Example usage for java.lang.reflect Array newInstance

Introduction

In this page you can find the example usage for java.lang.reflect Array newInstance.

Prototype

public static Object newInstance(Class<?> componentType, int... dimensions)
        throws IllegalArgumentException, NegativeArraySizeException 

Source Link

Document

Creates a new array with the specified component type and dimensions.

Usage

From source file:com.skyisland.questmanager.fanciful.ArrayWrapper.java

/**
 * Converts an iterable element collection to an array of elements.
 * The iteration order of the specified object will be used as the array element order.
 * @param list The iterable of objects which will be converted to an array.
 * @param c The type of the elements of the array.
 * @return An array of elements in the specified iterable.
 *///  w ww  .  ja  va  2  s  . c om
@SuppressWarnings("unchecked")
public static <T> T[] toArray(Iterable<? extends T> list, Class<T> c) {
    int size = -1;
    if (list instanceof Collection<?>) {
        @SuppressWarnings("rawtypes")
        Collection coll = (Collection) list;
        size = coll.size();
    }

    if (size < 0) {
        size = 0;
        // Ugly hack: Count it ourselves
        for (@SuppressWarnings("unused")
        T element : list) {
            size++;
        }
    }

    T[] result = (T[]) Array.newInstance(c, size);
    int i = 0;
    for (T element : list) { // Assumes iteration order is consistent
        result[i++] = element; // Assign array element at index THEN increment counter
    }
    return result;
}

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From source file:net.navasoft.madcoin.backend.services.controller.exception.impl.BusinessControllerException.java

/**
 * Instantiates a new session/*from   w w w  .j  a  v a 2  s  .  c o m*/
 * net.navasoft.madcoin.backend.model.controller.impl exception.
 * 
 * @param exceptionMessages
 *            the exception messages
 * @param injected
 *            the injected
 * @param key
 *            the key
 * @param parameters
 *            the parameters
 * @since 28/07/2014, 11:34:20 PM
 */
public BusinessControllerException(final MessageSource exceptionMessages, final Locale injected,
        final AllowedExceptionMessage key, Object... parameters) {
    super(exceptionMessages.getMessage(key.getPropertyKey(), literal(parameters), injected));
    locatedMessage = key.getPropertyKey();
    language = injected;
    if (parameters != null) {
        reasonsToFail = (Object[]) Array.newInstance(Object.class, 0);
        for (Object param : parameters) {
            reasonsToFail = ArrayUtils.add(reasonsToFail, param);
        }
    }
}

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From source file:com.iterranux.droolsjbpmCore.internal.AbstractGenericFactory.java

/**
 * Get the underlying class for a type, or null if the type is a variable type.
 * @param type the type//  w  ww.  j  a  v  a  2  s . c  om
 * @return the underlying class
 */
public static Class<?> getClass(Type type) {

    if (type instanceof Class) {
        return (Class) type;
    } else if (type instanceof ParameterizedType) {
        return getClass(((ParameterizedType) type).getRawType());
    } else if (type instanceof GenericArrayType) {
        Type componentType = ((GenericArrayType) type).getGenericComponentType();
        Class<?> componentClass = getClass(componentType);
        if (componentClass != null) {
            return Array.newInstance(componentClass, 0).getClass();
        } else {
            return null;
        }
    } else {
        return null;
    }
}

---

From source file:ArrayUtil.java

/**
 * Copies the elements of the {@code oldArray} to a new array with extra space to 
 * append the given array {@code toAppend1} and the array {@code toAppend2}.
 *//*from   w w w. ja  v a2 s .  co m*/
@SuppressWarnings("unchecked")
public static <T> T[] append(T[] oldArray, T[] toAppend1, T[] toAppend2) {
    Class<?> component = oldArray.getClass().getComponentType();
    T[] array = (T[]) Array.newInstance(component, oldArray.length + toAppend1.length + toAppend2.length);
    System.arraycopy(oldArray, 0, array, 0, oldArray.length);
    System.arraycopy(toAppend1, 0, array, oldArray.length, toAppend1.length);
    System.arraycopy(toAppend2, 0, array, oldArray.length + toAppend1.length, toAppend2.length);
    return array;
}

---

From source file:net.navasoft.madcoin.backend.services.controller.exception.impl.SessionControllerException.java

/**
 * Instantiates a new session//from   ww w . ja  va2  s . c  o m
 * net.navasoft.madcoin.backend.model.controller.impl exception.
 * 
 * @param exceptionMessages
 *            the exception messages
 * @param injected
 *            the injected
 * @param key
 *            the key
 * @param parameters
 *            the parameters
 * @since 28/07/2014, 11:34:20 PM
 */
public SessionControllerException(final MessageSource exceptionMessages, final Locale injected,
        final AllowedExceptionMessage key, Object... parameters) {
    super(exceptionMessages.getMessage(key.getPropertyKey(), literal(parameters), injected));
    locatedMessage = key.getPropertyKey();
    language = injected;
    reasonsToFail = (Object[]) Array.newInstance(Object.class, 0);
    reasonsToFail = ArrayUtils.add(reasonsToFail, parameters[0]);
    reasonsToFail = ArrayUtils.add(reasonsToFail, parameters[1]);
    setAllowedTips(parameters[parameters.length - 1]);
    formulateTips();
}

