I have loaded the combo box at starting of program.When i am adding the element to combo box through database it's not updating visually.But the inserted data is successfully loaded in List.
void update_Attan() {
DefaultComboBoxModel nm = new DefaultComboBoxModel(new StudentMethods().update_combo_AttendanceType());
cmbStdAttType.setModel(nm);
}
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
[Code]....
I am trying to Make A GUI which has a Jcombo box i also want it to have a jlabel that up dates depending on which option the user selects from the JcomboBox
for exampl if i select lion i want it to say you chose lion on the Jlabel and if i choose ostrich i want it to say ostrich and so on
Design and implement an application that creates a histogram that allows you to visually inspect the frequency distribution of a set of values . The program should read in an arbitrary number of integers that are in the range 1 to 100 inclusive; then produce a chart similar to the one below that indicates how many input values fell in the range 1 to 10, 11 to 20, and so on. Print one asterisk for each value entered.
No input prompt
Terminate input by typing CTRL/Z (two keys typed at the same time) on a separate input line (use CTRL/D on Linux/UNIX systems)
Use hasNextInt() to terminate your input
Format as below (slightly different from the text example)
Z:dbraffittWeek10> javac Histogram.java
Z:dbraffittWeek10> java Histogram
10 10 10 10 10 20 20 20 20 20 20
20 25 35 45 55 65 75 85 95
ctrl/z
1 - 10 | *****
11 - 20 | *******
21 - 30 | *
31 - 40 | *
41 - 50 | *
51 - 60 | *
61 - 70 | *
71 - 80 | *
81 - 90 | *
91 - 100 | *
What I can not figure out is how to use hasNextInt() to terminate the loop. How to not have an input prompt. How to use ctrl z to terminate the input. Or to make it where it doesn't involve range values like -1.
Java Code:
import java.util.Scanner;
public class Histogram
{
public static void main (String[] args)
{
Scanner scan = new Scanner (System.in);
int [] nums = new int[101];
[Code] ....
Design and implement an application that creates a histogram that allows you to visually inspect the frequency distribution of a set of values . The program should read in an arbitrary number of integers that are in the range 1 to 100 inclusive; then produce a chart similar to the one below that indicates how many input values fell in the range 1 to 10, 11 to 20, and so on. Print one asterisk for each value entered.
No input prompt
Terminate input by typing CTRL/Z (two keys typed at the same time) on a separate input line (use CTRL/D on Linux/UNIX systems)
Use hasNextInt() to terminate your input
Format as below (slightly different from the text example)
Z:dbraffittWeek10> javac Histogram.java
Z:dbraffittWeek10> java Histogram
[Code] ....
What I can not figure out is how to use hasNextInt() to terminate the loop. How to not have an input prompt. How to use ctrl z to terminate the input. Or to make it where it doesn't involve range values like -1.
import java.util.Scanner;
public class Histogram {
public static void main (String[] args) {
Scanner scan = new Scanner (System.in);
int [] nums = new int[101];
[Code] .....
I am using JSF2 with Primefaces. Here is my business requirement-Hidden field on JSF page should take the value from the session object that is set in managed bean. Session object is updated every time when the user submits the page. I am able to update the session object in the managed bean and able to get the value in the hidden field first time and after that i see the same value in the hidden field even though session object has different value. Here is the hidden field: <h:inputHidden id="xyz" value="xyz"/> i tried using sessionScope but still didn't work.
View Replies View RelatedI have a jTextPane set up and a panel with radioButtons. My jTextPane displays the contents of a text file I have chosen. The 3rd line, 4th index, displayed in my jTextPane specifies a value of type int. When I click my radioButton, I would like that value to increase by 1. So far, I have the following code. I tried to pane.setText(value + 1), but that doesn't seem to work. How do I update the value and display the updated value in jTextPane?
My code :
private final ActionListener actionListen = new ActionListener() {
for(String line: pane.getText().split("")){ String lineThree = line[3];
int value = lineThree.charAt(4); if(radioButton.isSelected()){
pane.setText(value+1); } }};
The program runs well , it adds the applet but it dosn't update the interface unless I press "_"(Minimize) . To be more clear , the object paints a spring wich goes through 4 stages , it is added to the JFrame but it dosn't uptade until I minimize the frame , that is when it goes to the next stage .
The main class which calls the spring to be added to the frame :
public class principal implements ActionListener ,Runnable{
JTextField field;
JFrame frame;
private class Action implements ActionListener {
public void actionPerformed(ActionEvent event) {
frame.repaint();
[Code] .....
I have two images. I want to be able to click them and kick off a call to a listener in Java to change a value in the bean. I also want the view to update my dropdown (labeled "menuModel") to either be rendered or not, depending on which image I click. Alternatively, I would be fine with the dropdown simply being disabled and enabled for the same criteria.
So far, the listener kicks off fine, and the value gets updated correctly in the bean. However, the view never gets updated. I have tried this a hundred different ways, but nothing seems to work. If I hit refresh on my browser, the view updates. But I want it to do it automatically.
