JavaFX 2.0 :: Update Observable List From Database At Certain Time Intervals Using Threads?
Dec 9, 2014i have a table UI and want it to be to be in sync with tabledata in the database... How can i go about it?
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JavaFX 2.0 :: Modifying Item In Observable List Doesn't Update ListView
Oct 3, 2014I am using:
Java:..... 1.8.0_20JavaFX:... 8.0.20-b26
I have this class:
public class Person {
private SimpleStringProperty name;
public SimpleStringProperty nameProperty(){
if(this.name==null){
this.name=new SimpleStringProperty();
[Code] .....
I have this:
lista = FXCollections.<Person>observableArrayList();
lista.addAll(new Person("uno"),new Person("due"),new Person("tre"));
myListView.setItems(lista);
The problem is if I add /remove an item all is fine, the listView refreshes correctly:
Person p = new Person(tfld_textAdd.getText());
lista.add(0, p);
But if I change a value on an item into the observable list it doesn't:
lista.get(0).setName("new value");
I also have a table linked in the same way and the table workd correctly after I updated my Java version...
JavaFX 2.0 :: Thread Updating Observable List That Is Viewed By UI Component
Jul 18, 2015I have the following application scenario:
a) I have an observable list L
b) I have a thread periodically adding to L
c) I have a UI component monitoring changes in L and updating some view.
At present my thread adds to L by doing a platform.runLater. I find that a little clunky (not sure why, just seems it).
Are there any other recommended ways/petterns to keep my UI view in synch with the list, other than the above approach?
Write A Java Program To Read Time Intervals
Feb 23, 2015Write a java program to read the time intervals (HH:MM) and to compare system time if the system time between your time intervals print correct time and exit else try again to repeat the same thing. By using StringToknizer class.
View Replies View RelatedProgram To Read / Compare Time Intervals - Showing Wrong Output
Feb 24, 2015the below program is to read the time intervals (HH:MM) and to compare system time if the system time between your time intervals print correct time and exit else try again to repeat the same thing. By using StringToknizer class. and i have written like this
import java.io.*;
import java.util.*;
public class Main
{
static int k1,k2,v1,v2;
public static void main(String args[]) throws IOException
{
DataInputStream o=new DataInputStream(System.in);
[Code] ....
but is showing correct for some inputs and wrong for some inputs ....
How To Append New Entry In A List Of 100,000 Names Without Iterating List Each Time
Apr 22, 2015I have a list of 100,000 + names and I need to append to that list another 100,000 names. Each name must be unique. Currently I iterate through the entire list to be sure the name does not exist. As you can imagine this is very slow. I am new to Java and I am maintaining a 15+ year old product. Is there a better way to check for an existing name?
View Replies View RelatedJavaFX 2.0 :: Worker Threads - Created By Model Or By Controller?
Dec 8, 2014Sometimes models needs to access blocking devices, like network cards, databases, files, and so on. This should be done by worker threads or services. But who is in charge of that? The controller or the model itself? I tend to say it is the model, as only the model knows about the fact that it accesses a blocking object. On the other hand, it is said that a model should be a POJO, so it would be the controller's job. Is there a best practice or general design rule?
View Replies View RelatedJSP :: Update Database Values?
Jan 4, 2015I am trying out jsp and servlets now for the first time. I have to insert two data, car code and car name into a mysql table. I got those details using jsp but if I use form, it redirects to another page for insertion. I want the data to be inserted and still remain in same jsp page. I am thinking of using onClick from javascript but as I googled this many places have said it is a bad idea to use jsp inside javascript. If so how can we insert data to mysql table without redirecting to another page?
View Replies View RelatedSwing/AWT/SWT :: How To Update JPanel Rather Than Refresh It Every Time On Calling Repaint
Jan 4, 2015I would like to be able to draw things onto the panel (via paintComponent), but I'd like it to draw 'on top' of what's already there. The default seems to be that it resets every time I call repaint.
View Replies View RelatedJSP :: Possible To Update The List?
Mar 18, 2015I have arraylist which is already set in controller side.
I need to update the same list(removing few elements in the list) in jsp based on few conditions like, the selected values in dropdown kind off.
How to update the list in jsp?. Is there any way to handle this using JSTL?.
Instead of using scriptlets, can i do this?
Send / Receive Mass SMS And Update Database
Aug 4, 2014I have just taken it upon myself to attempt to develop an application using java that will implement several features for my aircraft maintenance unit. I've taken a few courses in Java and I am a computer science major, so I wanted to use this as a way to improve my coding skills while also improving the effectiveness of my unit.
