Example usage for java.util Hashtable put

Introduction

In this page you can find the example usage for java.util Hashtable put.

Prototype

public synchronized V put(K key, V value)

Source Link

Document

Maps the specified key to the specified value in this hashtable.

Usage

From source file:Main.java

/**
 * Create a Hashtable by pairing the given keys with the given values.
 * Equivalent to python code <code>dict(zip(keys, values))</code>
 *//*  ww w .  j a v a  2  s.  c om*/
public static Hashtable createHashtable(Vector keys, Vector values) {
    Enumeration keyEnum = keys.elements();
    Enumeration valEnum = values.elements();

    Hashtable result = new Hashtable();
    while (keyEnum.hasMoreElements() && valEnum.hasMoreElements())
        result.put(keyEnum.nextElement(), valEnum.nextElement());

    return result;
}

From source file:Main.java

/**
 * return unified reference.//from w  w  w .  j  av  a2 s. com
 *
 * @param hash
 *            the hash
 * @param object
 *            the object
 * @return the object
 */
public static Object unifyReferences(final Hashtable hash, Object object) {
    final Object itemAtHash = hash.get(object.hashCode());
    if (itemAtHash == null) {
        hash.put(object.hashCode(), object);
    } else {
        object = itemAtHash;
    }
    return object;
}

From source file:Main.java

static Hashtable hashtableClone(Hashtable ht) {
    if (ht == null)
        return null;

    Hashtable htresp = new Hashtable();
    Enumeration e = ht.keys();// ww  w . j  av a 2  s .  c o m

    while (e.hasMoreElements()) {
        Object element = e.nextElement();
        htresp.put(element, ht.get(element));
    }
    return htresp;
}

From source file:com.emobtech.facebook.api.graph.Friends.java

/**
 * <p>/*from  w  ww  .  jav  a2s  . com*/
 * Parses the JSON content.
 * </p>
 * @param json Content;
 * @return Array of data.
 * @throws JSONException If any error occurs during parsing. 
 */
private static Hashtable[] parseJSON(String json) throws JSONException {
    JSONObject jo = new JSONObject(json);
    JSONArray ja = jo.getJSONArray("data");
    Hashtable[] fa = new Hashtable[ja.length()];
    //
    for (int i = 0; i < fa.length; i++) {
        jo = (JSONObject) ja.get(i);
        Hashtable fo = new Hashtable(2);
        //
        fo.put("id", jo.get("id"));
        fo.put("name", jo.get("name"));
        //
        fa[i] = fo;
    }
    //
    return fa;
}

From source file:Utils.java

/** 
 * Renders a paragraph of text (line breaks ignored) to an image (created and returned). 
 *
 * @param font The font to use/*  www.j  av a 2s .c  o  m*/
 * @param textColor The color of the text
 * @param text The message
 * @param width The width the text should be limited to
 * @return An image with the text rendered into it
 */
public static BufferedImage renderTextToImage(Font font, Color textColor, String text, int width) {
    Hashtable map = new Hashtable();
    map.put(TextAttribute.FONT, font);
    AttributedString attributedString = new AttributedString(text, map);
    AttributedCharacterIterator paragraph = attributedString.getIterator();

    FontRenderContext frc = new FontRenderContext(null, false, false);
    int paragraphStart = paragraph.getBeginIndex();
    int paragraphEnd = paragraph.getEndIndex();
    LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc);

    float drawPosY = 0;

    //First time around, just determine the height
    while (lineMeasurer.getPosition() < paragraphEnd) {
        TextLayout layout = lineMeasurer.nextLayout(width);

        // Move it down
        drawPosY += layout.getAscent() + layout.getDescent() + layout.getLeading();
    }

    BufferedImage image = createCompatibleImage(width, (int) drawPosY);
    Graphics2D graphics = (Graphics2D) image.getGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

    drawPosY = 0;
    lineMeasurer.setPosition(paragraphStart);
    while (lineMeasurer.getPosition() < paragraphEnd) {
        TextLayout layout = lineMeasurer.nextLayout(width);

        // Move y-coordinate by the ascent of the layout.
        drawPosY += layout.getAscent();

        /* Compute pen x position.  If the paragraph is
           right-to-left, we want to align the TextLayouts
           to the right edge of the panel.
         */
        float drawPosX;
        if (layout.isLeftToRight()) {
            drawPosX = 0;
        } else {
            drawPosX = width - layout.getAdvance();
        }

        // Draw the TextLayout at (drawPosX, drawPosY).
        layout.draw(graphics, drawPosX, drawPosY);

