Which listener should I use?

Now I want to listen the JFrame's location changing event. Which listener should i use?

Add a ComponentListener to the JFrame

Similar Messages

Which listener should be used for JTextArea

Hi,
I need to add a listener for JTextArea particualy when
the text in the jtextarea is changed. I don't think
mouse listener is enough, since the user can use tab to
get to the jtextarea and edit the text. In this case,
which listener should I use. Sample code would be
helpful.
In addition, I have a problem with the jtextarea that
when user uses tab to go to different gui components,
such as jtextfield, jcombobox, jtextarea, jlist, etc, the
tab stays in the jtextarea and keeps appending to it. It does
not go to next component, such as jlist. How can I make it
work?
Thanks in advance,
Pin

It doesn't work. Are you using 1.4 or 1.3? I am using
1.4.
In the 1.4 API, it says that isManagingFocus is
"Deprecated".
Here is what I have:
JTextArea descrptArea = new JTextArea() {
public boolean isManagingFocus() {
return false;
descrptArea.setRows(3);
descrptArea.setLineWrap(true);
descrptArea.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
// DO SOMETHING
I found the following code which says it will do it.
However, I got the exeception:
java.lang.ClassCastException:
n: javax.swing.KeyStroke
at java.util.TreeMap.compare(TreeMap.java:1081)
at java.util.TreeMap.put(TreeMap.java:459)
at java.util.TreeSet.add(TreeSet.java:205)
Set forwardTraversalKeys = new TreeSet();
forwardTraversalKeys.add(KeyStroke.getKeyStroke('\t'));
forwardTraversalKeys.add(KeyStroke.getKeyStroke(KeyEven
.VK_TAB,
InputEvent.CTRL_MASK));
textArea.setFocusTraversalKeys
(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
forwardTraversalKeys);
Set backwardTraversalKeys = new TreeSet();
backwardTraversalKeys.add(KeyStroke.getKeyStroke(KeyEve
t.VK_TAB,
InputEvent.SHIFT_MASK));
backwardTraversalKeys.add(KeyStroke.getKeyStroke(KeyEve
t.VK_TAB,
InputEvent.SHIFT_MASK |InputEvent.CTRL_MASK));
textArea.setFocusTraversalKeys(
KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
backwardTraversalKeys);
Any idea???
PinI'm not using 1.4 but the class cast exceptions look like they come from : Set forwardTraversalKeys=new TreeSet() etc
try : TreeSet forwardTraversalKeys=new TreeSet()
you cant cast from a Set to a TreeSet because a TreeSet is a Set but a Set is NOT a TreeSet.
hope this helps.

Which listener should be used in a standalone grid infrastructure env?

gurus:
I installed a 11.2.0.2 standalone grid infrastructure on a linux box and created a database manually. I then used netca to create my listener which created 2 listener files:
a. under my DB home:
aml6:/u00/app/oracle/product/11.2.0/dbhome_1/network/admin > cat listener.ora
# listener.ora Network Configuration File: /u00/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER_ETL =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = aml6.lynk.lynksystems.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
ADR_BASE_LISTENER_ETL = /u00/app/oracle
b. under my grid home:
aml6:/u00/app/11.2.0/grid/network/admin > cat listener.ora
LISTENER_ETL=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_ETL)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_ETL=ON # line added by Agent
I observed that the one under my DB home was the one that really got used when I tried to logon to a database.
Here are my questions:
1. what is the use for the listener under my DB home?
2. what is the use for the listener under my grid home?
3. the grid infrastructure document says that the default home for listener and tnsnames files are grid home, however, it seemed that I have to use the listener under my db home directory.
4. which listener is the ASM instance use?
Thanks a lot for your help.
dz

Raj Mareddi wrote:
Thanks Levi and Sebastian.
We have separate listeners in DB homes for Stand Alone grids.
Cluster Grids have got the listeners (SCAN..etc) running out of Grid Home. Still, we have exceptions for the Cluster grid for EBS databases where SCAN is not supported yet and still have a separate listeners for the databases.
This OTN doc also describes a listener in the DB home: http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/11g/r2/prod/install/gridinstss/gridinstss.htm
Hi Raj,
In this OBE, the author explains why he is setting a new Listener for ASM.
To Configure EM Database Control to manage ASM, perform the following steps:
To manage the ASM instance in Enterprise Manager Database Control. you must configure the ASM Instance as a target.
When you configure the ASM target, you must provide the port for the ASM listener.
The Grid Infrastructure installs a listener by default on port 1521, and configures the ASM instance to use this listener.
In this tutorial the database is already installed and has a listener configured on port 1521, the Grid Infrastructure places a listener on port 1522 and the ASM instance is registered with the grid listener.Before Install Grid Infrastructure he already had a database running with the Listener configured and running.
To ensure that the service of ASM will be registered in the Listener of same release he set a new Listener using GUI HOME.
This procedure is correct because the Grid Infrastructure (ASM) is the highest release (So, it's necessary configure Listener in same release), to not use a Listener with prior to release of the Grid Infrastructure(ASM) he created new Listener.
He also could deconfigure the Listener of Oracle Home (database) and configure in the GUI Home. It's a matter of choice.
Observing requirement of the paragraph below, we can set listener from anywhere there is no restriction, it is a matter of best practices only.
The release of the listener must be the same as or later than the latest release of all Oracle databases being serviced through the listener.Cheers,
Levi Pereira
Edited by: Levi Pereira on Nov 8, 2011 4:23 PM

Which listener should it be running?