Anyway my application needs to have these key features:
1. Access a recall roster that is in Excel format and read the names/phone numbers of up to 200 members. The application also needs to be able to update this information and save it.
2. The application also needs to be able to initiate a recall to some or all of the members on the recall roster via text message.
3. The application needs to be able to receive messages back and display them under each name from the recall roster.
My current plan is to set up a GUI that expands JButtons in a scrollable window as members are read in from the excel document. Upon clicking any of the buttons the person will be contacted individually via a custom message that can be typed in via a popup window after clicking it. Alternatively you can check a box next to any persons button to add them to the list of people to be contacted and then click a button that says "Contact those checked" or something along those lines. Finally there will be a button that just says initiate total recall and it will contact everyone.
As for the interface I want each button to be highlighted red until a response has been received from the person associated with that button, which will then be recorded under their contact information.
I've attached an extremely rough picture...
JSF :: How To Update Datatable After Registering User In Database
Apr 11, 2014I have requirement, in that I am showing a Datatable, above that table i have form in that i can register a employee, after clicking on submit employee data have to be saved in the database aswell as i have to update datable, so that I can see that registered employee in that Datatable, how can i full fill this requirement. I am using jsf 2.0, ejb3.0,jpa 2.0.
@Override
public List<Employees> getallEmployees() {
System.out.println("all employee fetched");
return (List<Employees>) em.createNamedQuery("Employees.findAll").getResultList();
}
In managed bean I am calling this service as fallow in init method, and i am binding same this. employee list to UI
public String getAllEmployeesfronHr() {
this.employees = customerservice.getallEmployees();
System.out.println(this.employees.size() + "=================size of employee");
return "";
}
For every submit button click i have to query database or is there any mechanism to update List / can we use entity manager in anyway so that we can update Employee List....
How To Use Single Button To Insert And Update In Java While Using MySQL Database
Oct 29, 2014I am developing my first Java application and the database I use is MySQL. I have created two separate buttons; one to insert new data into my database and the other to update the database when changes are made.
Each button is working perfectly, but I now want to combine both functions into just the save button. Thus, whether I am entering new data or modifying existing data, the save button should use an IF ELSE condition to decide whether to use the INSERT or UPDATE command.
My problem is, how do I write this IF ELSE statement? What should be the condition? For example;
IF(what? ){
String sql ="Insert into Table1 (classID,className,counselorID,startDate,endDate) values (?,?,?,?,?)";
}ELSE{
String sql2 = "update Table1 set classID = '"+value1+"',className='"+value2+"',counselorID='"+value3+"',startDate='"+value4+"',endDate='"+value5+"'
where classID = '"+value1+"'";
}
JavaFX 2.0 :: TableColumn CellValueFactory Invoked For Every Cell Update - Normal?
Apr 10, 2015I have a JavaFX 8 TableView with multiple columns. The CellValueFactories for the columns are set as:
xxxColumn.setCellValueFactory(new ItemCountFactory(itemName));
where itemName is a String identifying a different item for each column.
ItemCountFactory returns a StringBinding as the cell value, as follows:
public ObservableValue<String> call(CellDataFeatures<Category, String> rowData) {
return new ItemCountBinding(rowData.getValue(), itemName);
}
where
class ItemCountBinding extends StringBinding {
...
protected String computeValue() {
String cellValue = ...;
return cellValue;
}
}
The StringBinding depends on properties of the Category instance for the table row. The correct data is displayed okay, but I have noticed that every time one of the Category properties changes (i.e., every time a cell value changes), ItemCountFactory is called again to create a new StringBinding. I would have expected the Factory to be invoked just once for each cell during initialization, and then the table column would monitor the returned Observable object. Instead it seems to be creating a new Observable object every time the cell value changes. Is this normal, or am I doing something wrong? Same behavior on Java 8u20 and 8u40. If it is not the expected behavior, I will write an example test program; I do not want to post the current full source code.
The table items are set just once, with:
countTable.setItems(categoryList);
where categoryList is of type ObservableList<Category>. The list itself is not modified after being associated with the table; i.e., no rows are added or deleted or replaced.
How To Pass Sysdate With Time In Oracle Database
Sep 2, 2013I am passing LAST_MODIFIED_DATE through java in oracle database. My requirement is : I want to pass oracle sysdate with time.
insertBuilder.addInsert("LAST_MODIFIED_DATE",cal);
Oracle date format is mm/dd/yyyy
Rotate Through JTabbedPanels At 5 Second Intervals
Apr 5, 2014I have a list of Tabs which are dynamic depending on how many cars are in a database. If there are 10 cars there will be 10 tabs called car 1, car 2, car 3, etc. Each tab simply displays a photo and details of the car.
