JTabbedPane Tab Click Simulation
Mar 31, 2015Is it possible to programmatically simulate a click event on a tab (JTabbedPane) to trigger its changeListener once a button is clicked ?
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Swing/AWT/SWT :: Implementing JTabbedPane GUI?
Aug 21, 2014I have been trying to learn how to use the TabbedPane GUI. I can get the tabs to show up, but the buttons I have placed in each tab do not show up. Why this is not working. I assume that, for some reason, the buttons are not linking with their respective panels, or the panels are not linking to the respective tabs.
import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
[Code] ....
How To Sync Up Value Of JSlider With JTabbedPane
Apr 11, 2014I have a problem here ive been trying to figure out and im not sure what the problem is. I have a JTabbedPane with an amount of tabs that match the amount in a JSlider. The amount can change dynamically.
What i want to do is have it so that if someone clicks the second tab it goes to value 2 on the JSlider etc... Should it be simple as adding a changeListener to each and going
slider.setValue(tabs.getSelectedIndex());
tabs.setSelectedIndex(slider.getValue());
It doesn't seem to have any effect. Is it some kind of scope issue maybe or is this code wrong?
Swing/AWT/SWT :: How To Trigger ChangeListener Outside JTabbedPane
Mar 11, 2014Consider this simplistic scenario,
tabbedPane.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
}
});
How do I trigger this listener, say when I return from a JDialog, I can't make this listener to swing into action even I tabbedPane.revalidate();
Swing/AWT/SWT :: JTabbedPane / Method Call When Leaving A Tab And When Entering Another One
Mar 16, 2014I think, is of concern to a large Swing-JTabbedPane users and which does not appear in the Sun-Oracle tutorial [URL]
How to add functionality to the hidden 'Action Listener' of JTabbedPane to obtain the two following functionalities, when passing from Tab_Panel_1 to Tab_Panel_2 ?
- To call a home made function as very last task when the 'tab selection change' is triggered and just before control and visibility are leaving Tab_Panel_1.
For example : Calculations and table fillings need to be operated. One assume that the fact of leaving Tab_Panel_1 (by clicking another 'tabPanel') means that the input data in Tab_Panel_1 are completely introduced and that calculations and/or table fillings may occur (to be used by other 'Tab_Panel's).
- At the moment of entering Tab_Panel_21 or Tab_Panel_22, the very first task is to use the previous calculation results and/or table fillings as input parameter of methods own to Tab_Panel_21 and Tab_Panel_22.
For example, these data are further processed and used to feed a graph, different for Tab_Panel_21 and Tab_Panel_22.
tabbedPane.addChangeListener(new ChangeListener()?
SwingWorker?
SelectionChanged?
Swing/AWT/SWT :: Background Color Of JTabbedPane Is Light Blue?
Feb 18, 2014No matter what I did, and searching for every piece of setBackground, The background color of the JTabbedPane is light blue.
public final class MainFrame extends javax.swing.JFrame implements Runnable, WindowListener,
WindowFocusListener,
WindowStateListener {
Container mainPanel;
JPanel bluePanel = new JPanel();
CloseButtonTabbedPane tabbedPane;
[Code] ....
Java Simulation Library
Mar 12, 2014I am trying to work on a project that involves Java Simulation Library, the imported library jslCode.jar cant be found ...
package jslx.forecasting.demandgeneration;
import jsl.utilities.random.distributions.Binomial;
import jsl.utilities.random.distributions.Constant;
import jsl.utilities.random.distributions.Exponential;
import jsl.utilities.random.GetValueIfc;
[Code] ....
Simulation - Two Cars Are Going To Race Against Each Other
Oct 22, 2014I was thinking to make a game where two cars are going to race against each other. I already have two gif pictures which are the cars. I do now have a background and a racer track. So we can start from here.
I have made a object with construction which I called Racers. Inside that, i wrote a PaintWindow (Where the window and much more is inside), -car1, -car2. All these is private. So I made something like this now:
package p2;
public class Race {
private Object window;
private Car car1;
private Car car2;
public Race(PaintWindow window, Car c1, Car c2) {
[Code] .....
But the problem is now that im kinda lost and I dont really know what to write anymore. How can I get a for example a green background on the whole PaintWindow with two Racers tracks and inside the racers tracks (Each car have each track) does it have to be cars. So I need to somehow import the cars inside it too. But thats the problem I need. that I dont really know what more to do. To make it easier, I have a Main-method in another class.
public static void main(String[] args) {
PaintWindow window = new PaintWindow();
Car c1 = new Car(new ImageIcon("C:/Users/Sarah/Desktop/CarBlue.GIF"));
Car c2 = new Car(new ImageIcon("C:Users/Sarah/Desktop/CarRed.GIF"));
Race race = new Race(window,c1,c2);
race.action();
if(args.length>0) {
Paintwindow.pause(2000);
window.dispose();
SSO Kerberos Simulation In Java
Apr 20, 2014I'd like to learn more in Java security, namly Kerberos and SSO. The question is weather I have too weak laptop. I have 8 GB ram. How many virtualbox instances od I have to run in order to JAAS, SSO kerberos demo to simulate. For instance VM with Windows 2008 Server -> 3 GB RAM, Centos VM -> 1GB. Is 8 GB RAM in my laptop not too little?
