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public abstract boolean willReadBlock()
true if a call to read would block
for data.
true if read would block; otherwise
returns false.
public abstract int read(byte buffer[],
int offset,
int length) throws IOException
Reads up to length bytes from the input stream into
an array of bytes.
If the first argument is null, up to
length bytes are read and discarded.
Returns -1 when the end
of the media is reached.
This method only returns 0 if it was called with
a length of 0.
read
was called with length 0.
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