chartgenerator.java

《Java网络程序设计.rar》包括三个网络程序的源代码。

            { createDate(1999, Calendar.JANUARY,30), new Double(56) },
            { createDate(1999, Calendar.JANUARY,30), new Double(39) },
            { createDate(1999, Calendar.JANUARY,30), new Double(47) },
            { createDate(1999, Calendar.JANUARY,30), new Double(49) },
            
            { createDate(1999, Calendar.JANUARY,31), new Double(53) },
            { createDate(1999, Calendar.JANUARY,31), new Double(39) },
            { createDate(1999, Calendar.JANUARY,31), new Double(52) },
            { createDate(1999, Calendar.JANUARY,31), new Double(47) },
            
            { createDate(1999, Calendar.FEBRUARY,1), new Double(51) },
            { createDate(1999, Calendar.FEBRUARY,1), new Double(30) },
            { createDate(1999, Calendar.FEBRUARY,1), new Double(45) },
            { createDate(1999, Calendar.FEBRUARY,1), new Double(47) },
            
            { createDate(1999, Calendar.FEBRUARY,2), new Double(47) },
            { createDate(1999, Calendar.FEBRUARY,2), new Double(30) },
            { createDate(1999, Calendar.FEBRUARY,2), new Double(34) },
            { createDate(1999, Calendar.FEBRUARY,2), new Double(46) },
            
            { createDate(1999, Calendar.FEBRUARY,3), new Double(57) },
            { createDate(1999, Calendar.FEBRUARY,3), new Double(37) },
            { createDate(1999, Calendar.FEBRUARY,3), new Double(44) },
            { createDate(1999, Calendar.FEBRUARY,3), new Double(56) },
            
            { createDate(1999, Calendar.FEBRUARY,4), new Double(49) },
            { createDate(1999, Calendar.FEBRUARY,4), new Double(40) },
            { createDate(1999, Calendar.FEBRUARY,4), new Double(47) },
            { createDate(1999, Calendar.FEBRUARY,4), new Double(44) },
            
            { createDate(1999, Calendar.FEBRUARY,5), new Double(46) },
            { createDate(1999, Calendar.FEBRUARY,5), new Double(38) },
            { createDate(1999, Calendar.FEBRUARY,5), new Double(43) },
            { createDate(1999, Calendar.FEBRUARY,5), new Double(40) },
            
            { createDate(1999, Calendar.FEBRUARY,6), new Double(55) },
            { createDate(1999, Calendar.FEBRUARY,6), new Double(38) },
            { createDate(1999, Calendar.FEBRUARY,6), new Double(39) },
            { createDate(1999, Calendar.FEBRUARY,6), new Double(53) },
            
            { createDate(1999, Calendar.FEBRUARY,7), new Double(50) },
            { createDate(1999, Calendar.FEBRUARY,7), new Double(33) },
            { createDate(1999, Calendar.FEBRUARY,7), new Double(37) },
            { createDate(1999, Calendar.FEBRUARY,7), new Double(37) },
            
            { createDate(1999, Calendar.FEBRUARY,8), new Double(59) },
            { createDate(1999, Calendar.FEBRUARY,8), new Double(34) },
            { createDate(1999, Calendar.FEBRUARY,8), new Double(57) },
            { createDate(1999, Calendar.FEBRUARY,8), new Double(43) },
            
            { createDate(1999, Calendar.FEBRUARY,9), new Double(48) },
            { createDate(1999, Calendar.FEBRUARY,9), new Double(39) },
            { createDate(1999, Calendar.FEBRUARY,9), new Double(46) },
            { createDate(1999, Calendar.FEBRUARY,9), new Double(47) },
            
            { createDate(1999, Calendar.FEBRUARY,10), new Double(55) },
            { createDate(1999, Calendar.FEBRUARY,10), new Double(30) },
            { createDate(1999, Calendar.FEBRUARY,10), new Double(37) },
            { createDate(1999, Calendar.FEBRUARY,10), new Double(30) },
            
            { createDate(1999, Calendar.FEBRUARY,11), new Double(60) },
            { createDate(1999, Calendar.FEBRUARY,11), new Double(32) },
            { createDate(1999, Calendar.FEBRUARY,11), new Double(56) },
            { createDate(1999, Calendar.FEBRUARY,11), new Double(36) },
            
            { createDate(1999, Calendar.FEBRUARY,12), new Double(56) },
            { createDate(1999, Calendar.FEBRUARY,12), new Double(42) },
            { createDate(1999, Calendar.FEBRUARY,12), new Double(53) },
            { createDate(1999, Calendar.FEBRUARY,12), new Double(54) },
            