BTW
I do not have yet experience in SSO/Kreberos but I want to know what to do in order to simulate and exercise.
Print Queue Using Priority Q Simulation?
Nov 28, 2014I have a class "ExecuteJob" which has Print Q in the form of Priority Q.
You can keep adding job to the Q by calling one of the method in the class. However, and object cant do things simultaneity can it? While im adding a new job to the print queue, can it be executing and existing job in the print Q.
To achieve that, I would need to implement process and threads? I believe am I right? So that adding a job is independent to being removed?
Front End For Air Traffic Control Simulation?
Apr 1, 2014I'm a student designing and developing an Air Traffic Control (ATC) system for incoming aircraft, mainly implementing the part which handles the queuing system for approaching aircraft.
View Replies View RelatedCallNumber Method For Bingo Simulation
May 26, 2014As you may have known, I'm creating a Bingo simulator from scratch.
Precondition: an n amount of randomly generated cards are created.
Postcondition: After a number is called, cards that has that number will have its value be true.
For example:
Precondition
Java Code:
Card 1 //Name of card
1 24 32 48 63
2 22 41 51 64
3 16 37 52 61
4 19 33 57 72
5 20 34 54 71 //Card with numbers
false false false false false
false false false false false
false false false false false
false false false false false
false false false false false //Card with boolean values to indicate marked values
[Code] .....
So what I want to do is have a method that allows me to use the callRandomNumber method so that the matrix location with that random value is marked true for all of the boards.
Traffic Light Simulation Using Multithreading
Feb 2, 2015I am writing a simple program to simulate a traffic light. What I want is to make them glow after each 1 second, one by one. For example: Firstly Red, then after 10 seconds, red will be put to off and yellow will start glowing and then accordingly green. This process shall continue incessantly (Just for experimental purpose). I have some arrangement done but could not figure out how to put them together in run() method of Runnable interface. I know how interthread communication works. But could not find any logic in this case when three threads will run together.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TrafficLight extends JFrame implements Runnable
{
JButton red, green, yellow ;
TrafficLight()
[Code] .....
Simple 2D Optics Simulation Program
Sep 13, 2014I'm very new to Java (I literally started learning it yesterday) and I've been working on a simple program that's meant to simulate interactions between optics objects and light rays.
Everything has been going really well, except that my mirrors only reflect the first ray that comes in contact with them.
Here's a screenshot : 2014-09-13 at 7.39.23 PM.jpg
I wrote 7 classes:
Main class to create the optics objectOptics class. the most important class that uses a recursive function to detect the nearest intersection point of a ray with the nearest optics object. It then calculates a reflected ray and inputs it back into the function until no intersections are found or the max recursion depth is met.Ray. creates a rays (in parametric form O + tD where O is the origin, D is the direction and t is a non-negative scalar)Object. empty abstract class used for polymorphism (so when i add more optics objects like prisms and lenses they'll share the object type)Mirror. Basically a line segment created with the Line classLine. Creates a line segmentDraw. JComponent with paintComponent function that loops through an array of shapes and draws them to the screen.
What I know so far is that the problem boils down to the checkRay() function in the Optics class. When a mirror has already reflected a ray, the line:
Intersection sec = new Intersection(ray,(Mirror)obj);
creates an intersection with a null point.
I debugged it line by line and found the problem was that my variable 't' (that is the parameter for the parametric line which represents the mirror) in the Intersection class got big values when it's meant to be between 0 and 1 (since it's a line segment), which resulted in the function returning null (as it should when 't' is not between 0 and 1).
I've confirmed with tests that this has nothing to do with the specific mirror or angle of incidence. It only occurs when a mirror has already been intersected with by a ray.
I've found out that my function:
public PVector getNormal(PVector D){
D.normalize();
return new PVector(D.y,-D.x);
}
Changes the value of the 'D' PVector of the mirror inside my 'objects' ArrayList. How can it access the private PVector 'D' from outside the Mirror class? This normalization to the direction vector is what causes the Intersection class to return null the second time around!
The problem was that in the getNormal function, the input vector argument was a reference to the 'D' vector for the mirror in my 'objects' ArrayList so the .normalize() function acted upon the original vector, changing it's value and screwing things up. The two classes I talked about:
Optics: (note line 64. this line returns a null intersection when it shouldn't)
package ofer.davidson;
import java.util.ArrayList;
public class Optics {
//Arrays to store all the optics objects and rays that are created
ArrayList<Object> objects;
ArrayList<Ray> rays;
[Code] .....
Also why doesn't my background turn white??
Elevator Simulation In Event Time Not Clock
Apr 10, 2014I am making a elevator simulator for my class. It needs to be "event time". I am having trouble understanding how I can make an "event time" simulator. Initially I was using a while loop to run a clock time simulation of x seconds for each event, until I ran into a concrete wall and had to call another method which took X seconds, while still needing to execute code.
