Example usage for java.util Collections addAll

Introduction

In this page you can find the example usage for java.util Collections addAll.

Prototype

@SafeVarargs
public static <T> boolean addAll(Collection<? super T> c, T... elements)

Source Link

Document

Adds all of the specified elements to the specified collection.

Usage

From source file:Main.java

@SafeVarargs
public static <T> Set<T> set(T... items) {
    HashSet<T> result = new HashSet<>(items.length);
    Collections.addAll(result, items);
    return result;
}

From source file:Main.java

/**
 * This method works like {@link Arrays#asList(Object[])}, but returns an instance of
 * {@link Set} instead of a list/*from w  w w .j a va 2  s. co m*/
 * @param array    the input array
 * @param <T>      the type of input items
 * @return the resulting set
 */
public static <T> Set<T> asSet(T... array) {
    final HashSet<T> set = new HashSet<T>();
    Collections.addAll(set, array);
    return set;
}

From source file:Main.java

/**
 * Returns data converted into list.//from w w w. j  ava 2  s. c  o m
 *
 * @param data data
 * @param <T>  data type
 * @return data list
 */
public static <T> ArrayList<T> asList(final T... data) {
    final ArrayList<T> list = new ArrayList<T>(data.length);
    Collections.addAll(list, data);
    return list;
}

From source file:Main.java

@SuppressWarnings({ "unchecked" })
public static <E> Set<E> asSet(E... elements) {
    if (elements == null || elements.length == 0) {
        return Collections.EMPTY_SET;
    }//from w  ww .  j a  v  a2s  .  com
    LinkedHashSet<E> set = new LinkedHashSet<E>(elements.length * 4 / 3 + 1);
    Collections.addAll(set, elements);
    return set;
}

From source file:cloudify.widget.common.CollectionUtils.java

public static <T extends Collection> T addTo(Collection l, Object... os) {
    Collections.addAll(l, os);
    return (T) l;
}

From source file:Main.java

/**
 * Merge arrays//w w  w .j  ava2 s . c o  m
 *
 * @param array The source arrays
 * @return A collection that contains the contents of all the arrays passed to <code>array</code>
 */
public static <T> ArrayList<T> mergeLists(final T... array) {
    final ArrayList<T> retValue = new ArrayList<T>();
    Collections.addAll(retValue, array);
    return retValue;
}

From source file:Main.java

/**
 * @deprecated Replace with Collections.addAll
 * Populates collection with items//  www .  j  av a 2s  .c  om
 * @param <T>
 * @param collection
 * @param items 
 * @see java.util.Collections#addAll(java.util.Collection, java.lang.Object...) 
 */
public static final <T> void populate(Collection<T> collection, T... items) {
    Collections.addAll(collection, items);
}

From source file:ClassUtil.java

/**
 * Retrieving fields list of specified class
 * If recursively is true, retrieving fields from all class hierarchy
 *
 * @param clazz where fields are searching
 * @param recursively param/*from w  w  w  . j  a  v  a2  s .c om*/
 * @return list of fields
 */
public static Field[] getDeclaredFields(Class clazz, boolean recursively) {
    List<Field> fields = new LinkedList<Field>();
    Field[] declaredFields = clazz.getDeclaredFields();
    Collections.addAll(fields, declaredFields);

    Class superClass = clazz.getSuperclass();

    if (superClass != null && recursively) {
        Field[] declaredFieldsOfSuper = getDeclaredFields(superClass, recursively);
        if (declaredFieldsOfSuper.length > 0)
            Collections.addAll(fields, declaredFieldsOfSuper);
    }

    return fields.toArray(new Field[fields.size()]);
}

From source file:Main.java

/**
 * Returns a list of objects converted from array.
 *
 * @param array//from ww  w.  ja  v a  2  s .  co m
 *            data array
 * @param <T>
 *            data type
 * @return data list
 */
public static <T> ArrayList<T> toList(final T[] array) {
    final ArrayList<T> list = new ArrayList<T>(array.length);
    Collections.addAll(list, array);
    return list;
}

From source file:Main.java

@SuppressWarnings({ "unchecked" })
public static <E> List<E> asList(E... elements) {
    if (elements == null || elements.length == 0) {
        return Collections.EMPTY_LIST;
    }//from  w  w  w.  j  a va2  s  .  c om
    // Avoid integer overflow when a large array is passed in
    int capacity = computeListCapacity(elements.length);
    ArrayList<E> list = new ArrayList<E>(capacity);
    Collections.addAll(list, elements);
    return list;
}