When Grid Control Management Service is installed, it starts a listener. Provided that there is a database on the same box, then it has also a listener. Which listener should we be using? Should we be using the OMS listener and shutdown the database listener?
Thanks,
Mustafa

You should find the answers here:
C:\Java\Tomcat 4.1\webapps\tomcat-docs\servletapi\index.html
Most of them say it in the top of their description if they are required to be declared in web.xml
Never heard of a ServletRequestListener, or a RequestAttributeListener

I am a student and need to do my assignments in word. Which application should I use as I have to save all of them in older word version like 2003 to send it to my teacher?

I am a student and need to do my assignments in word. Which application should I use as I have to save all of them in older word version like 2003 to send it to my teacher?

You could use Microsoft Office for Mac, but I would recommend iWork! It's a better set of applications for a much better price. I have used both and I prefer it over Office. And Pages can not only open Word documents, you can also save documents in Word format. My brother and I both used iWork as an Office substitute when we were in college (I graduated a few years ago and he just graduated last night) and haven't had any compatibility issues. Check it out here http://www.apple.com/iwork/

I have down loaded Aurora,Beta4,firefox. Which one should i use

I have down loaded Aurora,Beta4,and Firefox. Which won should i use.'

That is up to you to decide. For some details about the different versions see https://developer.mozilla.org/devnews/index.php/2011/04/07/new-development-channels-and-repositories-for-rapid-releases/
If you have not used to testing software you should stick with the release version (Firefox 4.0.1).

Which CPU should I use

Hello,
our company want to buy new computers for the developers.
We have to use Windows XP as our OS because of third party products.
We develop J2SE + J2EE.
So my question:
Which CPU should we use?
I searched at google but didn't found any usefull sides about benchmarking an J2SE VM or J2EE VM.
Intel or AMD?
Are there some issues to be regarded?
Is the behavior of the VM different if you use an Intel or an AMD? (X86)
Our AppServer is JBoss 3.2.3.
Has Intel ore AMD some magic improvements for the SUN Java VM?
Any answer would be appreciated.
Thanks,
Oliver

Olli_ger,
Thanks for asking. To add more to the question, what about dual- and
multi-processors, such as Opteron 2xx and 8xx processors?
That is, can, and to what extent, does the Java compiler and the JVM
utilize multi-processors? And how is this done? Threads parceled out?
Using what algorithms? Are there "best practices" for writing code
that can exploit these chips?
Given the recent emergence of dual-core processors from both AMD and
Intel I would think Sun would have a white paper on this, but I've not
been able to find anything.
As I'm about to build a new system, and am looking at a dual processor
board that could take two dual-core chips, I'd really like to know.
Thanks again for opening the issue.
-BC

Which application should i use to install facetime

which application should I use to install facetime?

You can save the DMG file for Mac to the desktop and install the Firefox application.
* [[Installing Firefox on Mac]]
* http://kb.mozillazine.org/Installing_Firefox#Mac_OS_X

I want to convert a pdf file into xml.Which programme should I use and how do I access it?

I want to convert a pdf file into xml.Which programme should I use and how do I access it?I am based in India.

Hello,
if you create your doc files by the help of WORD, you could use a Microsoft add on (it depends of your WORD Version).
Hans-Günter

Which situation should we use the text item with the item category TATX

Dear experts!
Thank you for your attention!
I am confused with text item (TATX).
which situation should we use the text item with the item category TATX????
Someone told me that the text item is dummy and should be used as a manual of certain standard item. But the manual may be a book or several papers and it also takes up some inventory not a dummy.
So, could some body tell me what the text item (TATX) exact is and what function it has.
Best regard!
Tangdark

Hi,
you can use TATX if you like to enter a text and to print some information between the item lines.
Regards
William

To create a web page which application should I use?

I'm a graphic designer who works with illustrator, indesign and photoshop. To create a web page which application should I use?

Muse (aimed at novices) or Dreamweaver (aimed at web professionals familiar with web code)

Which object should i use ?

Hi,
I have a methode that returns several values of different types. Which objet should I use to return these values ? I thought of Vector but somebody told me that there is a better object than Vector.
thanks for your help !
Tex

First, always use an interface over an object if it exists. So, your code should always declare the instance variable as List, not ArrayList or Vector or LinkedList. This allows the implementation to be optimized for the task at hand (e.g. LinkedList for arbitrary insertions or deletions of data, ArrayList for better Iterator performance, etc.) while using the interface for the common List methods (e.g., get(), add(), remove(), iterator(), etc.)
Second, avoid Vector. Sun specifically states in the Collections tutorial that ArrayList is preferred over Vector.
- Saish
"My karma ran over your dogma." - Anon

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which driver should i use for the epson LX300 matrix-dot printer??? I dowloaded all drivers for epson but i didn't find the driver for the LX300.
I bought an i mac not so long ago, can anyone help me about this?

i use parallels desktop 7 because i use a program for work with windows XP. Is there really no solution?

Which forum should I use if I have JSP questions?

Hi, pals!
Which forum should I use if I have JSP questions?
Cheers,
George

http://forum.java.sun.com/forum.jsp?forum=45

When i want to rent a movie i have to enter a passwo. which password should i use ?rd

when i want to rent a movie i have to enter a passwo. which password should i use ?

You rent via itunes so your itunes password.
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jules

Which listener should I use?

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