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bind system.out stream to SWT text widget [message #454473]

Thu, 21 April 2005 17:38

Duncan Krebs

Messages: 79
Registered: July 2009

Member

Hi,
I'm trying to figure out how I can bind the system.out stream to a swt
text widget. I've figured out that I can use System.setOut() to redirect
the stream. But now I'm stuck at trying to get it connected to a text
widget. Does anyone have any hints or code examples?!

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Re: bind system.out stream to SWT text widget [message #454474 is a reply to message #454473]

Thu, 21 April 2005 17:54

Charlie Surface

Messages: 40
Registered: July 2009

Member

Eclipse does this kind of thing when you launch Java applications, so
you could poke around in the JDT plugins.

Charlie

Duncan Krebs wrote:

> Hi,
> I'm trying to figure out how I can bind the system.out stream to a swt
> text widget. I've figured out that I can use System.setOut() to redirect
> the stream. But now I'm stuck at trying to get it connected to a text
> widget. Does anyone have any hints or code examples?!
>

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Re: bind system.out stream to SWT text widget [message #454477 is a reply to message #454474]

Thu, 21 April 2005 21:47

Duncan Krebs

Messages: 79
Registered: July 2009

Member

Charlie thanks for the idea. I figured out it involves using PipedStreams
and multiple threads.

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Re: bind system.out stream to SWT text widget [message #1844167 is a reply to message #454477]

Fri, 03 September 2021 20:24

Gerry Matte

Messages: 11
Registered: March 2014
Location: Nanaimo, BC, Canada

Junior Member

Is it possible to describe or share code for how you achieved this ?

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Re: bind system.out stream to SWT text widget [message #1844245 is a reply to message #1844167]

Tue, 07 September 2021 05:42

Martin J

Messages: 50
Registered: August 2015

Member

This is very easy to do!

First extend PrintStream as follows;

public class YourPrintStream extends PrintStream {

and implement the following methods inside this class to display your message on your SWT widget. That is, implement write() to display on your widget.

public void write(int b) {
public void write(byte[] buf, int off, int len) {
public void close() {

Finally in the beginning, instantiate this extended class and set for out and err as follows;

YourPrintStream f3 = new YourPrintStream(,,,);
System.setOut(f3);
System.setErr(f3);

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