JavaFX 2.0 :: Remove All Listeners And / Or All Bindings?
Jun 17, 2014Is there any way in JavaFX 8 to remove all change/invalidation listeners on an observable? And is there any way to remove all bindings on a property?
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JavaFX 2.0 :: Predicate Bindings - How To Prevent Rebuilding Them For Each Iteration Of FilteredList
Dec 4, 2014We're twisting our minds how to use predicate bindings correctly in the real world, i. e. beyond the trivial examples for FilteredList using simply static code but no bindings!
The problem is that our predicate must be bound to a chain of BooleanBindings, of which the final term needs the item injected into the predicate by the FilteredList. Example see purple code:
BooleanBinding a = ...
StringBinding b = ...
ObjectBinding<Predicate> c = Bindings.createObjectBinding(() -> item -> a.or(b.isEqualTo(item.someProperty())).get(), a, b); // Ugly: No "Bindings" style!
myFilteredList.predicateProperty().bind(c);
This code has an ugly smell! It first looks like "Bindings" style, but in fact is plain old lamba mostly! But it also is slow: The code enforces splitting of a and b into separate bindings as it enforces rebuilding the chain a.or(b.isEqualTo(...)) for each single iteration of titem in turn. That induces unnecessarily creating and garbage-collecting Bindings "on the fly", which is not how Bindings are intended -- they shall be created once and simply update their value instead of getting replaced themselves to prevent wasting CPU cycles and keep memory clean.
How to do Predicate Bindings correctly (i. e. without temporarily building Bindings for each "t") ...
JavaFX 2.0 :: How To Remove Symbol In Linechart
May 21, 2015This is linechart using javafx. I want to remove the point. I just can remove the text "Data" but can not remove the orange circle symbol.
View Replies View RelatedJavaFX 2.0 :: Remove Style From Component?
Oct 28, 2014I am using the Javafx 8 Date Picker. Its works fine. I have defined a stylesheet for my application and in that style sheet i have a style for Button. I apply this style to the every scene. Now my question is: When I use the datepicker and I click on the calendar icon, the datepicker popup appears and the left and right arrows adjacent to month and year fields in the seems to pick the style of the button class from style sheet defined in my application., Is there a way to avert this and tell datepicker to use default styles and not the styles defined my application.
I tried removing the style at runtime from the scene, but of no use.
Delay Using Key Bindings
Jan 2, 2014I got Key Bindings for a game I'm working on. They're supposed to move objects when keys are pressed.
(currently, each println(..) represents actual code to move things on the screen, will be added later).
The printing in the console works, but with delays. The words "left", "right", etc. appear with a delay in the console, sometimes half a second delay, sometimes a few seconds delay.
There is no delay at all sometimes, but when a lot of keys are pressed one after the other, there's a delay of several seconds, and only then the words suddenly appear in the console (like the computer had too much to handle at the same time).
When I did the same Key Bindings in a different project without all the game logic, only pressing buttons that print words in the console - it worked perfectly without delay.
So I suspect the problem is something with the game code, or the way I used Key Bindings inside the game code.
I tried putting the Key Bindings code in the thread that contains the game-loop (before the game-loop), and in the constructor. Same problem.
Here is the relevant code of the Board class (extending JPanel), the main JPanel of the game which displays the graphics and manipulates objects.
Java Code:
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Board extends JPanel implements Runnable {
Tank tank1,tank2;
boolean[] keysPressed1,keysPressed2;
[Code] ....
As I said, I suspect the program demands too much of the computer, so pressing a lot of keys one after the other, freezes the program for several seconds, and then suddenly prints the words on the console.
How To Add Listeners In A Object
Apr 27, 2014I am having some issues with my GUI. I have a UserList GUI (not finished) that, on button click, will check for an open chat window and open a new window if none exists or add a tab if one does (this is working fine). My issue is that the listeners I added to my chat window only work for the last tab added. If I switch back to a previous tab, I can no longer use my input textField and send button to write to my textArea. I add listeners when I initially create the window and first tab. I thought about adding ChangeState listener, but couldn't work out how it would be any different than what I am doing now. Do I not fully understand how listeners are added to a particular object?
I will post my code for the whole class so you can get the full picture.
Java Code: public class Chat extends JFrame{
private JPanel tabPanels, mainPanel;
private JTextArea chatArea;
private JTextField inputArea;
private JButton send;
private JTabbedPane tabPane;
private JScrollPane scroll;
private String name;
[Code]...
How To Reference Action Listeners
Mar 15, 2015I am making an MVC program and I am not allowed to put the action listeners in the view class. I was able to get one button working fine but since I am unable to reference them I cannot give them both individual responses.
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Controller {
HobbyList model;
ListView view;
[code]....
MVC Layout - Adding Listeners?
May 4, 2014So I'm doing a basic MVC layout for a pretty basic game that I am making in order to understand the whole MVC layout. The game requires the user to move up/down/left/right via JButtons on the GUI. Since I'm using an MVC layout and my buttons are in a different class than the ActionListeners, I was wondering what the best way to add the action listeners are?