An example of what I did is:
Spawn person -> person.goToElevator (Takes x seconds) - > person.waitForElevator (Until elevator arrives, x seconds). While this is happening, I needed to create another person and do the same thing, this will add another to the queue if the first person is still waiting. Etc etc, you get the point.
We have not learnt about multi threading, that is the next assignment.
Here is a quote from my lecturer:
"That's right, it requires multi-threading which we're not doing in this paper. Here's a solution that can work:
The person waiting for the lift and then doing lots of other things should do all that in a fraction of a second. So, you don't let the person really wait. Instead, you will set a timestamp in the future in the person object that "he's busy till that time". In all other steps in your simulation you will first check if a person is "busy" (i.e. has a timestamp in the future). If so, you can't use this object, otherwise, you can.
How does it create a bigger queue? Outputs I would have in my final simulation would be, averageQueueLength, numOfPeopleInBuilding etc.
Create 2D Game That Has Realistic Space Simulation
Jul 31, 2014I am attempting to create a 2d game that has a realistic space simulation. The map is supposed to be set so that you are looking from the top down. The problem I am having exists in my interaction between the sun and a planet. Simply put, the planet will only move in a single diagonal direction without ever changing direction. The formulas I am using are F=(G*M1*M2)/D^2 and A=F/M. The code below is simplified.
(inside planet Class)
double x;
double y;
double mass;
double xForce;
double yForce;
double xAccel;
double yAccel;
[Code] ....
Things I have already tried:
1. Setting G to negative
2. changing the order of the subtraction in determining D
3. some weird pythagorean theorem thing someone suggested
FIFO Queue - Waiting Line Simulation
Jan 22, 2015 how to setup a program that simulates the progression of a line over time.The scenario involves a bank and 5 tellers. There is one line of customers that starts off with an initial length of 20. Every minute, 10 more customers are added to the line. As this is meant to be a FIFO queue the first 11 customers in the line will be distrusted among the 5 bank tellers as follows: Teller #1 will process 1 customer per minute, Teller #2 and #3 can each process 2 customers per minute, and Teller #4 and #5 can each process 3 customers per minute. Therefore, the first 11 customers in line will be processed within the first minute of the programs execution.
Unfortunately, I am not sure how to attack this thing. I am thinking that I need to setup a queue for the initial 20 customers and an array for the 10 customers that will be joining the line every minute. However, I am not sure how I can set this up to work automatically.
Bank Account Simulation - ResultsModel Cannot Resolve To A Type
Mar 12, 2015I have serious errors. I am trying to design a Bank Account Simulation. My various codes are as below.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.io.*;
public class Display2 extends JFrame //implements ActionListener
[Code] ....
ERROR: ResultsModel cannot be resolved to a type
Swing/AWT/SWT :: Traffic Simulation - Applet Not Initialized Error
Mar 25, 2006I have a traffic simulation code that is producing a start:applet not initialized error each time i run it. This is the code
import java.io.InputStream;
import java.net.URL;
import java.util.*;
import java.awt.*;
import java.applet.Applet;
import java.lang.Thread;
class Node {
[Code] ....
Simulation On Assembly Code Level By Writing A Mini-compiler
Sep 28, 2014I need to do a simulation on the assembly code level by writing a mini-compiler for each ISA, i.e., 4, 3, 2-Address Architecture, Accumulator Architecture, Stack Architecture, and Load-Store Architecture.The input to the simulator is a segment of C program:The basic sample segments of C code are:
1. A = (B + C) * D - E;
2. F = (G + H) - (I + J);
3. G = H + A[I];
4. If (I == J) F = G + H;
Else F = G - H;
5. Loop: G = G + A[I];
I = I + J;
If (I != H) Goto Loop;
6. If (G < H) Goto Less;
7. While (save[I] == K)
I = I + J;
N-body Simulation - Forces For Body Not Calculating In Some Instances?
Mar 13, 2015I am making a n-body simulation. For some reason, when I have two bodies orbiting each other and I add a third body, the two initial bodies stop orbiting each other.
EXAMPLE:
[URL]- earth is orbiting the sun, when I add mars,[URL] earth AND mars does not orbit the sun and both travel in a straight line. Almost as the forces are not being computed at all on the body. How can this be?
Here is the relevant code:
public void update(float deltaTime){
for(int i=0; i<bodies.size();i++){
resetForces();
bodies.get(i).update((float)(deltaTime / Math.pow(10,9))*timeScale);
lastTime = System.nanoTime();
//sets the forces for all bodies
for(int n=0; n<bodies.size();n++){
[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 RelatedRun Another Class By Button Click
May 4, 2015i 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]....
Impossible To Click Button Twice
Apr 8, 2013I 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] ....
Applets :: Subtraction And Multiplication With One Click?
Mar 21, 2014This is what I ended up with and it is not what I want.
How do I convert this to an applet that would run independently on a desk top out of all these shells?
[URL]
How To Add Item To Combobox When Click A Button
Apr 3, 2014Question: How can I add an Item to a combobox when I click a button?
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