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:Main.java

/**
 * add a unique value to a collection. If the value already exists, it will
 * return <code>false</code>.
 * //from  w w w .  ja v a2 s. c o m
 * @param collection
 *            the collection.
 * @param value
 *            the value.
 * @return boolean.
 * @since 0.1
 */
public static boolean addUnique(final Collection collection, final Object value) {
    if (collection.contains(value)) {
        return false;
    }
    return collection.add(value);
}

From source file:Main.java

/**
 * Checks whether the given source collection contains any of the items in the find {@link Collection}.
 * //from ww w .  j  a v a 2s  . c o m
 * @param source
 * @param find
 * @return
 */
public static <T> boolean containsAny(Collection<T> source, Collection<T> find) {
    for (T tofind : find) {
        if (source.contains(tofind)) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

public static <T> boolean isNullOrContainsNot(final Collection<?> collection, final T item) {
    return ((collection == null) && (!collection.contains(item)));
}

From source file:Main.java

public static <T> void uniqAdd(Collection<T> collection, T elements) {
    if (collection == null)
        return;//from w  ww .  j a  v a 2s  . c om
    if (!collection.contains(elements))
        collection.add(elements);
}

From source file:Main.java

public static <K> Set<K> intersect(Collection<K> a, Collection<K> b) {
    Set<K> ret = new HashSet<K>();
    for (K v : a) {
        if (b.contains(v))
            ret.add(v);//  w  w  w .j  a v  a  2s.  co m
    }
    return ret;
}

From source file:Main.java

@SuppressWarnings("unchecked")
private static <T> void addAllOfExclude(Container container, Class<T> clazz, List<T> all,
        Collection<? extends Component> exclude) {
    if (exclude.contains(container)) {
        return;//from   w w  w.j  a  v  a2 s  . c o m
    }
    if (container.getClass().equals(clazz)) {
        all.add((T) container);
    }
    int count = container.getComponentCount();
    for (int i = 0; i < count; i++) {
        Component component = container.getComponent(i);
        if (exclude.contains(component)) {
            continue;
        }
        if (component instanceof Container) {
            addAllOfExclude((Container) component, clazz, all, exclude); // Recursive
        } else if (component.getClass().equals(clazz)) {
            all.add((T) component);
        }
    }
}

From source file:edu.wisc.web.util.JstlUtil.java

public static boolean contains(Collection<?> coll, Object o) {
    return coll.contains(o);
}

From source file:Main.java

/**
 * if any item in toCheck is present in collection
 *
 * @param collection//from  ww w . j a v a 2s .  com
 * @param toCheck
 */
public static <T> boolean containsAny(Collection<T> collection, Collection<T> toCheck) {
    for (T c : toCheck) {
        if (collection.contains(c))
            return true;
    }
    return false;

}

From source file:Main.java

public static <T> boolean containsNone(Collection<T> outer, Iterable<T> inner) {
    for (T item : inner) {
        if (outer.contains(item)) {
            return false;
        }//w w  w. jav a2 s . c o m
    }
    return true;
}

From source file:Main.java

public static <T> boolean containsAny(Collection<T> outer, Iterable<T> inner) {
    for (T item : inner) {
        if (outer.contains(item)) {
            return true;
        }/* w  w  w .j  av  a2  s .  c  o m*/
    }
    return false;
}