Method 1:
View Class ActionListener method:
Java Code: public void addMovementListeners(ActionListener u, ActionListener d, ActionListener l, ActionListener r){
moveUp.addActionListener(u);
moveDown.addActionListener(d);
moveLeft.addActionListener(l);
moveRight.addActionListener(r);
[Code] ....
Which method is better? Is there another method that is even better than these two? Trying to get this MVC thing down.
ATM Machine - Action Listeners
Mar 27, 2014My output is all over the place. I cancelled out the borderlayouts beneath each panel I created and it completely changed the output, and I'm not sure why. The first photo below, shows what it looked like with the layouts and the second shows the output without. I still don't understand why I don't see the digits 1-9.
Java Code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
public class Atm extends JFrame {
Atm(){
super("ATM");
//Create Panels For ATM
JPanel buttonPanel1 = new JPanel(); //To Contain Digits 1-9
[Code] ....
Why would setting the layout beneath each object change the layout so much? I stayed consistent in my use of BLayout and GLayout in the program.
How To Use Event Listeners In Java
May 6, 2014How the event Listeners work in java,To get the data based on the event occurs in outside the application. I have this method in one of my API class I am not understanding how this methods are going to work.
public interface SBXPCXMLEventListener {
public void OnReceiveEventXML(String eventXML);
}
private static List<SBXPCXMLEventListener> listenerList = new ArrayList<SBXPCXMLEventListener>();
protected static void fireXMLEvent(String xml) {
[Code] ....
I have done like this.This is used to capture the events from the fingerprint machine when run this class I am not getting any data from the machine when i did thumb impression in the machine.
public class EventListnere implements SBXPCXMLEventListener {
public static void main(String[] args) {
boolean flag = SBXPCProxy.ConnectTcpip(1, "10.0.0.8", 5005, 1234);
System.out.println("flag = " + flag);
// SBXPCProxy.st
[Code] .....
Swing/AWT/SWT :: MVC Layout - Adding Listeners?
May 4, 2014So I'm doing a basic MVC layout for a pretty basic game that I am making in order to understand the whole MVC layout. The game requires the user to move up/down/left/right via JButtons on the GUI. Since I'm using an MVC layout and my buttons are in a different class than the ActionListeners, I was wondering what the best way to add the action listeners are?
Method 1:
Swing/AWT/SWT :: Multiple Action Listeners?
Oct 25, 2014So im making a calculator just basic 4 function with a clear button. as i am working into this project i am running into an issue of assigning which click sets what. For instance i click the two button how do i tell it to assign it to firstNum, versus secondNum?
private class theHandler implements ActionListener{
public void actionPerformed(ActionEvent event){
if(event.getSource()==one){
firstNum=1;
}
if(event.getSource()==two){
secondNum =2;
}
if(event.getSource()==three){
secondNum =3;
}
So this for instance allows me to set one to the firstNum and then add it to two or three but im not sure what to do next. I have in my mind i want to do something like make three listener classes, that operate in sequential order like you pick the first numbers, click an operation, and then select the second numbers then hit the operation(equal) button to display answer. Am i on the right track or what?
Swing/AWT/SWT :: Action Listeners - Pizza Ordering GUI
Dec 3, 2014I've got the layout put correctly but I can't seem to get my action listeners to work correctly.
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class PizzaOrderDriver
{
public static void main(String[] args)
{
JCheckBox show1;
[Code] .....
Set Listeners Of Cells To Save Information Of Entire Table After Modification
Aug 18, 2014I am having trouble with a jTable that I am using. I have set the listeners of the cells to save the information of the entire table every time they are modified, but run into the problem that the last modified cell does will not reflect its most recent value. The value will display visually, but not show up when I try to read from the cell. I have tried wrapping the saveProcGuide() call in swing's invokelater, but to no avail. I have marked the area where the problem becomes evident (values returned do not match those present in the visible table object). Below is the offending code:
// This is where I set up the listeners
private void addProcGuideWithValues() {
procTableModel.addRow(new Object[]{"", ""});
// document listener to be fed into editor/renderers for cells...
DocumentListener docuListener = new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
saveProcGuide();
[Code] .....
Remove Item From Table?
Jul 11, 2014I'm trying to make a calendar that, when you click on the date, the result are stored in a map and visualized in a table that refers to a container.
I successfully created the map mechanism, but I have a problem on the list....
I add the rows in this way:
Object newItemId = container.addItem();
Item riga = container.getItem(newItemId);
riga.getItemProperty("Timestamp").setValue(fara);
riga.getItemProperty("Date").setValue(asa);
.
How can I delete a row in the list, when all I have in input is the "Timestamp" information, in a Long value?
BTY, I'm using NetBeans with Vaadin extension
LinkedList Remove Method
Apr 12, 2014My remove(item E) method is working fine if I remove an item that is in the list. However, it has an error when I try to remove an item which is not on the list!
