content: /*
   * Copyright (C) 2014 The Android Open Source Project
   * 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;
  
  import dalvik.annotation.optimization.FastNative;
  
  /**
   * 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 {
          // Android-changed: New implementation of newInstance(Class, int...)
          if (dimensions.length <= 0 || dimensions.length > 255) {
              throw new IllegalArgumentException("Bad number of dimensions: " + dimensions.length);
          }
          if (componentType == void.class) {
              throw new IllegalArgumentException("Can't allocate an array of void");
          }
          if (componentType == null) {
              throw new NullPointerException("componentType == null");
          }
          return createMultiArray(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
       */
      // Android-changed: Non-native implementation of getLength(Object)
      // Android-changed: Removal of explicit throws IllegalArgumentException from method signature.
      public static int getLength(Object array)
          /* throws IllegalArgumentException */ {
          if (array instanceof Object[]) {
              return ((Object[]) array).length;
          } else if (array instanceof boolean[]) {
              return ((boolean[]) array).length;
          } else if (array instanceof byte[]) {
              return ((byte[]) array).length;
          } else if (array instanceof char[]) {
              return ((char[]) array).length;
          } else if (array instanceof double[]) {
              return ((double[]) array).length;
          } else if (array instanceof float[]) {
              return ((float[]) array).length;
          } else if (array instanceof int[]) {
              return ((int[]) array).length;
          } else if (array instanceof long[]) {
              return ((long[]) array).length;
          } else if (array instanceof short[]) {
              return ((short[]) array).length;
          }
          throw badArray(array);
        }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of get(Object, int)
      public static Object get(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof Object[]) {
              return ((Object[]) array)[index];
          }
          if (array instanceof boolean[]) {
              return ((boolean[]) array)[index] ? Boolean.TRUE : Boolean.FALSE;
          }
          if (array instanceof byte[]) {
              return Byte.valueOf(((byte[]) array)[index]);
          }
          if (array instanceof char[]) {
              return Character.valueOf(((char[]) array)[index]);
          }
          if (array instanceof short[]) {
              return Short.valueOf(((short[]) array)[index]);
          }
          if (array instanceof int[]) {
              return Integer.valueOf(((int[]) array)[index]);
          }
          if (array instanceof long[]) {
              return Long.valueOf(((long[]) array)[index]);
          }
          if (array instanceof float[]) {
              return new Float(((float[]) array)[index]);
          }
          if (array instanceof double[]) {
              return new Double(((double[]) array)[index]);
          }
          if (array == null) {
              throw new NullPointerException("array == null");
          }
          throw notAnArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getBoolean(Object, int)
      public static boolean getBoolean(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof boolean[]) {
              return ((boolean[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getByte(Object, int)
      public static byte getByte(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof byte[]) {
              return ((byte[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getChar(Object, int)
      public static char getChar(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof char[]) {
              return ((char[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getShort(Object, int)
      public static short getShort(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof short[]) {
              return ((short[]) array)[index];
          } else if (array instanceof byte[]) {
              return ((byte[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getInt(Object, int)
      public static int getInt(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof int[]) {
              return ((int[]) array)[index];
          } else if (array instanceof byte[]) {
              return ((byte[]) array)[index];
          } else if (array instanceof char[]) {
              return ((char[]) array)[index];
          } else if (array instanceof short[]) {
              return ((short[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getLong(Object, int)
      public static long getLong(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof long[]) {
              return ((long[]) array)[index];
          } else if (array instanceof byte[]) {
              return ((byte[]) array)[index];
          } else if (array instanceof char[]) {
              return ((char[]) array)[index];
          } else if (array instanceof int[]) {
              return ((int[]) array)[index];
          } else if (array instanceof short[]) {
              return ((short[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getFloat(Object, int)
      public static float getFloat(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof float[]) {
              return ((float[]) array)[index];
          } else if (array instanceof byte[]) {
              return ((byte[]) array)[index];
          } else if (array instanceof char[]) {
              return ((char[]) array)[index];
          } else if (array instanceof int[]) {
              return ((int[]) array)[index];
          } else if (array instanceof long[]) {
              return ((long[]) array)[index];
          } else if (array instanceof short[]) {
              return ((short[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of getDouble(Object, int)
      public static double getDouble(Object array, int index)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof double[]) {
              return ((double[]) array)[index];
          } else if (array instanceof byte[]) {
              return ((byte[]) array)[index];
          } else if (array instanceof char[]) {
              return ((char[]) array)[index];
          } else if (array instanceof float[]) {
              return ((float[]) array)[index];
          } else if (array instanceof int[]) {
              return ((int[]) array)[index];
          } else if (array instanceof long[]) {
              return ((long[]) array)[index];
          } else if (array instanceof short[]) {
              return ((short[]) array)[index];
          }
          throw badArray(array);
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of set(Object, int, Object)
      public static void set(Object array, int index, Object value)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (!array.getClass().isArray()) {
              throw notAnArray(array);
          }
  
