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Event Listener for a Vector or for an array 14 Years Ago by niranga Hi All, Is it possible to bind an array or a Vector with a event listener? For an example if we add an element to the Vector or remove from the Vector, can I use an event listener to track the changes? Thanks a lot in advance. Cheers..!! Event Listener on ArrayList 14 Years Ago by SCass2010 Hi everyone, I have an ArrayList containing 40 or so JPanels for a board game developed in Netbeans with java - is it possible to have an event listener or something similar that will "monitor" the ArrayList for any of the JPanels being clicked, rather than having to create an event for every JPanel there? Many thanks in advance! :) Jpanel event listener 15 Years Ago by adam291086 …, i am trying to add a keyboard event listener to my Jpanel. But i am having no…java.applet.Applet; import java.awt.*; import java.awt.event.*; import java.awt.geom.*; import java.awt.image.…import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; public … As3IsoLib Event Listener for Boxes 12 Years Ago by 3.5.0-17 … unit (where you can move to). I've added an event listener for all the boxes to call to, passing which box… the four boxes the 'TileClicked' function gets executed by the event handeler and it moves the player. I tried adding the… event handler when I was defining all the boxes at the … How to create event listener function (charts) -- javascript 11 Years Ago by missy786 I am trying to create a event listener function, which can render table from drawVisualisation(), when the page ….events.addOneTimeListener(dashboard, 'ready', function () { // create a "ready" event handler for the dummy // this fires whenever the user interacts… Re: Event Listener for a Vector or for an array 14 Years Ago by hfx642 How do you add/remove elements from the Vector? Don't you have to do that programatically? So... You know WHEN it is happening, why would you need a listener? A listener "listens" for events that you don't know when they will occur. (Like a user; pushing a button, checking a box, or selecting a radio button) Re: Event Listener for a Vector or for an array 14 Years Ago by JamesCherrill Yes, that explanation clarifies it. DefaultListModel sounds ideal - it supports a Vector-like data model and was designed for the JList GUI component to track its changes, but the Listener design pattern it uses will work for any other class that wants to know about changes. I doubt you will find a (much) better solution. Re: Event Listener for a Vector or for an array 14 Years Ago by JamesCherrill … addListener(...) method and overrides add() etc to broadcast the change event forwarding the change to the the Vector. This is basically… Re: Event Listener on ArrayList 14 Years Ago by mKorbel …/tutorial/uiswing/events/mouselistener.html[/url] for storing/identify clicked event please reads this thread [url]http://www.daniweb.com/software… Re: Event handlers: which event class and which event listener interface 11 Years Ago by JamesCherrill … Ps with Java 8 lambdas allow you to define a listener in a single concise expression http://docs.oracle.com/javase… Event handlers: which event class and which event listener interface 11 Years Ago by Violet_82 … down to 1)which interface the class that represents the event handler implements (ActionListener,ItemListener etc) and 2) what type… so far I know that if I want to implement event handling for, say, a textField, the inner class (or… as yet) implements the ActionListener interface and that the event passed on to the class method is and ActionEvent. … Re: Event handlers: which event class and which event listener interface 10 Years Ago by Violet_82 …'t for the table in the tutorial telling me which event is supported, I would be completely lost Re: Jpanel event listener 15 Years Ago by adam291086 …; import java.applet.Applet; import java.awt.*; import java.awt.event.*; import java.awt.geom.