            { createDate(1999, Calendar.FEBRUARY,13), new Double(49) },
            { createDate(1999, Calendar.FEBRUARY,13), new Double(42) },
            { createDate(1999, Calendar.FEBRUARY,13), new Double(45) },
            { createDate(1999, Calendar.FEBRUARY,13), new Double(42) },
            
            { createDate(1999, Calendar.FEBRUARY,14), new Double(55) },
            { createDate(1999, Calendar.FEBRUARY,14), new Double(42) },
            { createDate(1999, Calendar.FEBRUARY,14), new Double(47) },
            { createDate(1999, Calendar.FEBRUARY,14), new Double(54) },
            
            { createDate(1999, Calendar.FEBRUARY,15), new Double(49) },
            { createDate(1999, Calendar.FEBRUARY,15), new Double(35) },
            { createDate(1999, Calendar.FEBRUARY,15), new Double(38) },
            { createDate(1999, Calendar.FEBRUARY,15), new Double(35) },
            
            { createDate(1999, Calendar.FEBRUARY,16), new Double(47) },
            { createDate(1999, Calendar.FEBRUARY,16), new Double(38) },
            { createDate(1999, Calendar.FEBRUARY,16), new Double(43) },
            { createDate(1999, Calendar.FEBRUARY,16), new Double(42) },
            
            { createDate(1999, Calendar.FEBRUARY,17), new Double(53) },
            { createDate(1999, Calendar.FEBRUARY,17), new Double(42) },
            { createDate(1999, Calendar.FEBRUARY,17), new Double(47) },
            { createDate(1999, Calendar.FEBRUARY,17), new Double(48) },
            
            { createDate(1999, Calendar.FEBRUARY,18), new Double(47) },
            { createDate(1999, Calendar.FEBRUARY,18), new Double(44) },
            { createDate(1999, Calendar.FEBRUARY,18), new Double(46) },
            { createDate(1999, Calendar.FEBRUARY,18), new Double(44) },
            
            { createDate(1999, Calendar.FEBRUARY,19), new Double(46) },
            { createDate(1999, Calendar.FEBRUARY,19), new Double(40) },
            { createDate(1999, Calendar.FEBRUARY,19), new Double(43) },
            { createDate(1999, Calendar.FEBRUARY,19), new Double(44) },
            
            { createDate(1999, Calendar.FEBRUARY,20), new Double(48) },
            { createDate(1999, Calendar.FEBRUARY,20), new Double(41) },
            { createDate(1999, Calendar.FEBRUARY,20), new Double(46) },
            { createDate(1999, Calendar.FEBRUARY,20), new Double(41) } }
        };
        
        return null;  // broken, needs fixing...
        //return new DefaultXYDataset(new String[] { "IBM" }, data);
        
    }
    
    
    
    public JFreeChart createChart(int type, int initGradColor, int finalGradColor) {
        
        //CategoryDataset categoryData = createCategoryDataset();
        CategoryDataset categoryData = getCategoryDataset();
        JFreeChart chart;
 
        
        try {
            
            switch (type) {
                case 1:
                        
                    chart = ChartFactory.createVerticalBarChart(chartTitle, xmark, ymark, categoryData, true);
                   
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    Plot bPlot = chart.getPlot();
                    HorizontalCategoryAxis cAxis = (HorizontalCategoryAxis)bPlot.getAxis(Plot.HORIZONTAL_AXIS);
                    cAxis.setVerticalCategoryLabels(true);
                    return chart;
                    
                case 2:
                    chart = ChartFactory.createHorizontalBarChart("Horizontal Bar Chart",
                    "Categories",
                    "Values",
                    categoryData, true);
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    return chart;
                    
                case 3:
                    chart = ChartFactory.createLineChart("Line Chart",
                    "Categories",
                    "Values",
                    categoryData, true);
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    return chart;
                    
                case 4:
                    XYDataset xyData = new SampleXYDataset();
                    chart = ChartFactory.createXYChart("XY Plot",
                    "X",
                    "Y",
                    xyData, true);
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    Plot xyPlot = chart.getPlot();
                    //NumberAxis hhAxis = (NumberAxis) xyPlot.getAxis(Plot.HORIZONTAL_AXIS);
                    //hhAxis.setAutoTickValue(false);
                    //hhAxis.setTickValue(new Double(3.0));
                    return chart;
                    
