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.charts; import com.std.DayRange; import com.std.Index; import com.std.YStockQuote; import java.awt.Color; import java.awt.Dimension; import java.text.DateFormat; import java.text.DecimalFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Collections; import java.util.Date; import java.util.TimeZone; import javax.swing.JFrame; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.DateTickMarkPosition; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.SegmentedTimeline; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.labels.StandardXYToolTipGenerator; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.CandlestickRenderer; import org.jfree.chart.renderer.xy.StandardXYItemRenderer; import org.jfree.chart.title.LegendTitle; import org.jfree.data.time.Day; import org.jfree.data.time.MovingAverage; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.AbstractXYDataset; import org.jfree.data.xy.DefaultOHLCDataset; import org.jfree.data.xy.OHLCDataItem; import org.jfree.data.xy.XYDataset; import org.jfree.ui.RectangleEdge; /** * * @author Eric */ public class TenYearChart { TimeSeries close = new TimeSeries("Closing Price"); ChartPanel chartPanel; public TenYearChart(YStockQuote currentStock) throws ParseException { DateAxis domainAxis = new DateAxis("Date"); NumberAxis rangeAxis = new NumberAxis("Price"); CandlestickRenderer renderer = new CandlestickRenderer(); XYDataset dataset = getDataSet(currentStock); XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer); //Do some setting up, see the API Doc renderer.setBaseToolTipGenerator( new StandardXYToolTipGenerator(StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT, new SimpleDateFormat("d-MMM-yyyy"), new DecimalFormat("0.00"))); renderer.setDrawVolume(false); rangeAxis.setAutoRangeIncludesZero(false); domainAxis.setDateFormatOverride(new SimpleDateFormat("dd-MM-yy")); domainAxis.setTickMarkPosition(DateTickMarkPosition.MIDDLE); //Now create the chart and chart panel JFreeChart chart = new JFreeChart(currentStock.get_name(), null, mainPlot, false); chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new Dimension(900, 400)); XYPlot plot = (XYPlot) chart.getPlot(); LegendTitle legend = new LegendTitle(plot); chart.addLegend(legend); chart.getLegend().setVisible(true); chart.getLegend().setPosition(RectangleEdge.BOTTOM); ValueAxis yAxis = (ValueAxis) plot.getRangeAxis(); DateAxis xAxis = (DateAxis) plot.getDomainAxis(); xAxis.setDateFormatOverride(new SimpleDateFormat("MMM y")); xAxis.setAutoTickUnitSelection(true); xAxis.setAutoRange(true); renderer.setAutoWidthFactor(0.5); renderer.setUpPaint(Color.green); renderer.setDownPaint(new Color(0xc0, 0x00, 0x00)); renderer.setSeriesPaint(0, Color.BLACK); StandardXYItemRenderer renderer1 = new StandardXYItemRenderer(); renderer1.setSeriesPaint(0, Color.BLUE); TimeSeries movingAverage30 = MovingAverage.createMovingAverage(close, "MA(30)", 30, 0); Double currMA30 = (Double) movingAverage30.getDataItem(movingAverage30.getItemCount() - 1).getValue(); currMA30 = Math.round(currMA30 * 100.0) / 100.0; movingAverage30.setKey("MA(30): " + currMA30); TimeSeriesCollection collection = new TimeSeriesCollection(); collection.addSeries(movingAverage30); plot.setDataset(1, collection); plot.setRenderer(1, renderer1); chartPanel.revalidate(); chartPanel.repaint(); chartPanel.revalidate(); chartPanel.repaint(); } protected AbstractXYDataset getDataSet(YStockQuote currentStock) throws ParseException { //This is the dataset we are going to create DefaultOHLCDataset result = null; //This is the data needed for the dataset OHLCDataItem[] data; //This is where we go get the data, replace with your own data source data = getData(currentStock); //Create a dataset, an Open, High, Low, Close dataset result = new DefaultOHLCDataset(currentStock.get_symbol(), data); return result; } //This method uses yahoo finance to get the OHLC data protected OHLCDataItem[] getData(YStockQuote currentStock) throws ParseException { ArrayList<OHLCDataItem> dataItems = new ArrayList<OHLCDataItem>(); DateFormat df; if (currentStock instanceof Index) df = new SimpleDateFormat("y-MM-dd"); else df = new SimpleDateFormat("dd-MM-yy"); String TenYearDate = df.format(DayRange.ten_year); ArrayList<String> historicalData = currentStock.get_historical_data(); int startIndex = currentStock.find_historical_data_index(TenYearDate); while (startIndex > 0) { String[] data = historicalData.get(startIndex).split(","); Date date = df.parse(data[0]); double open = Double.parseDouble(data[1]); double high = Double.parseDouble(data[2]); double low = Double.parseDouble(data[3]); double close = Double.parseDouble(data[4]); this.close.addOrUpdate(new Day(date), close); double volume; try { volume = Double.parseDouble(data[5]); } catch (NumberFormatException nfe) { volume = 0; } OHLCDataItem item = new OHLCDataItem(date, open, high, low, close, volume); dataItems.add(item); startIndex -= 3; } OHLCDataItem[] OHLCData = dataItems.toArray(new OHLCDataItem[dataItems.size()]); return OHLCData; } public ChartPanel getChartPanel() { return this.chartPanel; } }