          if (array instanceof Object[]) {
              if (value != null && !array.getClass().getComponentType().isInstance(value)) {
                  throw incompatibleType(array);
              }
              ((Object[]) array)[index] = value;
          } else {
              if (value == null) {
                  throw new IllegalArgumentException("Primitive array can't take null values.");
              }
              if (value instanceof Boolean) {
                  setBoolean(array, index, ((Boolean) value).booleanValue());
              } else if (value instanceof Byte) {
                  setByte(array, index, ((Byte) value).byteValue());
              } else if (value instanceof Character) {
                  setChar(array, index, ((Character) value).charValue());
              } else if (value instanceof Short) {
                  setShort(array, index, ((Short) value).shortValue());
              } else if (value instanceof Integer) {
                  setInt(array, index, ((Integer) value).intValue());
              } else if (value instanceof Long) {
                  setLong(array, index, ((Long) value).longValue());
              } else if (value instanceof Float) {
                  setFloat(array, index, ((Float) value).floatValue());
              } else if (value instanceof Double) {
                  setDouble(array, index, ((Double) value).doubleValue());
              }
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setBoolean(Object, int, boolean)
      // Android-changed: Removal of explicit runtime exceptions throws clause
      public static void setBoolean(Object array, int index, boolean z)
          /* throws IllegalArgumentException, ArrayIndexOutOfBoundsException */ {
          if (array instanceof boolean[]) {
              ((boolean[]) array)[index] = z;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setByte(Object, int, byte)
      public static void setByte(Object array, int index, byte b)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof byte[]) {
              ((byte[]) array)[index] = b;
          } else if (array instanceof double[]) {
              ((double[]) array)[index] = b;
          } else if (array instanceof float[]) {
              ((float[]) array)[index] = b;
          } else if (array instanceof int[]) {
              ((int[]) array)[index] = b;
          } else if (array instanceof long[]) {
              ((long[]) array)[index] = b;
          } else if (array instanceof short[]) {
              ((short[]) array)[index] = b;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setChar(Object, int, char)
      public static void setChar(Object array, int index, char c)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof char[]) {
              ((char[]) array)[index] = c;
          } else if (array instanceof double[]) {
              ((double[]) array)[index] = c;
          } else if (array instanceof float[]) {
              ((float[]) array)[index] = c;
          } else if (array instanceof int[]) {
              ((int[]) array)[index] = c;
          } else if (array instanceof long[]) {
              ((long[]) array)[index] = c;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setShort(Object, int, short)
      public static void setShort(Object array, int index, short s)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof short[]) {
              ((short[]) array)[index] = s;
          } else if (array instanceof double[]) {
              ((double[]) array)[index] = s;
          } else if (array instanceof float[]) {
              ((float[]) array)[index] = s;
          } else if (array instanceof int[]) {
              ((int[]) array)[index] = s;
          } else if (array instanceof long[]) {
              ((long[]) array)[index] = s;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setInt(Object, int, int)
      public static void setInt(Object array, int index, int i)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof int[]) {
              ((int[]) array)[index] = i;
          } else if (array instanceof double[]) {
              ((double[]) array)[index] = i;
          } else if (array instanceof float[]) {
              ((float[]) array)[index] = i;
          } else if (array instanceof long[]) {
              ((long[]) array)[index] = i;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setBoolean(Object, int, long)
      public static void setLong(Object array, int index, long l)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof long[]) {
              ((long[]) array)[index] = l;
          } else if (array instanceof double[]) {
              ((double[]) array)[index] = l;
          } else if (array instanceof float[]) {
              ((float[]) array)[index] = l;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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 void setFloat(Object array, int index, float f)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof float[]) {
              ((float[]) array)[index] = f;
          } else if (array instanceof double[]) {
              ((double[]) array)[index] = f;
          } else {
              throw badArray(array);
          }
      }
  
