Example usage for java.util HashMap entrySet

Introduction

In this page you can find the example usage for java.util HashMap entrySet.

Prototype

Set entrySet

To view the source code for java.util HashMap entrySet.

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Document

Holds cached entrySet().

Usage

From source file:Main.java

/**
 * HashMap Operations//from   w  w w  . ja v  a 2s  .  co  m
 * */
public static void printHash(HashMap<String, Integer> hashMap) {
    System.out.println("Print HashMap");
    Set<Map.Entry<String, Integer>> s = hashMap.entrySet();
    Iterator<Map.Entry<String, Integer>> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry<String, Integer> m = (Map.Entry<String, Integer>) it.next();
        System.out.println(m.getKey() + "\t" + m.getValue());
    }
}

From source file:Main.java

public static ArrayList<String> getHashMap(HashMap<String, String> hm) {
    ArrayList<String> a = new ArrayList<String>();
    Set<Map.Entry<String, String>> s = hm.entrySet();
    Iterator<Map.Entry<String, String>> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry<String, String> m = (Map.Entry<String, String>) it.next();
        a.add(m.getKey() + "\t" + m.getValue());
    }/*w w  w.  ja v  a  2 s.  c  om*/
    return a;
}

From source file:Main.java

public static ArrayList<String> getHashMap2(HashMap<String, Integer> hm) {
    ArrayList<String> a = new ArrayList<String>();
    Set<Map.Entry<String, Integer>> s = hm.entrySet();
    Iterator<Map.Entry<String, Integer>> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry<String, Integer> m = (Map.Entry<String, Integer>) it.next();
        a.add(m.getKey() + "\t" + m.getValue());
    }/*from w  w  w  . j a v  a 2s.  c o  m*/
    return a;
}

From source file:Main.java

public static void init(HashMap<Type, Object> typeAdapterHashMap) {
    GsonBuilder gsonBuilder = new GsonBuilder();

    for (Map.Entry<Type, Object> entry : typeAdapterHashMap.entrySet()) {
        gsonBuilder.registerTypeAdapter(entry.getKey(), entry.getValue());
    }//  w w w  .j ava  2 s  .  co m

    gson = gsonBuilder.create();
}

From source file:Main.java

public static double readHashTopValue(HashMap<String, Integer> scores, int k) {
    List<Map.Entry<String, Integer>> list = new LinkedList<Map.Entry<String, Integer>>(scores.entrySet());
    int count = 0;
    int value = 0;
    double res = 0;
    for (Iterator<Map.Entry<String, Integer>> it = list.iterator(); count < k && it.hasNext();) {
        Map.Entry<String, Integer> entry = (Map.Entry<String, Integer>) it.next();
        value = (Integer) entry.getValue();
        res += (double) value * Math.log(2) / Math.log(count + 2);
        // res += (Integer) entry.getValue();
        count++;/*from   www .j  a  v a  2s .c o  m*/
    }
    return res;
}

From source file:Main.java

public static void mergeParam(HashMap<String, Object> params, List<NameValuePair> valuePair) {
    if (params != null) {
        for (HashMap.Entry<String, Object> entry : params.entrySet()) {
            String key = entry.getKey();
            String value = String.valueOf(entry.getValue());
            valuePair.add(new BasicNameValuePair(key, value));
        }/*from  www  .j a  va  2  s  . com*/
    }
}

From source file:Main.java

public static void vectorToXML222(String xmlFile, String xpath, String parentNodeName, Vector<HashMap> vector) {
    File file = new File(xmlFile);
    try {//from   w ww  .  jav  a2 s .  c o m
        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();

        Document document;
        Element rootNode;
        if (file.exists()) {
            document = documentBuilder.parse(new File(xmlFile));
            rootNode = document.getDocumentElement();
        } else {
            document = documentBuilder.newDocument();
            rootNode = document.createElement(xpath);
            document.appendChild(rootNode);
        }

        for (int x = 0; x < vector.size(); x++) {
            Element parentNode = document.createElement(parentNodeName);
            rootNode.appendChild(parentNode);
            HashMap hashmap = vector.get(x);
            Set set = hashmap.entrySet();
            Iterator i = set.iterator();

            while (i.hasNext()) {
                Map.Entry me = (Map.Entry) i.next();
                // System.out.println("key=" +
                // me.getKey().toString());
                Element em = document.createElement(me.getKey().toString());
                em.appendChild(document.createTextNode(me.getValue().toString()));
                parentNode.appendChild(em);
                // System.out.println("write " +
                // me.getKey().toString() +
                // "="
                // + me.getValue().toString());
            }
        }

        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        DOMSource source = new DOMSource(document);
        FileOutputStream fo = new FileOutputStream(xmlFile);
        StreamResult result = new StreamResult(fo);
        transformer.transform(source, result);
    } catch (Exception ex) {
        file.delete();
        ex.printStackTrace();
    }
}

From source file:Main.java

@SuppressWarnings("unchecked")
public static HashMap<?, ?> sortByValue(HashMap<?, ?> map, final int flag) {
    // flag = 0 decreasing order otherwise increasing
    List list = new LinkedList(map.entrySet());
    Collections.sort(list, new Comparator() {
        public int compare(Object o1, Object o2) {
            if (flag == 0)
                return ((Comparable) ((Map.Entry) (o2)).getValue()).compareTo(((Map.Entry) (o1)).getValue());
            else/*from   w  w w  .  ja v a  2 s  .  c om*/
                return ((Comparable) ((Map.Entry) (o1)).getValue()).compareTo(((Map.Entry) (o2)).getValue());
        }
    });

    HashMap result = new LinkedHashMap();
    for (Iterator it = list.iterator(); it.hasNext();) {
        Map.Entry entry = (Map.Entry) it.next();
        result.put(entry.getKey(), entry.getValue());
    }
    return result;
}

From source file:Main.java

public static final String mapToQueryString(HashMap<String, String> queryString) {
    StringBuilder sb = new StringBuilder();
    try {// ww  w. jav  a 2  s .  co m
        for (HashMap.Entry<String, String> e : queryString.entrySet()) {
            if (sb.length() > 0) {
                sb.append('&');
            }
            sb.append(URLEncoder.encode(e.getKey(), "UTF-8")).append('=')
                    .append(URLEncoder.encode(e.getValue(), "UTF-8"));
        }
    } catch (UnsupportedEncodingException e1) {
        e1.printStackTrace();
    }
    return sb.toString();
}

From source file:frequencyassignment.charts.Charts.java

public static void displayScatterPlot(String name, HashMap<Double, Double> values) {
    XYSeries xyData = new XYSeries(name);
    for (Map.Entry<Double, Double> entry : values.entrySet()) {
        xyData.add(entry.getKey(), entry.getValue());
    }//from  www .  j a  v  a  2 s .co m
    XYSeriesCollection xySeriesCollection = new XYSeriesCollection(xyData);
    JFreeChart chart = ChartFactory.createScatterPlot(name, "X", "Y", (XYDataset) xySeriesCollection);
    ChartFrame frame = new ChartFrame(name, chart);
    frame.pack();
    frame.setVisible(true);
}