I have this swing code here:
//dark elixir
Panel panel_4 = new Panel();
config.add(panel_4);
JLabel del = new JLabel("Starting DE: ");
panel_4.add(del);
[code]...
It all displays well etc but if I change the value of one of the fields then I'm not allowed to change the JCombox field anymore.
I am very much new to Java. I have just started learning event handling. Currently I am learning about Key Events. And am learning by doing. Well that is how one could learn anything in fact. I want to write a program in which the currently loaded image in the panel of a frame changes upon a key press say "Enter" or any other key.
View Replies View RelatedOk, so I am trying to learn about JFrames and JPanels. I have figured out buttons, layouts, etc. What im having trouble with is accessing the label object from the ButtonHandler class since it is static and I need my JLabel to be non-static so that it can change. Basically, I want JLabel to change to a pre-determined text string once a button is pressed. Here's what I have so far
package makewindow;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
[code]....
I'm making a project about school management system , i have a jframe to set marks and inside the jframe i have a jtable which is connected to sql database , in the jframe I have a JCombobox with 6 different subjects and in my database i have created 6 tables for the subjects and if any of the subjects are clicked then the jTable will connect to database and change the table to that subject , after it is changed if you double click on any row and insert a value then it will automatically update the table in the database , but my problem is that if I select the first option from the jcombox which is English and edit the values then it works fine , but if I select any other option e.g Math or Science , then I try to edit the table then it edits the English table , I commented the English option in the code to see what happens and I saw that it edits only the first option and if you try to change the subjects and edit than it edits the first subject in the combobox , so how can I solve this ?
CODE:
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JComboBox;
import javax.swing.JTable;
[code]....
The title says it all and i'm a fairly new java programmer but here is the code:
package TestVersion;
import java.awt.Color;
import java.awt.Graphics;
[Code]......
I think i need a variable or something oh and here is the 2 other classes, the keylistener one:
package TestVersion;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
[Code].....
I am able to update the array holding the items but I don't know how to refresh the JList to include all the new items in the array.
Code for GUI:
import java.awt.ScrollPane;
import java.awt.event.ActionListener;
import javax.swing.*;
public class ListView extends JFrame{
HobbyList stuff = new HobbyList();
[Code] .....
I have a class that implements JComponent and draw a rectangle and if a key pressed(for example UP) I want to draw it up, and then when down key pressed to draw it down... But I want not only to disappear, but somehow to move, so the user can see the rectangle moving...
View Replies View RelatedI have a VBox with 20 buttons and I have this style applied (menu.css) (only for VBox wrapper):
.button:focused {
-fx-background-color: #0768A9;
-fx-text-fill: #FFFFFF;
}
But when I pressed other button outside the VBox the style disappears, because the other button get the focus.
How I can do to keep the last button pressed with a custom style? (Only for buttons containing the VBox).
Okay, gotta be able to move the image when a key is pressed. When I test it, the image moves, but leaves the old image behind.
package Game;
import java.awt.Component;
import javax.swing.JOptionPane;
public class Game
{
private Grid grid; //holds the grid used to store and display images
private int userRow; //keep track of which row the user-controlled image appears in
private int msElapsed; //keep track of the total amount of milliseconds that have elapsed since the start of the game
[Code] ....
Here is what I was given on instructions:
Complete the handleKeyPress method. Write the following line of code in the handleKeyPress method to check for a key press:
int key = grid.checkLastKeyPressed();
If the user pressed the up arrow (key == 38), move the user's image up one row (unless the user is already in the top row). Likewise, if the user pressed the down arrow (key == 40), move the user's image down one row (unless the user is already in the bottom row). Either way, make sure to update userRow.
Movement of the image can be accomplished by changing the value of userRow. Study how the initial image is displayed in the game constructor, then
Set the current image location to null
Update userRow to the new location and,
Set the image in the new value of userRow.
You should be able to move the user image up and down, and you should be prevented from moving the image off the screen.
I want to run a few things in my main when a JButton is pressed but can't work out the best way to do it. Here's the code in the main.
public static void main(String[] args) throws FileNotFoundException, ParseException, InterruptedException{
Map m = new Map("defaultMap");
GameLogic g = new GameLogic("defaultMap");
GodsEyeView gev = new GodsEyeView(g, m);
gev.initialRun();
//Want to run this when a button is pressed.
HumanUser h = new HumanUser(g);
playerGUI gui = new playerGUI(h);
gui.run();
gev.run();
}
The goal is to desplays circles (max of 30) of fixed radius = 20, with the rightmost circle drawn in blue and left most circle in red and the rest are in white. The center is determined by the location of the point where the mouse is pressed. the number of circles is equivalent to number of mouse has been pressed_ the circles will be drawn only when you push the "draw" button.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.JPanel;
public class CirclePanel extends JPanel {
private final int WIDTH = 500, HEIGHT = 300;
private final int RDIUS = 20;
private final int MAX = 30;
[code]...
a code that will add 1 to a variable and store it anytime key "p" is pressed on the keyboardKeep in mind
Here's what i have....
import java.util.Scanner;
public class Main {
public static void main(String args[]){
Scanner kin = new Scanner (System.in);
int pa, ma;
[Code]...
I cant apply my knowledge of the switch to modify this program.
