Array

The Array class provides static methods to dynamically create and access Java arrays.

Get the length of an Array

static int getLength(Object array): Returns the length of the specified array object, as an int.

static Object get(Object array, int index): Returns the value of the indexed component in the specified array object.
static boolean getBoolean(Object array, int index): Returns array element as a boolean.
static byte getByte(Object array, int index): Returns array element as a byte.
static char getChar(Object array, int index): Returns array element as a char.
static double getDouble(Object array, int index): Returns array element as a double.
static float getFloat(Object array, int index): Returns array element as a float.
static int getInt(Object array, int index): Returns array element as an int.
static long getLong(Object array, int index): Returns array element as a long.
static short getShort(Object array, int index): Returns array element as a short.

static Object newInstance(Class<?> componentType, int... dimensions): Creates a new array with the component type and dimensions.
static Object newInstance(Class<?> componentType, int length): Creates a new array with the component type and length.

static void set(Object array, int index, Object value): Sets array element to the new value.
static void setBoolean(Object array, int index, boolean z): Sets array element to the boolean value.
static void setByte(Object array, int index, byte b): Sets array element to the byte value.
static void setChar(Object array, int index, char c): Sets array element to the char value.
static void setDouble(Object array, int index, double d): Sets array element to the double value.
static void setFloat(Object array, int index, float f): Sets array element to the float value.
static void setInt(Object array, int index, int i): Sets array element to the int value.
static void setLong(Object array, int index, long l): Sets array element to the long value.
static void setShort(Object array, int index, short s): Sets array element to the short value.

Revised from Open JDK source code

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