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Groups > comp.lang.java.gui > #3690 > unrolled thread
| Started by | "Chris" <chris@THRWHITE.remove-dii-this> |
|---|---|
| First post | 2011-04-27 15:46 +0000 |
| Last post | 2011-04-27 15:46 +0000 |
| Articles | 3 — 2 participants |
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Re: How to combine charac "Chris" <chris@THRWHITE.remove-dii-this> - 2011-04-27 15:46 +0000
Re: How to combine charac "Daniele Futtorovic" <daniele.futtorovic@THRWHITE.remove-dii-this> - 2011-04-27 15:46 +0000
Re: How to combine charac "Chris" <chris@THRWHITE.remove-dii-this> - 2011-04-27 15:46 +0000
| From | "Chris" <chris@THRWHITE.remove-dii-this> |
|---|---|
| Date | 2011-04-27 15:46 +0000 |
| Subject | Re: How to combine charac |
| Message-ID | <fe86ea22-f86a-44c0-91d2-068b778883fe@h1g2000prh.googlegroups.com> |
To: comp.lang.java.gui
On Jun 22, 8:18 pm, Chris <chrislia...@gmail.com> wrote:
> Okay, I'm still not getting it.
> Does anyone know how to combine char's from a KeyEvent to combine into
> a string?
> Thank you....
>
> My current code:
>
> import java.awt.*;
> import java.awt.event.*;
> import javax.swing.*;
>
> public class InputObject {
>
> public static void main(String[] args)
> {
> EventQueue.invokeLater(new Runnable() {
> public void run() {
> JFrame f = new JFrame();
> f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
> JTextField tf = new JTextField(30);
> tf.addKeyListener(new KeyAdapter() {
> public void keyTyped(KeyEvent ke)
> {
> String s = "" + ke.getKeyChar();
> final StringBuffer strb = new StringBuffer (s);
>
> if(!s.equals(" "))
> {
> System.out.println (strb.toString());
> strb.append (s);
> }
> ke.consume();
> }
> });
>
> f.add(tf,BorderLayout.CENTER);
> f.pack();
> f.setVisible(true);
> }
> });
> }
>
>
>
> }- Hide quoted text -
>
> - Show quoted text -
Nevermind. Got it...
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| From | "Daniele Futtorovic" <daniele.futtorovic@THRWHITE.remove-dii-this> |
|---|---|
| Date | 2011-04-27 15:46 +0000 |
| Message-ID | <g3oa7c$9kn$1@registered.motzarella.org> |
| In reply to | #3690 |
To: comp.lang.java.gui
On 2008-06-23 05:27 +0100, Chris allegedly wrote:
> On Jun 22, 8:18 pm, Chris <chrislia...@gmail.com> wrote:
>> Okay, I'm still not getting it.
>> Does anyone know how to combine char's from a KeyEvent to combine into
>> a string?
>> Thank you....
>>
>> My current code:
>>
>> import java.awt.*;
>> import java.awt.event.*;
>> import javax.swing.*;
>>
>> public class InputObject {
>>
>> public static void main(String[] args)
>> {
>> EventQueue.invokeLater(new Runnable() {
>> public void run() {
>> JFrame f = new JFrame();
>> f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>> JTextField tf = new JTextField(30);
>> tf.addKeyListener(new KeyAdapter() {
>> public void keyTyped(KeyEvent ke)
>> {
>> String s = "" + ke.getKeyChar();
>> final StringBuffer strb = new StringBuffer (s);
>>
>> if(!s.equals(" "))
>> {
>> System.out.println (strb.toString());
>> strb.append (s);
>> }
>> ke.consume();
>> }
>> });
>>
>> f.add(tf,BorderLayout.CENTER);
>> f.pack();
>> f.setVisible(true);
>> }
>> });
>> }
>>
>>
>>
>> }- Hide quoted text -
>>
>> - Show quoted text -
>
> Nevermind. Got it...
You're welcome.
Note that instead of writing...
> String s = "" + ke.getKeyChar();
...it would be cleaner to use...
String s = String.valueOf(ke.getKeyChar());
...which is what happens under the hood anyway, except that the second
way avoids one additional Object (a StringBuilder) being instanciated.
Better yet, you can do your comparision with the char primitive:
char c = ke.getKeyChar();
if( c != ' ' ){ // double quotes quote Strings, single quotes, chars
buffer.append( c );
}
else{
System.out.println( buffer.toString() );
buffer.setLength( 0 );
}
--
DF.
to reply privately, change the top-level domain
in the FROM address from "invalid" to "net"
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| From | "Chris" <chris@THRWHITE.remove-dii-this> |
|---|---|
| Date | 2011-04-27 15:46 +0000 |
| Message-ID | <3a6b77e3-e906-4b0c-aa1c-4c9589ce9525@g16g2000pri.googlegroups.com> |
| In reply to | #3692 |
To: comp.lang.java.gui
On Jun 23, 7:02 am, Daniele Futtorovic <da.futt.n...@laposte.invalid>
wrote:
> On 2008-06-23 05:27 +0100, Chris allegedly wrote:
>
>
>
>
>
> > On Jun 22, 8:18 pm, Chris <chrislia...@gmail.com> wrote:
> >> Okay, I'm still not getting it.
> >> Does anyone know how to combine char's from a KeyEvent to combine into
> >> a string?
> >> Thank you....
>
> >> My current code:
>
> >> import java.awt.*;
> >> import java.awt.event.*;
> >> import javax.swing.*;
>
> >> public class InputObject {
>
> >> public static void main(String[] args)
> >> {
> >> EventQueue.invokeLater(new Runnable() {
> >> public void run() {
> >> JFrame f = new JFrame();
> >> f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
> >> JTextField tf = new JTextField(30);
> >> tf.addKeyListener(new KeyAdapter() {
> >> public void keyTyped(KeyEvent ke)
> >> {
> >> String s = "" + ke.getKeyChar();
> >> final StringBuffer strb = new StringBuffer (s);
>
> >> if(!s.equals(" "))
> >> {
> >> System.out.println (strb.toString());
> >> strb.append (s);
> >> }
> >> ke.consume();
> >> }
> >> });
>
> >> f.add(tf,BorderLayout.CENTER);
> >> f.pack();
> >> f.setVisible(true);
> >> }
> >> });
> >> }
>
> >> }- Hide quoted text -
>
> >> - Show quoted text -
>
> > Nevermind. Got it...
>
> You're welcome.
>
> Note that instead of writing...
>
> > String s = "" + ke.getKeyChar();
>
> ...it would be cleaner to use...
>
> String s = String.valueOf(ke.getKeyChar());
>
> ...which is what happens under the hood anyway, except that the second
> way avoids one additional Object (a StringBuilder) being instanciated.
>
> Better yet, you can do your comparision with the char primitive:
>
> char c = ke.getKeyChar();
>
> if( c != ' ' ){ // double quotes quote Strings, single quotes, chars
> buffer.append( c );}
>
> else{
> System.out.println( buffer.toString() );
> buffer.setLength( 0 );
>
> }
>
> --
> DF.
> to reply privately, change the top-level domain
> in the FROM address from "invalid" to "net"- Hide quoted text -
>
> - Show quoted text -
Thanks very much Daniele. I've learned alot from your posts. Thanks
for your time...
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--- Synchronet 3.15a-Win32 NewsLink 1.92
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