        // Move y-coordinate in preparation for next layout.
        drawPosY += layout.getDescent() + layout.getLeading();
    }

    graphics.dispose();
    return image;
}

From source file:QRCode.java

public static String createQRCode(String arg) {
    int size = 125;
    String fileType = "png";
    File myFile = null;/*from   w w  w  .  j a v  a  2 s  .co  m*/
    UUID uuid = UUID.nameUUIDFromBytes(arg.getBytes());

    try {
        myFile = File.createTempFile("temp-file-name", ".png");

        Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<EncodeHintType, ErrorCorrectionLevel>();
        hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix byteMatrix = qrCodeWriter.encode(uuid.toString(), BarcodeFormat.QR_CODE, size, size, hintMap);
        int CrunchifyWidth = byteMatrix.getWidth();
        BufferedImage image = new BufferedImage(CrunchifyWidth, CrunchifyWidth, BufferedImage.TYPE_INT_RGB);
        image.createGraphics();

        Graphics2D graphics = (Graphics2D) image.getGraphics();
        graphics.setColor(Color.WHITE);
        graphics.fillRect(0, 0, CrunchifyWidth, CrunchifyWidth);
        graphics.setColor(Color.BLACK);

        for (int i = 0; i < CrunchifyWidth; i++) {
            for (int j = 0; j < CrunchifyWidth; j++) {
                if (byteMatrix.get(i, j)) {
                    graphics.fillRect(i, j, 1, 1);
                }
            }
        }
        ImageIO.write(image, fileType, myFile);
        //System.out.println("\n\nYou have successfully created QR Code " + myFile.getCanonicalPath());
        return myFile.getCanonicalPath();
    } catch (WriterException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return null;
}

From source file:com.church.tools.ChartTools.java

/**
 * Generate pie chart.//from  www.ja  v a2  s.co  m
 * 
 * @param title the title
 * @param values the values
 * @param captions the captions
 * @param width the width
 * @param height the height
 * @param color the color
 * 
 * @return the buffered image
 */
public static BufferedImage GeneratePieChart(String title, double[] values, String[] captions, int width,
        int height, Color color) {
    BufferedImage bufferedImage = null;
    DefaultPieDataset pieDataset = new DefaultPieDataset();
    Hashtable<String, String> ht = new Hashtable<String, String>();
    for (int i = 0; i < values.length; i++)
        ht.put(captions[i], Double.toString(values[i]));

    Enumeration<String> enu = ht.keys();
    int i = 0;
    while (enu.hasMoreElements()) {
        String str = (String) enu.nextElement();
        pieDataset.setValue(str, new Double(Double.parseDouble((String) ht.get(str))));
        i++;
    }

    JFreeChart chart = ChartFactory.createPieChart(title, pieDataset, false, false, false);
    chart.setBackgroundPaint(color);
    bufferedImage = chart.createBufferedImage(width, height);
    return bufferedImage;
}

From source file:Main.java

/**
 * Create a Hash table from supplied Map, this is passed to Hessian encoder
 * to create Hessian encoded request body.
 * /*  w w w . j  a va2 s .  c  om*/
 * @param map The source map.
 * @return Hash table from supplied Map.
 */
protected static Hashtable<String, Object> createHashTable(Map<String, List<String>> map) {
    Hashtable<String, Object> hashtable = new Hashtable<String, Object>();

    Set<Map.Entry<String, List<String>>> set = map.entrySet();
    for (Map.Entry<String, List<String>> obj : set) {
        hashtable.put(obj.getKey(), new Vector<String>(obj.getValue()));
    }
    return hashtable;
}

From source file:Main.java

/**
 * Loads an index (Hashtable) from a file.
 * //from   w w w. j a va  2 s.  com
 * @param root_
 *            The file where the index is stored in.
 * @return The indextable.
 * @exception IOException
 *                If an internal error prevents the file from being read.
 */
public static Hashtable loadIndex(File root_, String name) throws IOException {
    File indexfile = new File(root_, name);
    Hashtable index = new Hashtable();
    if (indexfile.exists()) {
        LineNumberReader in = new LineNumberReader(new FileReader(indexfile));
        while (in.ready())
            index.put(in.readLine(), new Long(in.readLine()));
        in.close();
    }
    return index;
}

From source file:Main.java

public static Hashtable<Character, Integer> createHashtable(String text) {
    Hashtable<Character, Integer> textHashTable = new Hashtable<Character, Integer>();

    for (char c : text.toCharArray()) {
        if (textHashTable.get(c) != null) {
            Integer temp = textHashTable.get(c);
            textHashTable.put(c, temp + 1);
        } else {/*  w  ww  . ja  v  a2 s  . co m*/
            textHashTable.put(c, new Integer(1));
        }
    }
    return textHashTable;
}