I have started coding recently and been working on a simple java timer. My problem is that the button does not show any response even though an action has been done via actionlistener.
Example: When I press the "Start Timing" button, it should start timing and output the counter to Static Timer but instead of doing that, it does nothing.
The important bits are under Timer code and Button Start Timing. Is their something that I'm missing?
//--- All imports have been handled ---
public class GUI {
double counter = 1;
double inputA = 1;
int delay = 1000;
Timer timer = new Timer(delay, null);
I am messing around with a Swing application and am a bit stuck as to how to join the front and back ends.This is the code for the DataManager class which is responsible for loading and saving objects and interfacing with rest of the system. The data I need displayed comes from a .txt file in the applications directory. I need to show certain aspects of the data in the JComboBoxes in the GUI class.
Java Code:
package programdataapplication; import java.io.*; import java.util.*; public class DataManager {
I have written the java code using timer class to schedule the task , but i am getting error as } expected, i am not able to figure out the error, I have placed the { opening and closing curly bracket everywhere but still it is giving me error.
I have a website which requires login. After I enter username and password and click login button, a new page is loaded. In that page I have a username in the right up corner. When the user clicks logout button, Session.Clear() method is called and also Response.Redirect(" to login page "). It works OK, but the problem appears when I then click Back button in the browser. It gets me back to previous page with the username in the right up corner. Insted, I would like to show message asking user to enter password again so he can login properly.
i have made a phone directory and i have also maintained a database for this. i want on clicking the next button each row from database table display one by one on the GUI into their relevant text Fields. i have written this code , this code show the last row of the table on single click on next button. i want one by one row on each next button click.
I don't want a tutorial that shows me how to do a util timer with a button, or that prints a message, or that does anything. I want the simplest possible snippet that makes the timer, lets me have it do something, and can be stopped. No bells and whistles, no strings, no sparkles and explosions. Just a timer.
I am getting Web Page Expired error while clicking the back button of the browser, after submitting a form. The form method is POST. ( I have to keep it that way). I tried this code
I am currently making a quiz for a project. I am almost finished, but I need to use a timer.
Here is what I want to happen:
The user to has 15 seconds to answer each question. If they answer, they are given the option to move to the next question, or leave the quiz. If they answer incorrectly, the quiz closes. If they do not answer within the 15 seconds, the program treats this as an incorrect answer, and the quiz closes.
Here is a section of the quiz code which includes the start of the code to the end of the code for the first question:
import javax.swing.*; import java.awt.event.*; public class menu { public static void main (String[] args){ JFrame frame = new JFrame("Menu"); frame.setVisible (true);
I use the BlueJ software to develop my programs. I am creating a program which holds two data structures; Array List and Binary Tree. I have created a person class which is used to declare variables containing people, this class also contains a method which prompts the user to input 3 characters of a memorable word. These people are created within the array list and binary tree. This actually works in practice, within the program, but i get an error, and i need the program to contain no errors.
In my binary tree class, i want to call this method.I have attached 4 images to this post, an overview of the classes used, a look at highlighted code which is an attempt at calling a method from the person class, and the method contained within the person class itself. Note that the person class is just called "Person". The 4th image is the error being displayed.
having trouble trying to understand the insertion and removal of Nodes.
I have to insert a new node at the end of the linked nodes, if i insert by terminal : 1, 2, 3. The printed nodes are going to be in the same order, 1,2, 3.
I have done the exercise, but it only prints the last node created and i dont know where its the problem. We did it before with "insert at the beginning", may be the problem is with the print() method in SimpleList.java, but i dont know how to print "backwards".
This is the code:
Node.java
public class Node { public int infoNodo; public Node next; } SimpleList.java public class SimpleList { private Node head;
How do I impliment a clock/timer in Java? The program saves files in memory for future use. I've included part of the program below I'd like to add a timer to check if the file was changed every 10 minutes. I have included part of the program below.
static FastDateFormat fastDateFormat = FastDateFormat.getInstance("MM/dd/yy HH:mm:ss"); private static final class FileContentsObject { private long cachedTime; // currentTime private long lastModifiedTimestamp; private List<String> contents;
How can i add a background image for this code without disappearing the button and label? I want a frame that has a background and still shows the buttons and label that I place. and how can I insert Buffered Reader in this code, this is a file organizer, but it only shows first line of a text file. I want to show the whole text file. And is it possible to also show path of the file?
