javax.swing
Class JEditorPane.PageStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          javax.swing.JEditorPane.PageStream

Enclosing class:

JEditorPane

static class JEditorPane.PageStream

extends FilterInputStream

Field Summary

(package private) boolean

canceled

Fields inherited from class java.io.FilterInputStream

in

Fields inherited from class java.io.InputStream

Constructor Summary

JEditorPane.PageStream(InputStream i)

Method Summary

int	available() Returns the number of bytes that can be read from this input stream without blocking.
void	cancel() Cancel the loading of the stream by throwing an IOException on the next request.
protected void	checkCanceled()
int	read() Reads the next byte of data from this input stream.
void	reset() Repositions this stream to the position at the time the mark method was last called on this input stream.
long	skip(long n) Skips over and discards n bytes of data from the input stream.

Methods inherited from class java.io.FilterInputStream

close, mark, markSupported, read, read

Methods inherited from class java.lang.Object

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

Field Detail

canceled

boolean canceled

Constructor Detail

JEditorPane.PageStream

public JEditorPane.PageStream(InputStream i)

Method Detail

cancel

public void cancel()

Cancel the loading of the stream by throwing an IOException on the next request.

checkCanceled

protected void checkCanceled()
                      throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Description copied from class: FilterInputStream

Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

This method simply performs in.read() and returns the result.

Overrides:

read in class FilterInputStream

Returns:

the next byte of data, or -1 if the end of the stream is reached.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterInputStream.in

skip

public long skip(long n)
          throws IOException

Description copied from class: FilterInputStream

Skips over and discards n bytes of data from the input stream. The skip method may, for a variety of reasons, end up skipping over some smaller number of bytes, possibly 0. The actual number of bytes skipped is returned.

This method simply performs in.skip(n).

Overrides:

skip in class FilterInputStream

Parameters:

n - the number of bytes to be skipped.

Returns:

the actual number of bytes skipped.

Throws:

IOException - if an I/O error occurs.

available

public int available()
              throws IOException

Description copied from class: FilterInputStream

Returns the number of bytes that can be read from this input stream without blocking.

This method simply performs in.available() and returns the result.

Overrides:

available in class FilterInputStream

Returns:

the number of bytes that can be read from the input stream without blocking.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterInputStream.in

reset

public void reset()
           throws IOException

Description copied from class: FilterInputStream

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

This method simply performs in.reset().

Stream marks are intended to be used in situations where you need to read ahead a little to see what's in the stream. Often this is most easily done by invoking some general parser. If the stream is of the type handled by the parse, it just chugs along happily. If the stream is not of that type, the parser should toss an exception when it fails. If this happens within readlimit bytes, it allows the outer code to reset the stream and try another parser.

Overrides:

reset in class FilterInputStream

Throws:

IOException - if the stream has not been marked or if the mark has been invalidated.

See Also:

FilterInputStream.in, FilterInputStream.mark(int)