org.erights.e.develop.exception
Class PrintStreamWriter

java.lang.Object
  |
  +--java.io.Writer
        |
        +--org.erights.e.develop.exception.PrintStreamWriter

public final class PrintStreamWriter

extends Writer

Untamed: This class shouldn't need to exist, but System.out and System.err are both PrintStreams, and PrintStream is deprecated in favor of PrintWriter.

XXX How should one obtain a Writer or PrintWriter to stdout and stderr? As long as we're at it, we also provide a static method for accessing System.in as a non-buffering BufferedReader (so that readline() is available).

Note that there is no reason to use this class as a type in a type declaration. No one should ever see any instances of it. Only its static methods are externally useful.

Note: As of some recent version of Java <= 1.3, PrintStream is no longer officially deprecated, probably because of System.out and System.err. However, E's TextWriters still need to wrap Writers, not PrintStreams, so we still need PrintStreamWriter.

Author:

Mark S. Miller

Field Summary

private static PrintStream	lastErrStream
private static PrintWriter	lastErrWriter
private static BufferedReader	lastInReader
private static InputStream	lastInStream
private static PrintStream	lastOutStream
private static PrintWriter	lastOutWriter
private PrintStream	myPS

Fields inherited from class java.io.Writer

lock

Constructor Summary

private

PrintStreamWriter(PrintStream ps)

Method Summary

void	close() Enabled:
void	flush() Enabled:
static PrintWriter	make(PrintStream ps) Enabled: Wrap the PrintStream in an adaptor so it seems to be a PrintWriter.
static PrintWriter	stderr() Enabled: System.err as a PrintWriter.
static BufferedReader	stdin() Enabled:
static PrintWriter	stdout() Enabled: System.out as a PrintWriter.
void	write(char[] cbuf, int off, int len) Enabled:

Methods inherited from class java.io.Writer

write, write, write, write

Methods inherited from class java.lang.Object

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

Field Detail

lastOutStream

private static PrintStream lastOutStream

lastOutWriter

private static PrintWriter lastOutWriter

lastErrStream

private static PrintStream lastErrStream

lastErrWriter

private static PrintWriter lastErrWriter

lastInStream

private static InputStream lastInStream

lastInReader

private static BufferedReader lastInReader

myPS

private final PrintStream myPS

Constructor Detail

PrintStreamWriter

private PrintStreamWriter(PrintStream ps)

Method Detail

make

public static PrintWriter make(PrintStream ps)

Enabled: Wrap the PrintStream in an adaptor so it seems to be a PrintWriter.

stdout

public static PrintWriter stdout()

Enabled: System.out as a PrintWriter. It's a function rather than a variable in case System.out gets changed.

stderr

public static PrintWriter stderr()

Enabled: System.err as a PrintWriter. It's a function rather than a variable in case System.err gets changed.

stdin

public static BufferedReader stdin()

Enabled:

close

public void close()

Enabled:

Specified by:

close in class Writer

flush

public void flush()

Enabled:

Specified by:

flush in class Writer

write

public void write(char[] cbuf,
                  int off,
                  int len)

Enabled:

Specified by:

write in class Writer

Parameters:

cbuf - Array of characters

off - Offset from which to start writing characters

len - Number of characters to write