                case 5:
                    XYDataset xyData1 = DemoDatasetFactory.createTimeSeriesCollection3();
                    chart = ChartFactory.createTimeSeriesChart("Time Series Chart",
                    "Date",
                    "USD per GBP",
                    xyData1, true);
                    //StandardTitle title = (StandardTitle)chart.getTitle();
                    //if (title==null) {
                    //    title = new StandardTitle("Value of GBP", new Font("Arial", Font.BOLD, 12));
                    // }
                    //title.setTitle("Value of GBP");
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    //Plot myPlot = chart.getPlot();
                    //Axis myVerticalAxis = myPlot.getAxis(Plot.VERTICAL_AXIS);
                    //myVerticalAxis.setLabel("USD per GBP");
                    //DateAxis myHorizontalAxis = (DateAxis) myPlot.getAxis(Plot.HORIZONTAL_AXIS);
                    //myHorizontalAxis.setAutoTickValue(false);
                    //myHorizontalAxis.setAutoRange(false);
                    //myHorizontalAxis.setMinimumDate(new GregorianCalendar(1999, 4, 1).getTime());
                    //myHorizontalAxis.setMaximumDate(new GregorianCalendar(1999, 5, 1).getTime());
                    //myHorizontalAxis.setAutoTickValue(false);
                    //myHorizontalAxis.getTickLabelFormatter().applyPattern("d-MMM-y");
                    //myHorizontalAxis.setTickUnit(new DateUnit(Calendar.DATE, 3));
                    
                    VerticalNumberAxis vnAxis = (VerticalNumberAxis)chart.getPlot().getAxis(Plot.VERTICAL_AXIS);
                    //vnAxis.setMinimumAxisValue(new Double(10000.0));
                    //vnAxis.setMaximumAxisValue(new Double(11000.0));
                    //vnAxis.setAutoRange(false);
                    //vnAxis.setAutoTickUnits(false);
                    vnAxis.setAutoRangeIncludesZero(false);
                    //vnAxis.setTickUnits(new Double(0.020));
                    //vnAxis.getTickLabelFormatter().applyLocalizedPattern("0.0000");
                    chart.setDataset(xyData1);
                    return chart;
                    
                case 6:
                    categoryData = createCategoryDataset();
                    PieDataset pieData = Datasets.createPieDataset(categoryData, 0);
                    chart = ChartFactory.createPieChart("Pie Chart", pieData, true);
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    return chart;
                    
                case 7:
                    // Added by Andrzej Porebski
                    HighLowDataset hlData = createHighLowDataset();
                    chart = ChartFactory.createHighLowChart("High-Low-Open-Close IBM",
                    "Date",
                    "Price",
                    hlData, true);
                    //title = (StandardTitle)chart.getTitle();
                    //title.setTitle("High-Low-Open-Close IBM");
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    Plot myPlot = chart.getPlot();
                    Axis myVerticalAxis = myPlot.getAxis(Plot.VERTICAL_AXIS);
                    myVerticalAxis.setLabel("Price in ($) per share");
                    return chart;
                    
                case 8:
                    // moving avg
                    XYDataset xyData2 = DemoDatasetFactory.createTimeSeriesCollection3();
                    MovingAveragePlotFitAlgorithm mavg = new MovingAveragePlotFitAlgorithm();
                    mavg.setPeriod(30);
                    PlotFit pf = new PlotFit(xyData2, mavg);
                    xyData2 = pf.getFit();
                    chart = ChartFactory.createTimeSeriesChart("Moving Average", "Date", "Value",
                    xyData2, true);
                    //title = (StandardTitle)chart.getTitle();
                    //title.setTitle("30 day moving average of GBP");
                    chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    myPlot = chart.getPlot();
                    myVerticalAxis = myPlot.getAxis(Plot.VERTICAL_AXIS);
                    myVerticalAxis.setLabel("USD per GBP");
                    vnAxis = (VerticalNumberAxis)chart.getPlot().getAxis(Plot.VERTICAL_AXIS);
                    vnAxis.setAutoRangeIncludesZero(false);
                    chart.setDataset(xyData2);
                    return chart;
                    
                case 9:
                    // linear fit
                    XYDataset xyData3 = DemoDatasetFactory.createTimeSeriesCollection2();
                    pf = new PlotFit(xyData3, new LinearPlotFitAlgorithm());
                    xyData3 = pf.getFit();
                    chart = ChartFactory.createTimeSeriesChart("Linear Fit", "Date", "Value",
                    xyData3, true);
                    //title = (StandardTitle)chart.getTitle();
                    //title.setTitle("Linear Fit of GBP");
                    //chart.setChartBackgroundPaint(new GradientPaint(0, 0, getColor( initGradColor ), 1000, 0, getColor( finalGradColor )));
                    myPlot = chart.getPlot();
                    myVerticalAxis = myPlot.getAxis(Plot.VERTICAL_AXIS);
                    myVerticalAxis.setLabel("USD per GBP");
                    
                    vnAxis = (VerticalNumberAxis)chart.getPlot().getAxis(Plot.VERTICAL_AXIS);
                    vnAxis.setAutoRangeIncludesZero(false);
                    chart.setDataset(xyData3);
                    return chart;
                    
                default:
                    return null;
                    
            }
            
        }
        catch (Exception e) {
            return null;
        }
        
    }
}