Example usage for java.lang Float parseFloat

Introduction

In this page you can find the example usage for java.lang Float parseFloat.

Prototype

public static float parseFloat(String s) throws NumberFormatException

Source Link

Document

Returns a new float initialized to the value represented by the specified String , as performed by the valueOf method of class Float .

Usage

From source file:org.openimaj.demos.sandbox.PlotFlickrGeo.java

public static void main(String[] args) throws IOException {
    File inputcsv = new File("/Users/jsh2/Desktop/world-geo.csv");
    List<float[]> data = new ArrayList<float[]>(10000000);

    //read in images
    BufferedReader br = new BufferedReader(new FileReader(inputcsv));
    String line;/*w  w w  .  j a v a2 s. co  m*/
    int i = 0;
    while ((line = br.readLine()) != null) {
        String[] parts = line.split(",");

        float longitude = Float.parseFloat(parts[0]);
        float latitude = Float.parseFloat(parts[1]);

        data.add(new float[] { longitude, latitude });

        if (i++ % 10000 == 0)
            System.out.println(i);
    }

    System.out.println("Done reading");

    float[][] dataArr = new float[2][data.size()];
    for (i = 0; i < data.size(); i++) {
        dataArr[0][i] = data.get(i)[0];
        dataArr[1][i] = data.get(i)[1];
    }

    NumberAxis domainAxis = new NumberAxis("X");
    domainAxis.setRange(-180, 180);
    NumberAxis rangeAxis = new NumberAxis("Y");
    rangeAxis.setRange(-90, 90);
    FastScatterPlot plot = new FastScatterPlot(dataArr, domainAxis, rangeAxis);

    JFreeChart chart = new JFreeChart("Fast Scatter Plot", plot);
    chart.getRenderingHints().put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    ChartPanel chartPanel = new ChartPanel(chart);
    chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
    final ApplicationFrame frame = new ApplicationFrame("Title");
    frame.setContentPane(chartPanel);
    frame.pack();
    frame.setVisible(true);
}

From source file:Main.java

public static float str2float(String str) {
    return Float.parseFloat(str.trim());
}

From source file:Main.java

public static String yuan2fen(String yuan) {
    return ((int) ((Float.parseFloat(yuan)) * 100)) + "";
}

From source file:Main.java

public static String fen2yuan(String fen) {
    float temp = Float.parseFloat(fen);
    String tempStr = (temp / 100) + "";
    return tempStr;
}

From source file:Main.java

public static float getBuildVersion() {
    return Float.parseFloat(Build.VERSION.RELEASE);
}

From source file:Main.java

public static String liangweixiaoshu1(String value) {
    return String.format("%.2f", Float.parseFloat(value));
}

From source file:Main.java

public static boolean IsDecimal(String string) {
    try {//  w  w w  .j a  v a  2  s.  com
        float r = Float.parseFloat(string);
        return r != r + 1; // just to suppress the hint
    } catch (Exception e) {
        return false;
    }
}

From source file:Main.java

public static String truncateBidPrice(String bidPrice) {
    bidPrice = String.format("%.2f", Float.parseFloat(bidPrice));
    return bidPrice;
}

From source file:Main.java

public static float roundFloatTwoHouse(float value) {

    return Float.parseFloat(String.format(Locale.US, "%.2f", value));
}

From source file:Main.java

public static String getSpace(String range) {
    String space = "";
    float r = Float.parseFloat(range);
    if (r >= 1000) {
        space = (r / 1000 + 0.5f) + "km";
    } else {/*from  w  w  w .ja v a2 s  .  co  m*/
        space = r + "m";
    }
    return space;
}