Example usage for java.util Collection contains

Introduction

In this page you can find the example usage for java.util Collection contains.

Prototype

boolean contains(Object o);

Source Link

Document

Returns true if this collection contains the specified element.

Usage

From source file:apm.common.utils.Collections3.java

/**
 * abList.//from  w  w w.j  av a 2  s. c  o m
 */
public static <T> List<T> intersection(Collection<T> a, Collection<T> b) {
    List<T> list = new ArrayList<T>();

    for (T element : a) {
        if (b.contains(element)) {
            list.add(element);
        }
    }
    return list;
}

From source file:com.logsniffer.web.tags.JstlFunctionsLibrary.java

/**
 * Returns true if value is contained in given collection.
 * //w  ww .j  a  v a  2s  . co m
 * @param collection
 * @param value
 * @return true if value is contained in given collection
 */
public static boolean contains(final Collection<Object> list, final Object value) {
    return list != null && value != null && list.contains(value);
}

From source file:Main.java

/**
 * Returns <code>true</code> iff some element of <i>a</i> is also an element
 * of <i>b</i> (or, equivalently, if some element of <i>b</i> is also an
 * element of <i>a</i>). In other words, this method returns
 * <code>true</code> iff the {@link #intersection} of <i>a</i> and <i>b</i>
 * is not empty./*w ww  . j  av a2s. c  om*/
 * 
 * @since 2.1
 * @param a
 *            a non-<code>null</code> Collection
 * @param b
 *            a non-<code>null</code> Collection
 * @return <code>true</code> iff the intersection of <i>a</i> and <i>b</i>
 *         is non-empty
 * @see #intersection
 */
public static boolean containsAny(final Collection a, final Collection b) {
    // TO DO: we may be able to optimize this by ensuring either a or b
    // is the larger of the two Collections, but I'm not sure which.
    for (Iterator iter = a.iterator(); iter.hasNext();) {
        if (b.contains(iter.next())) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

/**
 * Return {@code true} if any element in '{@code candidates}' is contained in
 * '{@code source}', otherwise returns {@code false}.
 * //  ww  w .j a  va  2  s . c  om
 * @param source
 *           the source Collection.
 * @param candidates
 *           the candidates to search for.
 * @return whether any of the candidates has been found.
 */
public static boolean containsAny(Collection<?> source, Object... candidates) {
    if (source == null || source.isEmpty() || candidates == null || candidates.length == 0) {
        return false;
    }
    for (Object candidate : candidates) {
        if (source.contains(candidate)) {
            return true;
        }
    }
    return false;
}

From source file:byps.http.HActiveMessage.java

private static ArrayList<Long> evalM1AndM2(Collection<Long> m1, Collection<Long> m2) {
    ArrayList<Long> arr = new ArrayList<Long>();
    for (Long streamId : m1) {
        if (m2.contains(streamId))
            arr.add(streamId);//from  w  w w.  j  ava2 s. c  om
    }
    return arr;
}

From source file:com.parse.ParseJSONUtils.java

/**
 * Creates a copy of {@code copyFrom}, excluding the keys from {@code excludes}.
 *//*from w  w w .  j  av a2s.c o m*/
public static JSONObject create(JSONObject copyFrom, Collection<String> excludes) {
    JSONObject json = new JSONObject();
    Iterator<String> iterator = copyFrom.keys();
    while (iterator.hasNext()) {
        String name = iterator.next();
        if (excludes.contains(name)) {
            continue;
        }
        try {
            json.put(name, copyFrom.opt(name));
        } catch (JSONException e) {
            // This shouldn't ever happen since it'll only throw if `name` is null
            throw new RuntimeException(e);
        }
    }
    return json;
}

From source file:Main.java

/**
 * Return the first element in '{@code candidates}' that is contained in
 * '{@code source}'. If no element in '{@code candidates}' is present in
 * '{@code source}' returns {@code null}. Iteration order is
 * {@link Collection} implementation specific.
 *
 * @param source     the source Collection
 * @param candidates the candidates to search for
 * @return the first present object, or {@code null} if not found
 *//*w  w w. j a  va  2 s  .c  o  m*/
@SuppressWarnings("unchecked")
public static <E> E findFirstMatch(Collection<?> source, Collection<E> candidates) {
    if (isEmpty(source) || isEmpty(candidates)) {
        return null;
    }
    for (Object candidate : candidates) {
        if (source.contains(candidate)) {
            return (E) candidate;
        }
    }
    return null;
}

From source file:$.Collections3.java

/**
     * abList.//from   ww w  .ja v a2s . co m
     */
    public static <T> List<T> intersection(Collection<T> a, Collection<T> b) {
        List<T> list = new ArrayList<T>();

        for (T element : a) {
            if (b.contains(element)) {
                list.add(element);
            }
        }
        return list;
    }

From source file:Main.java

/**
 * Return {@code true} if any element in '{@code candidates}' is
 * contained in '{@code source}'; otherwise returns {@code false}.
 *
 * @param source     the source Collection
 * @param candidates the candidates to search for
 * @return whether any of the candidates has been found
 *//* w w w. j  a  va 2  s.c o m*/
public static boolean containsAny(Collection<?> source, Collection<?> candidates) {
    if (isEmpty(source) || isEmpty(candidates)) {
        return false;
    }
    for (Object candidate : candidates) {
        if (source.contains(candidate)) {
            return true;
        }
    }
    return false;
}

From source file:org.hdiv.web.servlet.tags.form.SelectedValueComparatorHDIV.java

private static boolean collectionCompare(Collection boundCollection, Object candidateValue,
        BindStatus bindStatus) {//  w  w w.  jav a 2 s. c  o m
    try {
        if (boundCollection.contains(candidateValue)) {
            return true;
        }
    } catch (ClassCastException ex) {
        // Probably from a TreeSet - ignore.
    }
    return exhaustiveCollectionCompare(boundCollection, candidateValue, bindStatus);
}