I 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 RepliesHow can I view the specific class I highlighted like in the netbeans? I tried everything I see on the google but it just creates the folder and copy the files from here "C:Program FilesJavajdk1.8.0_25docsapi" not within the folder of java/javax.
View Replies View RelatedIf I put the highlighted text in try/catch block it is throwing NullPointerException , if I am using command line arguments then also it is showing the same exception.
public static void main(String []args)
args = null;
args[0] = "test";
System.out.println(args[0]);
I'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
My 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]...
1. 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] ...
Right 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 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.
My 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.
I 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....
Is it possible to programmatically simulate a click event on a tab (JTabbedPane) to trigger its changeListener once a button is clicked ?
View Replies View Relatedi have two classes, one is a GUI program and the other is an index writer program. the GUI program uses a j file chooser to select directories and display them in the text fields.the index writer is supposed to take the directories in the text fields and read from one(document location) and write into the other(index location) i want to run the index writer program by the click of a button(indexfbuton) in the gui programi have been able to get the directories to display in the text field but when i click the button to run the index writer class, nothing happens..here is the GUI class
package upload1;
import upload1.IndexFiles;
import java .awt.*;
import java.awt.event.*;
[code]....
I have been trying to develop a small desktop application. I have JFrame and a button. When I click the button, the app is supposed to save record to database. But it is impossible to click the botton twice. To explain in detail: when a user fill in the form and click the button, the app will warn the user if he/she haven't fill in the appropriate JTextFields. After warning it is impossible to click the button again. I mean after first click, the button is busy and impossible to click.
import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
[Code] ....
if 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.
I 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 RelatedHow can I remove the light blue border? I tried everything that I know [URL]
View Replies View RelatedI'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?
I basically need to allow the user to add or remove toppings on the pizza once it is created. I am new to code (steps included). We are supposed to use enums and sets.
package pizza;
public class Pizza {
// Declare enums
public enum Size{
SMALL,
MEDIUM,
LARGE,
JUMBO
[code]....
I started this this is what I have currently I have an error here:
private Set<Topping> setOfToppings = new EnumSet<Topping>(Topping.class);
I am sure it is because I haven't set it up correctly.
Is there a better way to remove null values from an array than what I have tried? This works just fine, but I just get the feeling that there is a better way to do this, without using the JCF.
private static String[] removeNullValues(String[] list){
int count = 0;
for(int i = 0; i < list.length; i++){
if(list[i] == null)
count++;
[Code] ....
I technically dont need to remove the null values for the project that I'm working on (since I just print it out and I can avoid null values with a simple statement like
if(update[i] != null) SOP(update[i])
),
but I'm just curious.
How to remove multiple objects that are onscreen in a java graphics program(specifically the one from the acm library). The clearAll works fine but I would like to keep the background in my frame. I just want to be able to do something like removing all the trees by typing in a phase into a console program. Here is a small snippet of code with details of what I am trying to achieve.
Java Code:
public void command(){
Dictionary dic=new Dictionary();
//dic list of all phases that will either make animations or remove things in a graphical window
String line = readLine("Type here: ");
if (line.equals(dic.clearActions[i])) {
cleared=true;
[Code] ....
I have a client server application. The UI for the server contains a JTable and in each row, details of the connected client are shown. Say if I have 5 connections and the 3rd connection disconnects, I need the 4th and 5th connection details to be displayed in 3rd and 4th row respectively. Can this be done?
View Replies View RelatedI'm writing the remove method, where you insert the key and it searches the key, if the key is found you remove the value inside the table and return that value, if they key is not found you return null. I did this method but is not returning anything in the main so I try to print inside an if to see if it was entering the condition and it appears to be looping, I'm using arrays because its an assignment
public V remove(K k) {
int key = funcionHash(k);
V key2 = (V) tabla[key].value;
int intento=1;
if(this.estatus[key]==1){
while(intento<this.tabla.length/2){
if(this.tabla[key].key.equals(k)){
[Code] ....
I need to figure out how to calculate the remove method complexity in the worst best and average case same as the insert method
public void insert(String Word)
{
size++;
int pos = myhash(Word);
WordNode nptr = new WordNode(Word,null);
if (table[pos] == null)
table[pos] = nptr;
[Code] .....
This 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 RelatedIs 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?
View Replies View RelatedI 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.