I am using standard JSF 2.1.
<div style="font-family: Verdana; font-size: 10pt; color: #FFFFFF">
<h2>Calibrations</h2>
<h:form id="tunerSelectionForm" style="color: #000000">
<h:commandLink>
[Code] .....
When I add an element to my array, I have to make sure that it stays a heap, ie every child is smaller than its parent. However the method that I am using for this, trickling up, is not updating the elements properly, it pretty much just leaves is as is.
Here is the relevant code:
public class MaxIntHeap {
int[] array;
int actualSize = 0;
public MaxIntHeap(){
array = new int[20];
[code].....
Why the Progress Bar is not Working in Second attempt?When i am Invoking Below Method on actionPerformed at first attempt its Working Fine but After that Its Not Working at all....
void initWait() {
go.setEnabled(false);
browse.setEnabled(false);
choice.setEnabled(false);
wait.setVisible(true);
wait.setMinimum(0);
wait.setMaximum(Info.getMp3().length);
System.out.println(Info.getMp3().length);
wait.setStringPainted(true);
[code]...
for a better Understand see this Mp3Arranger.jar or see the Whole Project SourceCode
My program is working fine. When I executes it, it shows me this:
The clock is 54 minutes over 23 (+41 seconds.
and when i press ENTER, it shows me this:
23:54:41
But then it won't show me the update. I want to update the time, for example when I started the execution the time was 23:54:41 but it must show me something like 23:54:45, because I need the current time.
I have searched the whole internet about this but I don't know how to use the "Date.update ();".
Here is my code
package p2;
import java.util.Calendar;
import java.util.Date;
import javax.swing.JOptionPane;
public class Time {
public void myTime() {
Calendar cal = Calendar.getInstance();
[Code] ....
I have an application scoped and i want to edit it from request scoped data. I use this code but application scoped data are not updating. What i am doing wrong?
Application Scoped Data
@ManagedBean
@ApplicationScoped
public class ApplicationData {
protected String contactEmail;
public String getContactEmail() {
return contactEmail;
[Code] ....
Alright, I have a JavaFX gui that is creating a new instance of data calculation to graph in a chart; however, the data is not updating each time the Platform.runLater() feature executes. Each time an event occurs, a new instance with the same variable name occurs. I use to get methods to retrieve the data I want, so shouldn't the values update each time the new instance is created? This is a very condensed version of what happens with the event, but this is what is not working correctly.
Event:
solarPlot = new SolarTracker();
solarPlot.getElevation();
solarPlot.getAzimuth();
Class constructor :
public SolarTracker() {
[Code] .....
If I run this code. I can manipulate it so that X wins. When the third X button is pressed, there is no display saying that X has won and that the game is over. I have read over this code for days and still have not figured it out.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TicTacToe extends JFrame implements ActionListener, WindowListener{
public JFrame window = new JFrame("window");
[Code] ....
I am trying to create a tree that is like a take on 21 Questions. The tree pretty much just starts with three default values: the root/first question "Is it a mammal?", a left child "is it: human?", and a right child "is it: fish?", and then it builds off from there. It goes left for YES and right for NO. If the program guesses the wrong animal the user must enter the correct answer and a question that will distinguish the correct answer and the failed answer. That new question then becomes both the the failed answer and new answers's parent.
A little visual:
....................Is it a mammal?
...........It is: human?........Is it: fish?
*lets say it is a mammal but not human, ie a dog
Updated tree:
.....................Is it a mammal?
.....Does it have a tail?............Is it: fish?
Is it: dog?......Is it: human?
My problem is that after I update the tree 3rd time the values do not change properly. Lets say it is a mammal and its does have a tail, BUT its a cat, then, the updated question, which would now go before "is it: dog?" would be something like: "does it chase rodents?", which its left child would be cat and right would be dog.
However, when my program displays the values it would go something like this:
//first run: GOOD
Think of an animal and I will guess it!
Is it a mammal? Enter yes or no:
yes
Is it: human?
no
[Code] .....
So pretty much I can't understand what I'm doing wrong since the values in the print statements are right, but they are wrong during the actual run. Where is my error?
Write a subclass of BasicGame in which the computer asks the user to choose a whole number from 1 to 100, inclusive. The program then makes a number of guesses. After each guess, the user tells whether the guess is too high, too low, or exactly right. Once the computer "knows" what the correct number is, the computer tells the user the correct number and the number of guesses tried. Have the program ask the user after each game whether she wants to play again. Design the program so that it always guesses the correct answer by the seventh try at latest. Hint: Have two instance variables that keep track of the smallest and largest values that the guess could be (initially 1 and 100). After each wrong guess, update these smallest and largest values appropriately.This is what I have written for the assignment:
Java Code:
import javax.swing.JOptionPane;
public class GuessThatNumber extends BasicGame
{
private java.util.Random randy;
private int itsCompNumber;
private int itsHigh = 99;
private int itsLow = 1;
[code]...