I'm trying to put in a countdown timer into my project, but want to get it working first. I am finding trouble because I have a couple of errors.
Java Code:
package Project; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Minutes { int count = 30; //Integer count is set equal to 30. int delay = 1000; // Integer delay is equal to 1000. 1000 being in milliseconds which is 1 second.
I have been doing a program that allows the user to input students names and numerical grade values. I have already completed 3/4 of the program but am stuck on the bubblesort method as this is what it requires:
The program must have an indefinite loop, which prompts the user to select a sorting criterion or to end the program, and must also use bubble sort. Note: The user may either select name or grade as the sorting criteria. The program must use bubble sort to sort that data according to the specific criteria and then use another loop to display the data. This process must continue until the user ends the program.
My problem is, while i can easily do the bubblesort, where to look on how to link elements of the two arraylists I'm using (one for grades, one for names) so that when the user decides what sort they want, the individual's name and grade stays together.
i've spend an hour or two, pasting fragments from tutorials and nothing changed.
Well - i have GUI, that have JComboBox with two elements: String[] fedoras = { "Fedora 19", "Fedora 20" }; JComboBox fedora_list = new JComboBox(fedoras); fedora_list.setSelectedIndex(0); fedora_list.setBounds(120,170, 170,25); fedora_list.addActionListener(this); this.add(fedora_list);
Below i have normal button (named Update) with "update" set as ActionCommand. This button after clicked should check which value from list is selected and perform different operations for that elements. But it's harder than i thought.
Code for update button:
public void actionPerformed(ActionEvent e){ String cmd = e.getActionCommand(); (...) else if ("update".equals(cmd)){ String selectedFedora = (String) fedora_list.getSelectedItem(); if (selectedFedora.equals("Fedora 19")) {
[code]....
- after user clicked Update button, button should check which value is selected in JComboBox (fedora_list). - if Fedora 19 is selected and button clicked, then action in Xterm - if Fedora 20 is selected, this same action in Xterm is performed, but for Fedora Linux 20
The problem is - i don't know hot to code Update button to check which value from fedora_list (JComboBox) is selected and perform other actions for every element on List.
I have a swing application that gets football scores from a website using Jsoup.
When the "Get Scores" button is pressed, the scores are printed to a JTextArea with a JScrollPane.
I have also used a SwingWorker to update the scores every couple of seconds.
My problem is that every time the JTextArea updates, the JScrollPane scrolls back to the top of the text area. I wan the scroll bar to stay where the user left it.
Here is my code (The update is currently set to update every 1 second so you can see what the scroll bar is like).
import java.awt.*; import java.awt.event.*; import javax.swing.*; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.select.Elements; public class frame extends JFrame {
private String displayFormat = "%02d:%02d:%02d";// produces 00:00:00 hour:min:seconds public void timerHasChanged() { currentTime = System.currentTimeMillis(); // How long has been taken so far? long secsTaken = (currentTime - startTime) / 1000; long minsTaken = secsTaken / 60; secsTaken %= 60; long hoursTaken = minsTaken/60; minsTaken %= 60;
Formatter fmt = new Formatter(); fmt.format(displayFormat, hoursTaken, minsTaken, secsTaken); timerJbl.setText(fmt.toString());
How would i code the get and set method for format, so in property tab a user can choose if they want the timer shown in seconds, or minutes or hours or seconds&minutes
I want to develop a Java program that uses OpenScript APIs to test my applications. The OpenScript framework automatically creates the Java Code so I was thinking of either using this code or create my own using the APIs.
I tried both options using NetBeans but I'm getting errors everywhere starting with the library import. I'm pretty new to Java so I'm sure I'm missing a lot of things here. I pasted the code below from the OpenScript framework that want to use in a stand-alone file for your reference.,
The gist of it is to create a very basic memory game. There are 12 buttons, each associated with an icon. Every button that you click will display the icon and will stay there until clicked again. I got the bulk of it taken care of, but my issue lies with switching the icons back and forth. I can get them to display one at a time, but when I click on a new button, all the icons except the button I just clicked don't display. Essentially, only one shows up at a time.
I am using JS, how we can make focus to a button during onload, the button need to get focus which is in tabbedPane tab Name : (Search Critera1) using javascript.
