Creates a <code>ByteArrayInputStream</code>
so that it uses <code>buf</code> as its
buffer array.
The buffer array is not copied.
The initial value of <code>pos</code>
is <code>0</code> and the initial value
of <code>count</code> is the length of
<code>buf</code>.
Creates a <code>ByteArrayInputStream</code> so that it uses <code>buf</code> as its buffer array. The buffer array is not copied. The initial value of <code>pos</code> is <code>0</code> and the initial value of <code>count</code> is the length of <code>buf</code>.
@param buf the input buffer.