      /**
       * 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
       */
      // Android-changed: Non-native implementation of setDouble(Object, int, double)
      public static void setDouble(Object array, int index, double d)
          throws IllegalArgumentException, ArrayIndexOutOfBoundsException {
          if (array instanceof double[]) {
              ((double[]) array)[index] = d;
          } else {
              throw badArray(array);
          }
      }
  
      /*
       * Private
       */
  
      // Android-added: Added javadocs for newArray(Class, int)
      /**
       * Returns a new array of the specified component type and length.
       * Equivalent to {@code new componentType[size]}.
       *
       * @throws NullPointerException
       *             if the component type is null
       * @throws NegativeArraySizeException
       *             if {@code size < 0}
       */
      // Android-changed: Non-native implementation of newArray(Class, int)
      private static Object newArray(Class<?> componentType, int length)
          throws NegativeArraySizeException {
          if (!componentType.isPrimitive()) {
              return createObjectArray(componentType, length);
          } else if (componentType == char.class) {
              return new char[length];
          } else if (componentType == int.class) {
              return new int[length];
          } else if (componentType == byte.class) {
              return new byte[length];
          } else if (componentType == boolean.class) {
              return new boolean[length];
          } else if (componentType == short.class) {
              return new short[length];
          } else if (componentType == long.class) {
              return new long[length];
          } else if (componentType == float.class) {
              return new float[length];
          } else if (componentType == double.class) {
              return new double[length];
          } else if (componentType == void.class) {
              throw new IllegalArgumentException("Can't allocate an array of void");
          }
          throw new AssertionError();
      }
  
      // Android-removed: multiNewArray(Class, int[]) method. createMultiArray used instead.
      /*
      private static native Object multiNewArray(Class<?> componentType,
          int[] dimensions)
          throws IllegalArgumentException, NegativeArraySizeException;
      */
  
      // Android-added: createMultiArray(Class, int[]) method. Used instead of multiNewArray
      /*
       * Create a multi-dimensional array of objects with the specified type.
       */
      @FastNative
      private static native Object createMultiArray(Class<?> componentType, int[] dimensions)
              throws NegativeArraySizeException;
  
      // BEGIN Android-added: Helper methods to support custom method implementations.
      /*
       * Create a one-dimensional array of objects with the specified type.
       */
      @FastNative
      private static native Object createObjectArray(Class<?> componentType, int length)
              throws NegativeArraySizeException;
  
      private static IllegalArgumentException notAnArray(Object o) {
          throw new IllegalArgumentException("Not an array: " + o.getClass());
      }
  
      private static IllegalArgumentException incompatibleType(Object o) {
          throw new IllegalArgumentException("Array has incompatible type: " + o.getClass());
      }
  
      private static RuntimeException badArray(Object array) {
          if (array == null) {
              throw new NullPointerException("array == null");
          } else if (!array.getClass().isArray()) {
              throw notAnArray(array);
          } else {
              throw incompatibleType(array);
          }
      }
      // END Android-added: Helper methods to support custom method implementations.
  }
  