uk.ac.starlink.util

Interface Destination

public interface Destination

Defines an object which can return an output stream, and hence represents the potential destination of a stream of data. It is used in preference to an OutputStream so that you can avoid opening output files before you know you need them, so you don't get new empty files (possibly overwriting old ones) when a command fails.

Since:

29 Nov 2006

Field Summary

Fields

Modifier and Type	Field and Description
static Destination	SYSTEM_OUT Destination which directs output to System.out.

Method Summary

Modifier and Type	Method and Description
java.io.OutputStream	createStream() Returns an output stream which will write to this destination.

Field Detail

SYSTEM_OUT

static final Destination SYSTEM_OUT

Destination which directs output to System.out.

Method Detail

createStream

java.io.OutputStream createStream()
                           throws java.io.IOException

Returns an output stream which will write to this destination. This method is only intended to be called once for a given instance.

Returns:

output stream

Throws:

java.io.IOException