...byte or boolean array| bastore |
Stack
..., arrayref, index, value ...
Description
The arrayref must be of type reference and must refer to an array whose components are of type byte or of type boolean. The index and the value must both be of type int. The arrayref, index, and value are popped from the operand stack. The int value is truncated to a byte and stored as the component of the array indexed by index.
Runtime Exceptions
If arrayref is null, bastore throws a NullPointerException.
Otherwise, if index is not within the bounds of the array referenced by arrayref, the bastore instruction throws an ArrayIndexOutOfBoundsException.
Notes
The bastore instruction is used to store values into both byte and boolean arrays. In Sun's implementation of the Java Virtual Machine, boolean arrays (arrays of type T_BOOLEAN; see §3.1 and the description of the newarray instruction) are implemented as arrays of 8-bit values. Other implementations may implement packed boolean arrays; the bastore instruction of such implementations must be used to store into those arrays.