Linked List Class
import java.util.NoSuchElementException;
public class LinkedList<E>
{
private Node<E> head; // head node of the list
private int size = 0; // number of elements that have been added to the list
// Returns the element at a specific list index.
// Big-O: O(n) (due to the nodeAt call, which must traverse the list)
public E get(int index)
[code]...
How To Remove Value Or Highlighted On Click
Jan 16, 2015I want my jSpinner value "0" to be removed on button click. and I want my jSpinner and jFormattedTextfield and jTextfield value "0" to be Highlighted(e.g: like highlighted by mouse double click) on button click.By removed I mean: nothing to be in the jSpinner. empty as any textfield. the jSpinner default value is 0 and on Click I want the value of the jSpinner to be removed and Highlighted, I need both examples code.
View Replies View RelatedButtons To Add And Remove 1 Ball
Apr 29, 20151. BALL
import javax.swing.Timer;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Ball extends JPanel {
private int delay = 10;
private Timer timer = new Timer(delay, new TimerListener());
private int x = 0; private int y = 0;
[Code] ...
How To Add And Remove From Arraylist Through Different Class
Mar 13, 2014Right now i am working on some java using BlueJ and trying to insert and remove data from an arraylist through a public class or from a new class.
I want it to have it as like a database were you can add and remove data but have a limit of storing.
How To Remove ActionListener From All Of Buttons At The End
Mar 18, 2015How can I remove the ActionListener from the buttons of my application after i have got something happen.
Please consider the following application:
Java Code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Exer1218659 extends JFrame {
private String[] textButtons;
private Container contents;
[Code] .....
After the line 37 executes I expect that the ActionHandler (ah) will be removed from all of the buttons but this do not happen, then all the remaining button still responding to the clicks. Where is the problem in my code.
Code Won't Allow To Remove Integer
May 7, 2014My program gives me an error when I try to "digUp" the purse. The error appears in the purse class.
import java.io.*;
public class Purse
{
//Fields
public double gp;
public double gold;
public double silver;
public double copper;
public double platinum;
public static final double GOLD_VALUE = 1;
[Code] ....
In the digUpPurse() method, it tells me
java.lang.NullPointerException
null
What this means.
How To Remove Possible Suffix / Return More Than One Value
Mar 19, 2015I have a prob with my coding..Here it is :
private boolean chk_akhiran(String pkata) {
String tempkata = new String();
boolean wujud = false, status = false;
{
for (int i = 0; i < akhir + 1; i++) {
tempkata = Suffix[i]; // list of suffix that possible to be removed
[Code] ....
Example : "katakan" will produce "katak" but at the same time possible root word that can be produced is "kata"
in Suffix [i] i have a suffix "an" and "kan"..it's stop when meets suffix "an" bcoz "an" is above "kan" in a list .. How to get another possible root word....
Add Or Remove Will Be More Efficient By A Linked List
Jan 31, 2015if one address point on another address. so set and get methods will be less efficient then an array, but add or remove will be more efficient by a linked list ? a linked list also inherit from queue so if i add an elemnt via "addFirst" function . where its adding the element ? to the right most or left most ?
if i have for example :
here [ ] --> [ ] --> [ ] --> [ ] -->[ ] or here
linked list its FIFO so the head will be the right most ?
Edit : its confused me a little bit but i understood now .so it will be at the left most. its actually ordered . not like the stack which is LIFO.
Remove Multiple Elements From ArrayList?
Dec 27, 2014I have an ArrayList of tens of thousands of elements, and want to remove the items at a given set of sorted indices like {1,5,29,318,499,583}. It seems like this operation could be performed in linear time and space by first finding a cumulative sum of the shifts needed to move everything to their right positions and then shifting every item. On the other hand, removing and shifting one by one would seem to require many more shifts. Is there a way to do this in Java's ArrayList?
View Replies View RelatedSwing/AWT/SWT :: How To Remove Jtable Border
Apr 26, 2015How can I remove the light blue border? I tried everything that I know [URL]
View Replies View RelatedNetbeans - How To Remove Added Library
Feb 13, 2014I'm just a java beginner. I've spent a lot of time installing and configuring software. I'm using Netbeans 7.3 on Windows 7, 64 bit. Recently, I downloaded opencsv from sourceforge.
With no previous experience adding libraries, I read a blog post on adding the library. I think that I then:
Start a new project.
Right click on libraries
Add jar/folder
Gave the temporary path to the .jar file
After, I read the blog post again, and realized I'd missed it. This time I did:
Right click library, Add library, Create library
However, I kept getting a message that the same library already existed. If I do the first process above, I will find the same library.
However, I see no way in Netbeans to remove it. I've deleted the test projects. And started a new one. But the library now exists for all projects it seems.
I've grepped all the files under the Netbean directory, searching for "opencsv", but found nothing. The only things in the Windows registry were locations of files.
How can I delete this library permanently from Netbeans? Short of, uninstall, then reinstall? Is there a way to list all the libraries that Netbeans has?