptions[4];
                        dataset.addValue(players.get(i).getFiveWicketsInnings(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveFiveWicketsInns(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveFiveWicketsInns(players), overall, players.get(i).getPlayerName());
                        break;
                    case 6:
                        yAxisLabel = compareStatsOptions[5];
                        dataset.addValue(players.get(i).getInningsPlayed(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveInningsPerCountry(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveInningsPerPlayer(players), overall, players.get(i).getPlayerName());
                        break;
                    case 7:
                        yAxisLabel = compareStatsOptions[6];
                        dataset.addValue(players.get(i).getMatchesPlayed(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveMatchesPerPlayer(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveMatchesPerPlayer(players), overall, players.get(i).getPlayerName());
                        break;
                    case 8:
                        yAxisLabel = compareStatsOptions[7];
                        dataset.addValue(players.get(i).getRunsConceded(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveRunsConceded(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveRunsConceded(players), overall, players.get(i).getPlayerName());
                        break;
                    case 9:
                        yAxisLabel = compareStatsOptions[8];
                        dataset.addValue(players.get(i).getStrikeRate(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveStrikeRate(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveStrikeRate(players), overall, players.get(i).getPlayerName());
                        break;
                    case 10:
                        yAxisLabel = compareStatsOptions[9];
                        dataset.addValue(players.get(i).getWicketsTaken(), player, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveWickets(players, players.get(i).getCountryName()), country, players.get(i).getPlayerName());
                        dataset.addValue(stats.aveWickets(players), overall, players.get(i).getPlayerName());
                        break;
                }


            }
        }
        return dataset;

    }


/** * Creates a chart */

    private JFreeChart createChart(CategoryDataset dataset, String title) {

        // create the chart...
        final JFreeChart chart = ChartFactory.createBarChart(
            title,         // chart title
            "Countries",               // domain axis label
            yAxisLabel,                  // range axis label
            dataset,                  // data
            PlotOrientation.VERTICAL, // orientation
            true,                     // include legend
            true,                     // tooltips?
            false                     // URLs?
        );

        // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...

        // set the background color for the chart...
        chart.setBackgroundPaint(Color.white);

        // get a reference to the plot for further customisation...
        final CategoryPlot plot = chart.getCategoryPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);

        // set the range axis to display integers only...
        final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

        // disable bar outlines...
        final BarRenderer renderer = (BarRenderer) plot.getRenderer();
        renderer.setDrawBarOutline(false);

        // set up gradient paints for series...
        final GradientPaint gp0 = new GradientPaint(
            0.0f, 0.0f, Color.blue, 
            0.0f, 0.0f, Color.lightGray
        );
        final GradientPaint gp1 = new GradientPaint(
            0.0f, 0.0f, Color.green, 
            0.0f, 0.0f, Color.lightGray
        );
        final GradientPaint gp2 = new GradientPaint(
            0.0f, 0.0f, Color.red, 
            0.0f, 0.0f, Color.lightGray
        );
        renderer.setSeriesPaint(0, gp0);

        final CategoryAxis domainAxis = plot.getDomainAxis();
        domainAxis.setCategoryLabelPositions(
            CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0)
        );
        // OPTIONAL CUSTOMISATION COMPLETED.

        return chart;

    }
}

Nie byłem pewien, co napisać dla SSCCE z tej klasy - mam wrażenie, że problem może leżeć w instrukcji case-switch w metodzie „CategoryDataset createDataset” ...

Oto kod nasłuchiwania przycisku dla przycisku „Go”, który powinien generować wykres po kliknięciu (w połączeniu z opcją wybraną w JComboBox obok i nazwą gracza z pola tekstowego):

private void confirmGraphBtnActionPerformed(java.awt.event.ActionEvent evt) {                                                
        String selectedOption = String.valueOf(chooseGraphOption.getSelectedItem()).toString();
        int statsOption = options.indexOf(selectedOption);

        processCvPvOchart(statsOption);
    } 

Wreszcie, oto kod metody processCvPvOchart:

/**
     * This method processes the chart for the "Player vs Country vs Overall" 
     * player stats, in the "Single Player Stats" tab.
     * @param option The option for which stats to display.
     */
    public void processCvPvOchart(int option)
    {
        //pVcVo = "Player vs Country vs Overall"
        String title = pVcVo.get(option);
        PlayerVsCountryVsOverallChart chart = new PlayerVsCountryVsOverallChart(title, "", players, option + 1, getPlayerName.getText());
        displayGraphPanel.add(chart);
        repaint();

    }

Popełniłem ten kod do mojego repozytorium projektu na GitHub pod adresemhttps://github.com/rattfieldnz/Java_Projects/tree/master/PCricketStats. Uruchamianie tego i testowanie może być korzystne dla osób, które chcą mi pomóc. Gdy dowiem się więcej o usuwaniu mojego kodu dla SSCCE, dołączę mniejsze fragmenty kodu.