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Java Standard Edition (SE)

Array


compact1, compact2, compact3
java.lang.reflect

Class Array



  • public final class Array
    extends Object
    The Array class provides static methods to dynamically create and access Java arrays.

    Array permits widening conversions to occur during a get or set operation, but throws an IllegalArgumentException if a narrowing conversion would occur.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method and Description
      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 the value of the indexed component in the specified array object, as a boolean.
      static byte getByte(Object array, int index)
      Returns the value of the indexed component in the specified array object, as a byte.
      static char getChar(Object array, int index)
      Returns the value of the indexed component in the specified array object, as a char.
      static double getDouble(Object array, int index)
      Returns the value of the indexed component in the specified array object, as a double.
      static float getFloat(Object array, int index)
      Returns the value of the indexed component in the specified array object, as a float.
      static int getInt(Object array, int index)
      Returns the value of the indexed component in the specified array object, as an int.
      static int getLength(Object array)
      Returns the length of the specified array object, as an int.
      static long getLong(Object array, int index)
      Returns the value of the indexed component in the specified array object, as a long.
      static short getShort(Object array, int index)
      Returns the value of the indexed component in the specified array object, as a short.
      static Object newInstance(Class<?> componentType, int... dimensions)
      Creates a new array with the specified component type and dimensions.
      static Object newInstance(Class<?> componentType, int length)
      Creates a new array with the specified component type and length.
      static void set(Object array, int index, Object value)
      Sets the value of the indexed component of the specified array object to the specified new value.
      static void setBoolean(Object array, int index, boolean z)
      Sets the value of the indexed component of the specified array object to the specified boolean value.
      static void setByte(Object array, int index, byte b)
      Sets the value of the indexed component of the specified array object to the specified byte value.
      static void setChar(Object array, int index, char c)
      Sets the value of the indexed component of the specified array object to the specified char value.
      static void setDouble(Object array, int index, double d)
      Sets the value of the indexed component of the specified array object to the specified double value.
      static void setFloat(Object array, int index, float f)
      Sets the value of the indexed component of the specified array object to the specified float value.
      static void setInt(Object array, int index, int i)
      Sets the value of the indexed component of the specified array object to the specified int value.
      static void setLong(Object array, int index, long l)
      Sets the value of the indexed component of the specified array object to the specified long value.
      static void setShort(Object array, int index, short s)
      Sets the value of the indexed component of the specified array object to the specified short value.


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