Example usage for java.util HashSet remove

Introduction

In this page you can find the example usage for java.util HashSet remove.

Prototype

public boolean remove(Object o)

Source Link

Document

Removes the specified element from this set if it is present.

Usage

From source file:Main.java

public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();

    hSet.add(new Integer("1"));
    hSet.add(new Integer("2"));
    hSet.add(new Integer("3"));

    System.out.println(hSet);/*from   ww w . ja  v a 2s .  c  o  m*/

    boolean blnRemoved = hSet.remove(new Integer("2"));

    System.out.println(blnRemoved);

    System.out.println(hSet);

}

From source file:Main.java

public static void main(String args[]) {
    HashSet<String> newset = new HashSet<String>();

    newset.add("Learning");
    newset.add("from");
    newset.add("java2s.com");

    System.out.println("Values before remove: " + newset);

    // remove "Easy" from set
    boolean isremoved = newset.remove("from");

    System.out.println("Return value after remove: " + isremoved);

    System.out.println("Values after remove: " + newset);
}

From source file:Main.java

public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();
    System.out.println("Size of HashSet : " + hSet.size());

    hSet.add(new Integer("1"));
    hSet.add(new Integer("2"));
    hSet.add(new Integer("3"));

    System.out.println(hSet.size());

    hSet.remove(new Integer("1"));
    System.out.println(hSet.size());
}

From source file:nl.systemsgenetics.genenetworkbackend.div.CreateCgdMatrix.java

/**
 * @param args the command line arguments
 * @throws java.io.FileNotFoundException
 *//*w ww  .  ja  va2s.c o m*/
public static void main(String[] args) throws FileNotFoundException, IOException {

    final File cgdFile = new File("C:\\UMCG\\Genetica\\Projects\\GeneNetwork\\CGD.txt");
    final File cgdMatrixFile = new File("C:\\UMCG\\Genetica\\Projects\\GeneNetwork\\CGD_matrix.txt");

    final CSVParser parser = new CSVParserBuilder().withSeparator('\t').withIgnoreQuotations(true).build();
    final CSVReader reader = new CSVReaderBuilder(new BufferedReader(new FileReader(cgdFile))).withSkipLines(1)
            .withCSVParser(parser).build();

    HashSet<String> cgdInfo = new HashSet<>(30);
    cgdInfo.add("AD");
    cgdInfo.add("AD");
    cgdInfo.add("XL");
    cgdInfo.add("Pediatric");

    HashMap<String, HashSet<String>> geneInfoMap = new HashMap<>();

    String[] nextLine;
    while ((nextLine = reader.readNext()) != null) {

        HashSet<String> geneInfo = new HashSet<>();
        geneInfoMap.put(nextLine[0], geneInfo);

        String diseaseManifistationField = nextLine[7];
        String[] diseaseManifistations = StringUtils.split(diseaseManifistationField, ';');

        geneInfo.add(nextLine[4].trim());
        geneInfo.add(nextLine[5].trim());

        for (int i = 0; i < diseaseManifistations.length; ++i) {

            diseaseManifistations[i] = diseaseManifistations[i].trim();
            cgdInfo.add(diseaseManifistations[i]);
            geneInfo.add(diseaseManifistations[i]);

        }

    }

    cgdInfo.remove("General");

    DoubleMatrixDataset<String, String> cgdInfoTable = new DoubleMatrixDataset<>(geneInfoMap.keySet(), cgdInfo);

    for (Map.Entry<String, HashSet<String>> geneInfoEntry : geneInfoMap.entrySet()) {

        String gene = geneInfoEntry.getKey();
        HashSet<String> geneInfo = geneInfoEntry.getValue();

        for (String geneProperty : geneInfo) {

            if (cgdInfoTable.containsCol(geneProperty)) {
                cgdInfoTable.setElement(gene, geneProperty, 1);
            }

        }

    }

    cgdInfoTable.save(cgdMatrixFile);

