A.3 Managing Arrays (_quick variants)

anewarray_quick

Stack: ..., size => result

indexbyte1 and indexbyte2 are are used to construct an index into the constant pool of the current class. The entry must be a class.

A new array of the indicated class type and capable of holding size elements is allocated, and result is a reference to this new array. Allocation of an array large enough to contain size items of the given class type is attempted. All elements of the array are initialized to zero.

If size is less than zero, a NegativeArraySizeException is thrown. If there is not enough memory to allocate the array, an OutOfMemoryError is thrown.

multianewarray_quick

Stack: ..., size1, size2, ...sizen => result

indexbyte1 and indexbyte2 are used to construct an index into the constant pool of the current class. The resulting entry must be a class.

dimensions has the following aspects:

• It must be an integer ³ 1.

• It represents the number of dimensions being created. It must be the number of dimensions of the array class.

• It represents the number of elements that are popped off the stack. All must be integers greater than or equal to zero. These are used as the sizes of the dimension.

The result is a reference to the new array object.

Note: More explanation needed about how this is an array of arrays.