java.io

Class InputStream

java.lang.Object

java.io.InputStream

Direct Known Subclasses:

ByteArrayInputStream, ConsoleErrorStream, ConsoleInputStream, FileInputStream, FilterInputStream, NullInputStream, PipedInputStream, SequenceInputStream, SerialInputStream, StringBufferInputStream

public abstract class InputStream
extends Object

Constructor Summary

Constructors

Constructor and Description
InputStream() InputStream

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
void	mark(int readlimit) Marks the current position in this input stream.
boolean	markSupported() Tests if this input stream supports the mark and reset methods
abstract int	read()
int	read(byte[] abyte0)
int	read(byte[] arr, int ofs, int len) Read byte data until there is no more available.
void	reset() Repositions this stream to the position at the time the mark method was last called.
long	skip(long l)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InputStream

public InputStream()

InputStream

Method Detail

available

public int available()
              throws IOException

Returns:

?

Throws:

IOException - ?

close

public void close()
           throws IOException

Throws:

IOException - ?

mark

public void mark(int readlimit)

Marks the current position in this input stream.

Parameters:

readlimit - placeholder unused

markSupported

public boolean markSupported()

Tests if this input stream supports the mark and reset methods

Returns:

true if supported

read

public abstract int read()
                  throws IOException

Returns:

?

Throws:

IOException - ?

read

public int read(byte[] abyte0)
         throws IOException

Parameters:

abyte0 - ?

Returns:

?

Throws:

IOException - ?

read

public int read(byte[] arr,
                int ofs,
                int len)
         throws IOException

Read byte data until there is no more available. This does not block for the balance of any data. If there is no data this returns -1. If there is some data but not all that is requested it returns what it has.

Parameters:

arr - array to receive bytes

ofs - offset into the array where data is placed

len - maximum count of bytes to read

Returns:

count of bytes read if any or -1

Throws:

IOException - if the stream is not available

reset

public void reset()
           throws IOException

Repositions this stream to the position at the time the mark method was last called.

Throws:

IOException - if not supported

skip

public long skip(long l)
          throws IOException

Parameters:

l - ?

Returns:

?

Throws:

IOException - ?