Example usage for java.util Collection size

Introduction

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

Prototype

int size();

Source Link

Document

Returns the number of elements in this collection.

Usage

From source file:Main.java

@SuppressWarnings({ "rawtypes" })
private static Object toByteArray(Collection collection) {
    byte[] ba = new byte[collection.size()];

    int i = 0;/*from ww w .j  ava2  s  .  c  om*/
    for (Object o : collection) {
        byte b = ((Byte) o).byteValue();
        ba[i++] = b;
    }

    return ba;
}

From source file:Main.java

@SuppressWarnings({ "rawtypes" })
private static Object toLongArray(Collection collection) {
    long[] la = new long[collection.size()];

    int i = 0;/*w w  w.  j  av a2s .co m*/
    for (Object o : collection) {
        long l = ((Long) o).longValue();
        la[i++] = l;
    }

    return la;
}

From source file:Main.java

@SuppressWarnings({ "rawtypes" })
private static Object toCharacterArray(Collection collection) {
    char[] ca = new char[collection.size()];

    int i = 0;/*from  w w  w  . j av a 2 s .co  m*/
    for (Object o : collection) {
        char c = ((Character) o).charValue();
        ca[i++] = c;
    }

    return ca;
}

From source file:Main.java

public static boolean hasAtLeastOneNotNullElement(Collection<?> collection) {
    if (collection == null)
        return false;
    if (collection.isEmpty())
        return false;
    if (collection.contains(null))
        return collection.size() > 1;
    return collection.size() > 0;
}

From source file:com.qwazr.utils.ArrayUtils.java

public static String[] toArray(Collection<String> collection) {
    if (collection == null)
        return null;
    String[] array = new String[collection.size()];
    int i = 0;/* w w w . ja  v  a2  s  .  c  om*/
    for (String val : collection)
        array[i++] = val;
    return array;
}

From source file:com.qwazr.utils.ArrayUtils.java

public static String[] toStringArray(Collection<Object> collection) {
    if (collection == null)
        return null;
    String[] array = new String[collection.size()];
    int i = 0;/*from w  ww .ja  v a  2 s .  c  o  m*/
    for (Object val : collection)
        array[i++] = val == null ? null : val.toString();
    return array;
}

From source file:Main.java

/**
 * Returns true if there is any element that is common to both collections.
 *///from   www . j  a  va  2  s  .c  om
public static boolean containsAny(Collection c1, Collection c2) {
    // A better implementation here would be to use sets
    Collection smallCollection;
    Collection largeCollection;
    if (c1.size() < c2.size()) {
        smallCollection = c1;
        largeCollection = c2;
    } else {
        smallCollection = c2;
        largeCollection = c1;
    }
    boolean intersect = false;
    Iterator i = smallCollection.iterator();
    while (i.hasNext()) {
        if (largeCollection.contains(i.next())) {
            intersect = true;
            break;
        }
    }
    return intersect;
}

From source file:com.enonic.cms.core.content.ContentVersionKey.java

public static List<ContentVersionKey> createList(Collection<ContentVersionEntity> versions) {
    List<ContentVersionKey> list = new ArrayList<ContentVersionKey>();
    if (versions == null || versions.size() == 0) {
        return list;
    }/*from   ww  w  .  j a v a  2s  .  co m*/

    for (ContentVersionEntity version : versions) {
        list.add(version.getKey());
    }

    return list;
}

From source file:eu.planets_project.tb.impl.serialization.ExperimentRecords.java

/**
 * /* w  w  w  . ja  v a 2 s .co  m*/
 * @param out
 * @param ecol
 */
public static void writeExperimentsToOutputStream(OutputStream out, Collection<Experiment> ecol) {
    writeExperimentsToOutputStream(out, ecol.toArray(new Experiment[ecol.size()]));
}

From source file:Main.java

@SuppressWarnings({ "rawtypes" })
private static Object toShortArray(Collection collection) {
    short[] sa = new short[collection.size()];

    int i = 0;//w ww.ja  v a  2 s.  c o m
    for (Object o : collection) {
        short s = ((Short) o).shortValue();
        sa[i++] = s;
    }

    return sa;
}