I have a JMenuItem that says start SlideShow and end SlideShow
What i would like to do is automatically slide through tabs when the start Slideshow is clicked.
Most Efficient Algorithm - Concerning Time Complexity For Searching In A Linked List?
Feb 13, 2015with arrays its binary search which finds a value in O(Logn) time but what about linked lists ? the most effiecient algorithm will be O(n) ? and i know that binary search cannot be implement on a linked list , therefore , the only way to search a linked list is a linear search ?
View Replies View RelatedJavaFX 2.0 :: DateTimePicker - Option To Choose Date And Time?
Jun 6, 2014JavaFX 8 has a DatePicker which is very nice. Does it have an option to chose a date and a time?
View Replies View RelatedJava Array Update Without Using ArrayList - Add Values And Update Size?
Feb 9, 2015I am trying to create an array list without using the built in arrayList class that java has. I need to start the array being empty with a length of 5. I then add objects to the array. I want to check if the array is full and if not add a value to the next empty space. Once the array is full I then need to create a second array that starts empty and with the length of the first array + 1.
The contents of the first array are then copied into the new array without using the built in copy classes java has and then the new array ends up containing 5 elements and one null space the first time round. The first array is then overwritten with the new array containing the 5 elements and the null space. The process then starts again adding values until the array is full which will be 1 more value then recreating the second array empty and the length of the first array + 1. This is my attempt at creating this but I have run into multiple problems where I get only the last value I added and the rest of the values are null:
public class MyArrayList {
public Object arrayList[];
public MyArrayList(Object[] arrayList) {
this.arrayList = arrayList;
[code]...
Servlets :: Access List Of Database Records Using JSP?
Apr 3, 2014How we can get the list of records from database my sql using jsp pages and servlets so that it show results on webpage.
View Replies View RelatedJSP :: Store Selected Value From Dropdown List To Database?
Apr 6, 2014I want to store the selected value from drop down list to mysql database...what should I do?
I have written the following code
<%@ page import="java.sql.*" %>
<%ResultSet resultset =null;%>
<HTML>
<HEAD>
<TITLE>Assessment Questionnaire</TITLE>
</HEAD>
<%
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/city?user=root&password=");
[code]....
what should i do to store the value selected from dropdown list...I have multiple dropdown list on a single page..
Servlets :: Sending A List Fetch From Database To JSP
Oct 6, 2014I am trying to display a list fetched from DB in a JSP.
My servlet mapping is:
<servlet>
<description></description>
<display-name>DocumentsServlet</display-name>
<servlet-name>DocumentsServlet</servlet-name>
<servlet-class>com.xyz.servlet.DocumentsServlet</servlet-class>
[Code] ...
The code in the servlet is:
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<Doc> docs = null;
Connection con = null;
[Code] ....
The code in JSP is:
<%
List<WWDoc> completedDocsList = (List)request.getAttribute("completedDocs");
System.out.println("In JSP == "+completedDocsList.size());
%>
The request is not coming back to the JSP page.
If I change the servlet and have "request.getRequestDispatcher("/pages/ViewCompletedWWDocs.jsp").forward(request, response);" un commented, I get exception "java.lang.IllegalStateException: Cannot forward a response that is already committed".
JavaFX 2.0 :: Create Implementation Of Service Class That Runs On Particular Time Everyday
Jun 23, 2014I tried using ScheduledService but the delay and period fields accepts a Duration object. I want the Service to run at exactly 6.00 pm everyday.
View Replies View RelatedJavaFX :: Editable And Saveable Database
Jul 22, 2014I am rather new to Java and to Javafx, I was able to make my program work to a point. I would like the file that is opened to appear in the editor tab and other files I open to appear in the viewer tab if they are not being edited. From what I have looked up I think that the HTML text editor might be the one for me the only question I have is how do I implement it and the file chooser ( because I think that would work).
package data.base;
import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
[Code] .....
JavaFX 2.0 :: FXML Application With Database
Jun 5, 2014I'm new in JavaFX world. I'm going to write an application using FXML and this application will use embedded database. Is there any tutorial or example showing how to connect FXML (using controller as I expect) with database. I'm using Hibernate with classic JAva - is it possible to work with Hibernate with JavaFX?
View Replies View RelatedServlets :: How To Store List Of Data Of A Database In ServletContext
Feb 5, 2014i am newbie to servlet and m working on a project like online shopping. I have list of data items in my database and i am able to fetch and display the data from database but i want to know that how can i store these data items in ServletContext so that i can use use it frequently in other pages.
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