java.io.InputStream is an abstract class that
contains the basic methods for reading raw bytes of data from a
stream.
Although InputStream is abstract,
many methods are only specified to return
an InputStream, so you'll often have to deal
directly with only the methods declared in this class.
public abstract int read() throws IOException
public int read(byte[] data) throws IOException
public int read(byte[] data, int offset, int length) throws IOException
public long skip(long n) throws IOException
public int available() throws IOException
public void close() throws IOException
public synchronized void mark(int readlimit)
public synchronized void reset() throws IOException
public boolean markSupported()
Notice that almost all these methods can throw an
IOException. This is true of pretty much anything
to do with input and output. The only exception is the
PrintStream class which eats all exceptions.