Example usage for java.util ArrayList toArray

Introduction

In this page you can find the example usage for java.util ArrayList toArray.

Prototype

@SuppressWarnings("unchecked")
public <T> T[] toArray(T[] a)

Source Link

Document

Returns an array containing all of the elements in this list in proper sequence (from first to last element); the runtime type of the returned array is that of the specified array.

Usage

From source file:Main.java

@SuppressWarnings("unchecked")
public static <E> E[] toArray(Collection<?> collection, Class<E> elementType, boolean sort) {
    if (collection == null || collection.isEmpty())
        return null;
    ArrayList arraylist = new ArrayList(collection);
    if (sort) {/*from  ww  w  .  j  a v a2 s  .com*/
        Collections.sort(arraylist);
    }

    E[] array = (E[]) Array.newInstance(elementType, arraylist.size());
    arraylist.toArray(array);
    return array;
}

From source file:filterviewplugin.FilterViewSettings.java

private static ProgramFilter[] getAvailableFilters() {
    ProgramFilter[] allFilters = Plugin.getPluginManager().getFilterManager().getAvailableFilters().clone();
    Arrays.sort(allFilters, new Comparator<ProgramFilter>() {

        public int compare(ProgramFilter f1, ProgramFilter f2) {
            return f1.getName().compareToIgnoreCase(f2.getName());
        }/*from w w  w  .  j av  a  2 s. c o  m*/
    });
    ArrayList<ProgramFilter> filters = new ArrayList<ProgramFilter>(Arrays.asList(allFilters));
    filters.remove(Plugin.getPluginManager().getFilterManager().getAllFilter());
    return filters.toArray(new ProgramFilter[filters.size()]);
}

From source file:com.lucidtechnics.blackboard.util.Utility.java

public static Class[] getAllTypes(Class _class) {
    ArrayList allTypesList = new ArrayList();
    ArrayList searchDomainList = new ArrayList();
    searchDomainList.add(_class);
    allTypesList.add(_class);

    allTypesList = getAllTypes(searchDomainList, allTypesList);

    return (Class[]) allTypesList.toArray(new Class[allTypesList.size()]);
}

From source file:Main.java

/**
 * Change the type of array of Objects to an array of objects of type
 * newClass./*from w  w  w  .  j  a  v  a  2 s  . c  o  m*/
 * 
 */
@SuppressWarnings("unchecked")
public static <T> T[] changeArrayType(Object[] array, Class<T> newClass) {

    ArrayList<T> newArray = new ArrayList<T>();

    for (int i = 0; i < array.length; i++) {
        // Only add those objects that can be cast to the new class
        if (newClass.isInstance(array[i])) {
            newArray.add(newClass.cast(array[i]));
        }
    }

    return newArray.toArray((T[]) Array.newInstance(newClass, 0));
}

From source file:ReflectUtils.java

/**
 * Scans all classes accessible from the context class loader which belong to the given package and subpackages.
 *
 * @param packageName The base package//from w w w .  j av  a  2s.  c o m
 * @return The classes
 * @throws ClassNotFoundException
 * @throws IOException
 */
private static Class[] getClasses(String packageName) throws ClassNotFoundException, IOException {
    //        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
    ClassLoader classLoader = ClassLoader.getSystemClassLoader();
    assert classLoader != null;
    String path = packageName.replace('.', '/');
    Enumeration<URL> resources = classLoader.getResources(path);
    List<File> dirs = new ArrayList<File>();
    while (resources.hasMoreElements()) {
        URL resource = resources.nextElement();
        dirs.add(new File(resource.getFile()));
    }
    ArrayList<Class> classes = new ArrayList<Class>();
    for (File directory : dirs) {
        classes.addAll(findClasses(directory, packageName));
    }
    return classes.toArray(new Class[classes.size()]);
}

From source file:com.milaboratory.core.io.sequence.fastq.RandomAccessFastqReaderTest.java

private static SingleRead[] allReads(File sample) throws IOException {
    ArrayList<SingleRead> reads = new ArrayList<>();
    SingleFastqReader reader = new SingleFastqReader(sample);
    SingleRead read;//from w  w w  . j a va 2s .  c  om
    while ((read = reader.take()) != null)
        reads.add(read);
    return reads.toArray(new SingleRead[reads.size()]);
}

From source file:com.feedzai.fos.server.remote.impl.RemoteInterfacesTest.java

/**
 * Scans all classes accessible from the context class loader which belong to the given package and subpackages.
 *
 * @param packageName The base package// w w w  .j av a 2 s  .c o m
 * @return The classes
 * @throws ClassNotFoundException
 * @throws java.io.IOException
 */
private static Class[] getClasses(String packageName) throws ClassNotFoundException, IOException {
    ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
    assert classLoader != null;
    String path = packageName.replace('.', '/');
    Enumeration<URL> resources = classLoader.getResources(path);
    List<File> dirs = new ArrayList<>();
    while (resources.hasMoreElements()) {
        URL resource = resources.nextElement();
        dirs.add(new File(resource.getFile()));
    }
    ArrayList<Class> classes = new ArrayList<>();
    for (File directory : dirs) {
        classes.addAll(findClasses(directory, packageName));
    }
    return classes.toArray(new Class[classes.size()]);
}

From source file:Main.java

@SuppressWarnings("unchecked")
public static <E> E[] toArray(Enumeration<E> enumeration, Class<E> type) {
    ArrayList<E> elements = new ArrayList<E>();
    while (enumeration.hasMoreElements()) {
        elements.add(enumeration.nextElement());
    }/*from w  w w . j a v a  2  s  .co m*/
    E[] array = (E[]) Array.newInstance(type, elements.size());
    elements.toArray(array);
    return array;
}

From source file:Main.java

public static Element[] getChildren(Element parent, String name) {
    ArrayList<Element> al = new ArrayList<Element>();
    NodeList nl = parent.getChildNodes();
    for (int i = 0; i < nl.getLength(); i++) {
        Node n = nl.item(i);//from   w  w  w . j  a  v  a2s  .  co m
        if (n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().equals(name)) {
            al.add((Element) n);
        }
    }
    return al.toArray(new Element[al.size()]);
}

From source file:Main.java

/**
 * returns an arrayList of codes that correspond to the array positions with
 * true values//w  w  w . jav a2s .co  m
 * 
 * @return
 */
public static String[] getSelectedCodes(Context context, boolean[] selectedItems, int codeResourceId) {
    ArrayList<String> codes = new ArrayList<String>();
    Resources res = context.getResources();
    String[] allCodes = res.getStringArray(codeResourceId);
    for (int i = 0; i < selectedItems.length; i++) {
        if (selectedItems[i]) {
            codes.add(allCodes[i]);
        }
    }
    return codes.toArray(new String[codes.size()]);
}