The part I'm having trouble with is changing the high and low values based on the input of "too high" or "too low," which I tried in the continueGame method... When I test the game, the values for itsCompNumber aren't restricted by the user's input at all, and I'm not sure how to fix it.
I am working on a project in Eclipse, and it is my first time working with swing.I have the GUI setup the way that I like it, my hang-up is how to "update" the variables in the code as they are changed.The basics of the code is that I have several different String[] that will show up in a Jtable depending upon the input of the lists I have in the GUI.
in essence,
if list1==2 && list2==3
returnedarray = array1
I would like to have the returnedarray/Jtable be updated live as the lists are manipulated. So as soon as I change my list selections to...
list1==1 && list2==3
the code would shift to the proper array...
returnedarray = array2
If making the output update live isn't a possibility how would I code a button to update the input/output giving me the proper String[]?
I create and populate someLinkedList with '*' characters as soon as a gameLinkedList object is created, so my class is something like
private int size;
public class gameLinkedList{
private CharNode game;
public gameLinkedList(String someWord){
size=someWord.length();
for(int i=0;i<size;i++){CharNode aNode = new CharNode('p');
[Code] .....
I am trying to use a prepareStatement to update the database but I am getting an error on setInt - cannot find symbol and on the executeUpdate() I get error no suitable methods for executeUpdate (no arguments)
public Products UpdateProductsDB() {
pool = ConnectionPool.getInstance();
connection = pool.getConnection();
try {
stmt = connection.prepareStatement("UPDATE products SET qtyonhand=?, qtysold=? WHERE id=?");
} catch (SQLException ex) {
[Code] ....
I used similar code for an insert statement and I don't have these problems
I have a TabView that generates the numbers of tabs, titles and content based off of the selected project from another field. I have managed to get it to load the proper number of tabs and content, but the first tab title displays the title of the first tab from the previous query.
The jsf is:
<h:panelGroup id="equipmentWrapper">
<p:tabView effect="blind">
<c:forEach items="#{databaseViewHandler.deviceTypes}" var="deviceType">
<p:tab title="#{deviceType.key}">
<ui:include src="#{deviceType.value}"/>
[Code] ....
And the method handling the content and number of tabs:
public DatabaseViewHandler() {
deviceTypes = new LinkedHashMap();
}
public Map<String, String> getDeviceTypes() {
return this.deviceTypes;
[Code] ....
The method findAssociatedEquipment() is called when it recieves a selected project to display.
The command button calls the update for panelGroup "equipmentWrapper". It updates fine for the ui:include and generates the correct number of tabs in the correct order.
So for example the first query might only generate one tab for an 881 device. Then if you select a project that should have a 2911 and 2960 it will correctly load both, but the title for the first tab will retain 881. Should you select a third it will have the title 2911 from the second project.
The stacked bar chart not working with FXML and controller class. My code is given below
Controller class
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javafxapplication27;
import java.net.URL;
import java.util.Arrays;
import java.util.ResourceBundle;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
[Code]...
When I run this program, only the barchart populating, Stacked bar chart not displas any graph.
Output window
I'm doing an application which needs a JTable with data from an existing database. I need the table to periodically (I plan to use a Timer) reflect the changes made to the DB (inserting new rows, deleting or updating existing rows) without making the dirty approach of clearing the whole JTable and refilling it again, which is not nice. I need to just add/modify/delete the needed rows, not the whole table.
View Replies View Relatedupdating a label from a different actionPerformed class. The problem is in the settext command it is not updating the JLabel.
public class total1 extends swingPointofSale implements ActionListener
{
public double totalCost;
public String totLabel;
[Code]....
why JLabel setText method is not setting up the text dynamically even though i am calling repaint() once i set the text? Code snippet is below
Locale currentLocale = new Locale(panel.getCountryLocal(), panel.getCountry());
ResourceBundle messages = ResourceBundle.getBundle(Constants.messageBundle, currentLocale);
messages = Panel.getMessages();
String displayString = messages.getString("101022");
[code]....
Pretty much the title. Everything was running fine until a moment, when pain updated only once after the first resize. I've seen some worries about th.start(); or repaint(); but I did not manage to track the problem down since I'm a rookie at programming. Here's the Main class.
import java.applet.*;
import java.awt.*;
public class Main extends Applet implements Runnable
{
// variables
Thread th;
Player player;
static Shot [] shots;
[Code] ....
I need to view, update and insert records through a jsp page.example: Employee details..If we give an admission number of an employee, and if the admission number exists in the database then the details like Name, DOB, DOR, Address, Contact info should be displayed in the appropriate fields.(simply a select query in SQL) . The fields are editable and if we need to make any changes we can update in that details itself. If admission number doesn't exists means we can insert all the details except the admission number and a temporary admission number is generated and displayed. The problem with this is i can't able to revert it to the same page.
View Replies View Related