Shouldn't type of 'size' be Long?

1

The constructors for Array, FloatArray, ByteArray, etc take a 'size' parameter of type Int

To allow full use of the memory addressing power of 64bit operating systems shouldn’t the type be Long?

Amazon’s memory-optimized EC2 instances have ~244 GB. On such machines a size parameter of Int just doesn’t cut it .

2

JVM only supports 32-bit integers as array indices. If you really need this, you probably can workaround that restriction using sun.misc.Unsafe or moving some code to the native.

3

Makes sense. Thanks for the tip about sun.misc.Unsafe.