b. The number ofbytes actually read is returned as an integer. This method blocks
until input data is available, end of file is detected, or an
exception is thrown.
Reads some number of bytes from the contained input stream and stores them into the buffer array. The number of bytes actually read is returned as an integer. This method blocks until input data is available, end of file is detected, or an exception is thrown.
If b is null, a NullPointerException is
thrown. If the length of b is zero, then no bytes are
read and 0 is returned; otherwise, there is an attempt
to read at least one byte. If no byte is available because the
stream is at end of file, the value -1 is returned;
otherwise, at least one byte is read and stored into b.
The first byte read is stored into element b[0], the
next one into b[1], and so on. The number of bytes read
is, at most, equal to the length of b. Let k
be the number of bytes actually read; these bytes will be stored in
elements b[0] through b[k-1], leaving
elements b[k] through b[b.length-1]
unaffected.
The read(b) method has the same effect as:
read(b, 0, b.length)
