RFR 8139206: Add InputStream readNBytes(int len)

[Brian Burkhalter]

The proposed change has been modified to replace the two methods

byte[] InputStream.readAllBytes(int) // reads at most ‘len’ bytes
byte[] InputStream.readNBytes(int) // reads exactly ‘len’ bytes or throws IOException

with a single method

byte[] InputStream.readNBytes(int) // reads at most ‘len’ bytes

A negative value of ‘len’ will now cause an IllegalArgumentException instead of an IndexOutOfBoundsException. Also some verbiage has been improved.

http://cr.openjdk.java.net/~bpb/8139206/webrev.01/

Thanks,

Brian

On Jan 16, 2018, at 11:17 AM, Brian Burkhalter <brian.burkhalter at oracle.com> wrote:

> https://bugs.openjdk.java.net/browse/JDK-8139206
> http://cr.openjdk.java.net/~bpb/8139206/webrev.00/
> 
> This change would add a new method “byte[] InputStream.readNBytes(int len)” which would read up to at most ‘len’ bytes from  the stream and return them in an internally allocated array.