*; import java.awt.image.ImageObserver; import….JPanel; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; public class board… Re: Event Listener for a Vector or for an array 14 Years Ago by niranga Hi all, @hfx642 Actually I am using 2 classes who shares the Vector object. When the second class updates the Vector. I need to track the updates of the Vector from the first class. [CODE] // Has a Vector instance variable called vFirstClass; FirstClass c1 = new FirstClass(); // This instantiation will be done in a method of FirstClass… Re: Event Listener for a Vector or for an array 14 Years Ago by niranga Hi JamesCherrill, Thanks a lot for the knowledge :) I will try it as soon as possible and get back to you Thanks again :) :) Cheers..!! Re: Event Listener on ArrayList 14 Years Ago by SCass2010 So basically I could have something like [CODE] for (int i = 0; i < ArrayListOfJPanels.size(); i++) { if (e.getSource() == myButton[i]) { // code here } } [/CODE] and it would pick any mouse clicks on the JPanels within the ArrayList? Re: Event Listener on ArrayList 14 Years Ago by mKorbel yes myPanel[i] = new JPanel myPanel.addMouseListener(myMouaeListener) myPanel...... . . . MouseListener myMouseListener extends MouseAdapter { for (int i = 0; i < myPanel.size(); i++) { please check that, cos I write that from "memory by born instaled in my head" Re: Event Listener on ArrayList 14 Years Ago by SCass2010 Yeah starting to get an idea of what I need to do now thanks... Still a bit confused but I'll give it a shot!! :S Re: Event Listener on ArrayList 14 Years Ago by SCass2010 OK one last, if slightly crazy, question... I have an ArrayList containing up to 6 players. To display the details of the 6 players I have a set of textboxes and labels set up like this [CODE]this.jLabel1.setText(players.get(0).getName()); this.jTextField1.setText("£" + players.get(0).getBalance()); this.… Re: Event Listener on ArrayList 14 Years Ago by Ezzaral [B]> or am I trying to do something that is either impossible or close to impossible[/B] Not at all. You should definitely use a loop to create all of those components. They only differ by the player index. You could also use a for-each style loop[CODE]for(Player p : players){...}[/CODE] Re: Event Listener on ArrayList 14 Years Ago by mKorbel hmmm and for numeric value look for (for numeric allows only NUmber Instance) [url]http://download.oracle.com/javase/tutorial/uiswing/components/formattedtextfield.html[/url] maybe you need add new 4 lines for that hmmm stop what's [CODE]playerDisplay pd = new playerDisplay();[/CODE] Re: Event Listener on ArrayList 14 Years Ago by SCass2010 Hi, Sorry again but a bit stuck.... I have my Game now creating a JPanel containing the player details for each player in the game when it first starts [CODE] private void createPlayerDetails() { // For each player, create a PlayerDetails JPanel and add it to the ArrayList; // Then add the current PlayerDetails JPanel to the … Re: Event Listener on ArrayList 14 Years Ago by Ezzaral Doesn't your PlayerDetails panel keeping a reference to the Player object that it is displaying? There isn't any reason to remove the panel. Just update the info that it is showing by getting the values from the player object. Re: Event Listener on ArrayList 14 Years Ago by SCass2010 Yeah thats the thing I don't really understand but :S the PlayerDetails Panel has a variable Player that I set to the Player that is passed to it, but does that not just store a sort of screen shot of that Player objects details when it was passed? Or is it just sending an address reference, so if i create an update method within the PlayerDetails… Re: Event Listener on ArrayList 14 Years Ago by Ezzaral It is a "live" reference to the Player object itself - not a snapshot. Any data that your panel gets from the object will be current. Re: Event Listener on ArrayList 14 Years Ago by SCass2010 Ah yes, I get it now thanks finally got it working! Think I was just over complicating things in my head :P How can an Action event cause a property change in the parent? 15 Years Ago by eggmatters … method in my Main Form class. There is an action event listener associated with the button on the datatable form. Provided is… to main now. I figure I need some type of event listener in the function that instantiated this object that is invoked… How Do I find out who fired the Event? 15 Years Ago by eggmatters … by setting setCellSelectionEnabled(true) and adding the following to the event listener: [CODE]private class selectionListener implements ListSelectionListener { public void valueChanged(ListSelectionEvent… me. So, I think that the listener just knows that it is a cell selection event and is not concerned about the… A doubt in SWING event handling 17 Years Ago by parthiban … if we want to handle an event for a event source(say JButton) we should implement corresponding Event Listener(say ActionListener) . I also understood… that we should register the Listener with that event source. With that knowledge… What listener to use for my Program 12 Years Ago by arcticman452 … don'T know if I should use an action listener or an event listener for my JComboBox. I have 4 JComboBoxes and only… far: import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.text.*; import java.util.*; public…