}

From source file:Main.java

/**
 * Null safe creation of a {@link HashSet} out of a given collection without <code>null</code> elements. The returned
 * {@link HashSet} is modifiable and never null.
 *
 * @param c/*  w  ww  .java  2s.c  o  m*/
 * @return an {@link HashSet} containing the given collection's elements without <code>null</code> elements. Never
 *         null.
 */
public static <T> HashSet<T> hashSetWithoutNullElements(Collection<? extends T> c) {
    HashSet<T> set = hashSet(c);
    set.remove(null);
    return set;
}

From source file:Main.java

public static <T> List<T> updateList(List<T> toBeUpdated, HashSet<T> updates) {
    HashSet<T> toBeUpdatedHashSet = new HashSet<T>(toBeUpdated);
    for (T id : updates) {
        if (toBeUpdatedHashSet.contains(id)) {
            toBeUpdatedHashSet.remove(id);
        } else {//from   w  w w. ja  v a  2  s  .  co  m
            toBeUpdatedHashSet.add(id);
        }
    }

    return new ArrayList<T>(toBeUpdatedHashSet);
}

From source file:fr.simon.marquis.secretcodes.util.Utils.java

public static boolean addSecretCode(Context ctx, SecretCode value) {
    HashSet<SecretCode> secretCodes = new HashSet<SecretCode>(getSecretCodes(ctx));
    boolean exist = secretCodes.contains(value);
    if (exist) {//from  w ww  .j  a v a  2 s .c om
        secretCodes.remove(value);
    }
    secretCodes.add(value);
    saveSecretCodes(ctx, new ArrayList<SecretCode>(secretCodes));
    return !exist;
}

From source file:com.jetyun.pgcd.rpc.localarg.LocalArgController.java

/**
 * Unregisters a LocalArgResolver</b>.
 * //from ww w  . j  a  v a2s. c  o  m
 * @param argClazz
 *            The previously registered local class
 * @param argResolver
 *            The previously registered LocalArgResolver object
 * @param contextInterface
 *            The previously registered transport Context interface.
 */
public static void unregisterLocalArgResolver(Class argClazz, Class contextInterface,
        LocalArgResolver argResolver) {
    synchronized (localArgResolverMap) {
        HashSet resolverSet = (HashSet) localArgResolverMap.get(argClazz);
        if (resolverSet == null
                || !resolverSet.remove(new LocalArgResolverData(argResolver, argClazz, contextInterface))) {
            log.warn("local arg resolver " + argResolver.getClass().getName()
                    + " not registered for local class " + argClazz.getName() + " with context "
                    + contextInterface.getName());
            return;
        }
        if (resolverSet.isEmpty()) {
            localArgResolverMap.remove(argClazz);
        }
    }
    log.info("unregistered local arg resolver " + argResolver.getClass().getName() + " for local class "
            + argClazz.getName() + " with context " + contextInterface.getName());
}

From source file:pt.webdetails.cda.test.util.CdaTestHelper.java

@SafeVarargs
public static <T> boolean columnContains(TableModel table, int colIdx, T... values) {
    HashSet<T> set = new HashSet<T>();
    set.addAll(Arrays.asList(values));
    for (int i = 0; i < table.getRowCount(); i++) {
        set.remove(table.getValueAt(i, colIdx));
        if (set.isEmpty()) {
            return true;
        }/*from www.jav a  2 s.c  o  m*/
    }
    return false;
}

From source file:com.googlecode.eyesfree.brailleback.FocusFinder.java

public static AccessibilityNodeInfoCompat findLastFocusableDescendant(AccessibilityNodeInfoCompat root,
        Context context) {//from   www .jav a2  s .  c om
    // null guard and shortcut for leaf nodes.
    if (root == null || root.getChildCount() <= 0) {
        return null;
    }
    HashSet<AccessibilityNodeInfoCompat> seenNodes = new HashSet<AccessibilityNodeInfoCompat>();
    seenNodes.add(root);
    try {
        return findLastFocusableDescendantInternal(root, context, seenNodes);
    } finally {
        seenNodes.remove(root); // Not owned by us.
        AccessibilityNodeInfoUtils.recycleNodes(seenNodes);
    }
}