---

From source file:com.browseengine.bobo.serialize.JSONSerializer.java

private static void loadObject(Object array, Class type, int index, JSONArray jsonArray)
        throws JSONSerializationException, JSONException {
    if (type.isPrimitive()) {
        if (type == Integer.TYPE) {
            Array.setInt(array, index, jsonArray.getInt(index));
        } else if (type == Long.TYPE) {
            Array.setLong(array, index, jsonArray.getInt(index));
        } else if (type == Short.TYPE) {
            Array.setShort(array, index, (short) jsonArray.getInt(index));
        } else if (type == Boolean.TYPE) {
            Array.setBoolean(array, index, jsonArray.getBoolean(index));
        } else if (type == Double.TYPE) {
            Array.setDouble(array, index, jsonArray.getDouble(index));
        } else if (type == Float.TYPE) {
            Array.setFloat(array, index, (float) jsonArray.getDouble(index));
        } else if (type == Character.TYPE) {
            char ch = jsonArray.getString(index).charAt(0);
            Array.setChar(array, index, ch);
        } else if (type == Byte.TYPE) {
            Array.setByte(array, index, (byte) jsonArray.getInt(index));
        } else {//from w w  w . ja  va2  s.c o  m
            throw new JSONSerializationException("Unknown primitive: " + type);
        }
    } else if (type == String.class) {
        Array.set(array, index, jsonArray.getString(index));
    } else if (JSONSerializable.class.isAssignableFrom(type)) {
        JSONObject jObj = jsonArray.getJSONObject(index);
        JSONSerializable serObj = deSerialize(type, jObj);
        Array.set(array, index, serObj);
    } else if (type.isArray()) {
        Class componentClass = type.getComponentType();
        JSONArray subArray = jsonArray.getJSONArray(index);
        int len = subArray.length();

        Object newArray = Array.newInstance(componentClass, len);
        for (int k = 0; k < len; ++k) {
            loadObject(newArray, componentClass, k, subArray);
        }
    }
}

---

From source file:ReflectUtils.java

/**
 * //  w  w  w .j  a v a  2 s.  co m
 * @param theClass
 *          A "normal", non-array type.
 * 
 * @return The array version of the given type. For example, if you pass
 *         <em>String.class</em>, you get <em>String[].class</em>. If
 *         you pass <em>int.class</em>, you get <em>int[].class</em>. If
 *         the given class is already an array type, it is returned.
 * 
 * @see #getClassFromArrayClass(Class)
 * 
 */
public static Class getArrayClassFromClass(Class theClass) {
    if (theClass.isArray())
        return theClass;

    return Array.newInstance(theClass, 0).getClass();
}

---

From source file:edu.duke.cabig.c3pr.accesscontrol.ArrayFilterer.java

/**
 * //from www . j  av  a 2  s  . c  o  m
 * @see org.acegisecurity.afterinvocation.Filterer#getFilteredObject()
 */
public Object getFilteredObject() {
    // Recreate an array of same type and filter the removed objects.
    int originalSize = list.length;
    int sizeOfResultingList = originalSize - removeList.size();
    Object[] filtered = (Object[]) Array.newInstance(list.getClass().getComponentType(), sizeOfResultingList);

    for (int i = 0, j = 0; i < list.length; i++) {
        Object object = list[i];

        if (!removeList.contains(object)) {
            filtered[j] = object;
            j++;
        }
    }

    if (logger.isDebugEnabled()) {
        logger.debug("Original array contained " + originalSize + " elements; now contains "
                + sizeOfResultingList + " elements");
    }

    return filtered;
}

---

From source file:jef.tools.ArrayUtils.java

@SuppressWarnings("unchecked")
public static <T> T[] toArray(Enumeration<T> e, Class<T> type) {
    List<T> result = new ArrayList<T>();
    for (; e.hasMoreElements();) {
        result.add(e.nextElement());// w w  w  .j a v a2 s  .c om
    }
    return result.toArray((T[]) Array.newInstance(type, result.size()));
}

---

From source file:com.opengamma.analytics.financial.interestrate.annuity.derivative.Annuity.java

/**
 * @param payments The payments, not null or empty
 * @param pType The type of the payments, not null
 * @param isPayer True if the annuity is to be paid
 *//*from w w w .  ja  v  a2s .c  o  m*/
public Annuity(final List<? extends P> payments, final Class<P> pType, final boolean isPayer) {
    ArgumentChecker.noNulls(payments, "payments");
    ArgumentChecker.notNull(pType, "type");
    ArgumentChecker.isTrue(payments.size() > 0, "Payments size must be greater than zero");
    _payments = payments.toArray((P[]) Array.newInstance(pType, 0));
    _isPayer = isPayer;
}

---

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