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    <p>If you can use Java 7, then check out the JavaFX APIs. There is a stock ticker that comes with Oracle's Ensemble samples (chart -> lines -> advanced stock). It is a good start for what you are trying to achieve. Here is the code provided by Oracle:</p> <pre><code>import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.stage.Stage; import javafx.animation.Animation; import javafx.animation.KeyFrame; import javafx.animation.Timeline; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.chart.LineChart; import javafx.scene.chart.NumberAxis; import javafx.scene.chart.XYChart; import javafx.util.Duration; /** * A simulated stock line chart. * * @see javafx.scene.chart.Chart * @see javafx.scene.chart.LineChart * @see javafx.scene.chart.NumberAxis * @see javafx.scene.chart.XYChart */ public class AdvancedStockLineChartSample extends Application { private XYChart.Series&lt;Number,Number&gt; hourDataSeries; private XYChart.Series&lt;Number,Number&gt; minuteDataSeries; private NumberAxis xAxis; private Timeline animation; private double hours = 0; private double minutes = 0; private double timeInHours = 0; private double prevY = 10; private double y = 10; private void init(Stage primaryStage) { Group root = new Group(); primaryStage.setScene(new Scene(root)); root.getChildren().add(createChart()); // create timeline to add new data every 60th of second animation = new Timeline(); animation.getKeyFrames().add(new KeyFrame(Duration.millis(1000/60), new EventHandler&lt;ActionEvent&gt;() { @Override public void handle(ActionEvent actionEvent) { // 6 minutes data per frame for(int count=0; count &lt; 6; count++) { nextTime(); plotTime(); } } })); animation.setCycleCount(Animation.INDEFINITE); } protected LineChart&lt;Number, Number&gt; createChart() { xAxis = new NumberAxis(0,24,3); final NumberAxis yAxis = new NumberAxis(0,100,10); final LineChart&lt;Number,Number&gt; lc = new LineChart&lt;Number,Number&gt;(xAxis,yAxis); // setup chart lc.setId("lineStockDemo"); lc.setCreateSymbols(false); lc.setAnimated(false); lc.setLegendVisible(false); lc.setTitle("ACME Company Stock"); xAxis.setLabel("Time"); xAxis.setForceZeroInRange(false); yAxis.setLabel("Share Price"); yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis,"$",null)); // add starting data hourDataSeries = new XYChart.Series&lt;Number,Number&gt;(); hourDataSeries.setName("Hourly Data"); minuteDataSeries = new XYChart.Series&lt;Number,Number&gt;(); minuteDataSeries.setName("Minute Data"); // create some starting data hourDataSeries.getData().add(new XYChart.Data&lt;Number,Number&gt;(timeInHours,prevY)); minuteDataSeries.getData().add(new XYChart.Data&lt;Number,Number&gt;(timeInHours,prevY)); for (double m=0; m&lt;(60); m++) { nextTime(); plotTime(); } lc.getData().add(minuteDataSeries); lc.getData().add(hourDataSeries); return lc; } private void nextTime() { if (minutes == 59) { hours ++; minutes = 0; } else { minutes ++; } timeInHours = hours + ((1d/60d)*minutes); } private void plotTime() { if ((timeInHours % 1) == 0) { // change of hour double oldY = y; y = prevY - 10 + (Math.random()*20); prevY = oldY; while (y &lt; 10 || y &gt; 90) y = y - 10 + (Math.random()*20); hourDataSeries.getData().add(new XYChart.Data&lt;Number, Number&gt;(timeInHours, prevY)); // after 25hours delete old data if (timeInHours &gt; 25) hourDataSeries.getData().remove(0); // every hour after 24 move range 1 hour if (timeInHours &gt; 24) { xAxis.setLowerBound(xAxis.getLowerBound()+1); xAxis.setUpperBound(xAxis.getUpperBound()+1); } } double min = (timeInHours % 1); double randomPickVariance = Math.random(); if (randomPickVariance &lt; 0.3) { double minY = prevY + ((y-prevY) * min) - 4 + (Math.random()*8); minuteDataSeries.getData().add(new XYChart.Data&lt;Number,Number&gt;(timeInHours,minY)); } else if (randomPickVariance &lt; 0.7) { double minY = prevY + ((y-prevY) * min) - 6 + (Math.random()*12); minuteDataSeries.getData().add(new XYChart.Data&lt;Number,Number&gt;(timeInHours,minY)); } else if (randomPickVariance &lt; 0.95) { double minY = prevY + ((y-prevY) * min) - 10 + (Math.random()*20); minuteDataSeries.getData().add(new XYChart.Data&lt;Number,Number&gt;(timeInHours,minY)); } else { double minY = prevY + ((y-prevY) * min) - 15 + (Math.random()*30); minuteDataSeries.getData().add(new XYChart.Data&lt;Number,Number&gt;(timeInHours,minY)); } // after 25hours delete old data if (timeInHours &gt; 25) minuteDataSeries.getData().remove(0); } public void play() { animation.play(); } @Override public void stop() { animation.pause(); } @Override public void start(Stage primaryStage) throws Exception { init(primaryStage); primaryStage.show(); play(); } public static void main(String[] args) { launch(args); } } </code></pre> <p>Screen shot: <img src="https://i.stack.imgur.com/wvR1Z.png" alt="enter image description here"></p>
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    1. PODrawing a graph that updates in realtime based on input using Java?
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    1. USonebeartoe
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      1. VTUpMod
    1. COI was unaware of JavaFX. Although I used JFreeChart, this is useful. Thank you.
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    2. COYou're welcome.
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