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	/*
	* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package java.lang.reflect;

	/**
	* The {@code Array} class provides static methods to dynamically create and
	* access Java arrays.
	*
	* <p>{@code Array} permits widening conversions to occur during a get or set
	* operation, but throws an {@code IllegalArgumentException} if a narrowing
	* conversion would occur.
	*
	* @author Nakul Saraiya
	*/
	public final
	class Array {

	/**
	* Constructor. Class Array is not instantiable.
	*/
	private Array() {}

	/**
	* Creates a new array with the specified component type and
	* length.
	* Invoking this method is equivalent to creating an array
	* as follows:
	* <blockquote>
	* <pre>
	* int[] x = {length};
	* Array.newInstance(componentType, x);
	* </pre>
	* </blockquote>
	*
	* <p>The number of dimensions of the new array must not
	* exceed 255.
	*
	* @param componentType the {@code Class} object representing the
	* component type of the new array
	* @param length the length of the new array
	* @return the new array
	* @exception NullPointerException if the specified
	* {@code componentType} parameter is null
	* @exception IllegalArgumentException if componentType is {@link
	* Void#TYPE} or if the number of dimensions of the requested array
	* instance exceed 255.
	* @exception NegativeArraySizeException if the specified {@code length}
	* is negative
	*/
	public static Object newInstance(Class<?> componentType, int length)
	throws NegativeArraySizeException {
	return newArray(componentType, length);
	}

	/**
	* Creates a new array
	* with the specified component type and dimensions.
	* If {@code componentType}
	* represents a non-array class or interface, the new array
	* has {@code dimensions.length} dimensions and
	* {@code componentType} as its component type. If
	* {@code componentType} represents an array class, the
	* number of dimensions of the new array is equal to the sum
	* of {@code dimensions.length} and the number of
	* dimensions of {@code componentType}. In this case, the
	* component type of the new array is the component type of
	* {@code componentType}.
	*
	* <p>The number of dimensions of the new array must not
	* exceed 255.
	*
	* @param componentType the {@code Class} object representing the component
	* type of the new array
	* @param dimensions an array of {@code int} representing the dimensions of
	* the new array
	* @return the new array
	* @exception NullPointerException if the specified
	* {@code componentType} argument is null
	* @exception IllegalArgumentException if the specified {@code dimensions}
	* argument is a zero-dimensional array, if componentType is {@link
	* Void#TYPE}, or if the number of dimensions of the requested array
	* instance exceed 255.
	* @exception NegativeArraySizeException if any of the components in
	* the specified {@code dimensions} argument is negative.
	*/
	public static Object newInstance(Class<?> componentType, int... dimensions)
	throws IllegalArgumentException, NegativeArraySizeException {
	return multiNewArray(componentType, dimensions);
	}

	/**
	* Returns the length of the specified array object, as an {@code int}.
	*
	* @param array the array
	* @return the length of the array
	* @exception IllegalArgumentException if the object argument is not
	* an array
	*/
	public static native int getLength(Object array)
	throws IllegalArgumentException;

	/**
	* Returns the value of the indexed component in the specified
	* array object. The value is automatically wrapped in an object
	* if it has a primitive type.
	*
	* @param array the array
	* @param index the index
	* @return the (possibly wrapped) value of the indexed component in
	* the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	*/
	public static native Object get(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code boolean}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native boolean getBoolean(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code byte}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native byte getByte(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code char}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native char getChar(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code short}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native short getShort(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as an {@code int}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native int getInt(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code long}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native long getLong(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code float}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native float getFloat(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Returns the value of the indexed component in the specified
	* array object, as a {@code double}.
	*
	* @param array the array
	* @param index the index
	* @return the value of the indexed component in the specified array
	* @exception NullPointerException If the specified object is null
	* @exception IllegalArgumentException If the specified object is not
	* an array, or if the indexed element cannot be converted to the
	* return type by an identity or widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to the
	* length of the specified array
	* @see Array#get
	*/
	public static native double getDouble(Object array, int index)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified new value. The new value is first
	* automatically unwrapped if the array has a primitive component
	* type.
	* @param array the array
	* @param index the index into the array
	* @param value the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the array component type is primitive and
	* an unwrapping conversion fails
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	*/
	public static native void set(Object array, int index, Object value)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code boolean} value.
	* @param array the array
	* @param index the index into the array
	* @param z the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setBoolean(Object array, int index, boolean z)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code byte} value.
	* @param array the array
	* @param index the index into the array
	* @param b the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setByte(Object array, int index, byte b)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code char} value.
	* @param array the array
	* @param index the index into the array
	* @param c the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setChar(Object array, int index, char c)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code short} value.
	* @param array the array
	* @param index the index into the array
	* @param s the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setShort(Object array, int index, short s)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code int} value.
	* @param array the array
	* @param index the index into the array
	* @param i the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setInt(Object array, int index, int i)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code long} value.
	* @param array the array
	* @param index the index into the array
	* @param l the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setLong(Object array, int index, long l)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code float} value.
	* @param array the array
	* @param index the index into the array
	* @param f the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setFloat(Object array, int index, float f)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/**
	* Sets the value of the indexed component of the specified array
	* object to the specified {@code double} value.
	* @param array the array
	* @param index the index into the array
	* @param d the new value of the indexed component
	* @exception NullPointerException If the specified object argument
	* is null
	* @exception IllegalArgumentException If the specified object argument
	* is not an array, or if the specified value cannot be converted
	* to the underlying array's component type by an identity or a
	* primitive widening conversion
	* @exception ArrayIndexOutOfBoundsException If the specified {@code index}
	* argument is negative, or if it is greater than or equal to
	* the length of the specified array
	* @see Array#set
	*/
	public static native void setDouble(Object array, int index, double d)
	throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

	/*
	* Private
	*/

	private static native Object newArray(Class<?> componentType, int length)
	throws NegativeArraySizeException;

	private static native Object multiNewArray(Class<?> componentType,
	int[] dimensions)
	throws IllegalArgumentException, NegativeArraySizeException;


	}

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