What i need is that the program runs the same but i can press q to stop the program and it will continue in a loop otherwise. repeating the same process i.e displaying the characters entered until q is pressed.
How do i do it? I think i need to make use of do and while but how to apply those in this case.
I have a filechooser that works how it should and if anyone enters anything with a dot that isnt .xml it shows an invalid file name message. However when I dont choose a file and press cancel it still says that because when my boolean hits false it's the first thing it hits in that section of code.
if(!writeSuccess)
{
//display output messages in JOptionPane
JOptionPane.showMessageDialog(null,"Error, file name invalid", "Error", JOptionPane.ERROR_MESSAGE);
} else {
JOptionPane.showMessageDialog(null,"Export successful", "Success", JOptionPane.INFORMATION_MESSAGE);
//close the form
me.dispose();
}
If I want it to just close down without it saying anything is there sort of if statement I could do that would prevent this? But if it is an invalid file name it will still show that message?
I am quite new to developing Applets in java. I recently made an applet that will play a particular sound whenever a button is pressed. The sound files are placed in the same directory as the applet class file and i access them by using
AudioClip clip=getAudioClip(getCodeBase(),"A.wav").
The Applet runs fine in the appletviewer but whenever I try to open it using any browser like Chrome,IE,Firefox the applet loads but sound isn't played. I checked the java console and it showed
"java.security.AccessControlException: access denied ".
My questions are:
1. How do I allow the applet to get access to those files?
2. When the Applet is running from the local file system why CAN NOT I access those resources via getCodeBase() ???
3. I googled and found that I can sign a JAR and that can have full access to the computer. But how do I create a JAR from an applet (which has no Main method) while it asks me to point to the main class in the manifest?
I'm trying to get the input of two jcomboBoxes for example if jcombobox 1 option 1 and jcombox box 2 option 1 is selected result = x
Here is my code:
comboDest1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
//
// Get the source of the component, which is our combo box.
//
JComboBox comboDest1 = (JComboBox) event.getSource();
[Code] ....
How would i achieve this?
So why is it that when I attach a KeyAdapter to a JTextField the code in the KeyAdapter will execute, but when I apply that same KeyAdapter to a JComboBox with its edit feature turned on it won't and, more importantly,
View Replies View RelatedI am making a game in java and i want to make a title screen. What I am trying to do is make a jpanel and load another jpanel when a button is pressed in one of the japenls. Here is the code for the runner
import java.awt.BorderLayout;
import javax.swing.JFrame;
public class Runner extends JFrame {
// Have these set up so they can be seen everywhere
public static final int GAMEWIDTH = 540;
public static final int GAMEHEIGHT = 710;
static boolean loading = false;
[Code] ....
here is the code for the jpanel that loads the other jpanel
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
[Code] ...
How do load a jpanel when a button is pressed in another jpanel
displaying COM port in Combo box , see my code below , it does not show any error but it does not show COM port in combo box , instead it shows the class name of Communicator with some garbage data .
Code :
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JComboBox;
import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import java.io.IOException;
[code].....
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
I am trying to set some serial port parameters here:
public synchronized void connect(String port, String rate, String data, String stop, String parity) throws Exception {
CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(port);
if (portIdentifier.isCurrentlyOwned()) {
System.out.println("Error: Port is currently in use");
} else {
CommPort commPort = portIdentifier.open(this.getClass().getName(),
2000);
[Code].....
To set the serial port parameters i need to use Integers instead of strings.
So, how i turn my string EG:
String[] baudRates = { "2400", "4800", "9600", "14400", "19200", "38400", "56000", "115200" };
into Integers for my combo box
I'm having an issue with using a JComboBox to select an item from a parallel array and displaying the correlating results in the same frame. Essentially, I have to add seven cities to a JComboBox drop down within a frame, select a city then display the population of that city in the frame with a label indicating the population. I have two issues:
1) my label text will not show up during execution unless I drag a corner no matter what width or height I make the frame.
2) I need to make the JComboBox selection correlate to the city population and display as a label, not having making that work using the getSelectedIndex() method.
I think I need to add an event listener for the combobox selection, not sure where to add that if that is the case. Here is my mess so far:
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JComboBox;
[Code]....
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);
}
I'm trying to populate my JComboBox with an Arraylist. Using two different classes, a GUI class (with the JComboBox - called it MainGui) and a class where I extract information from a database and put it into an ArrayList (which I call databaseconn).In my databaseconn class, I can print out the content of the ArrayList perfectly fine, but when I try to do it in my GUI class it just prints empty brackets "[]".(What I need it to do is to populate the drop down list in the JComboBox with the hotel information).Here's my code:
//The dataaccesslayer you should use for classes that deal with connection to the database
package dataaccesslayer;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
[code].....
I'm having an issue with using a JComboBox to select an item from a parallel array and displaying the correlating results in the same frame. Essentially, I have to add seven cities to a JComboBox drop down within a frame, select a city then display the population of that city in the frame with a label indicating the population. I have two issues:
1) my label text will not show up during execution unless I drag a corner no matter what width or height I make the frame.
2) I need to make the JComboBox selection correlate to the city population and display as a label, not having making that work using the getSelectedIndex() method.
I think I need to add an event listener for the combobox selection, not sure where to add that if that is the case. Here is my mess so far:
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class JPopulation{
public static void main(String args[]) {
[Code] .....
Can a JCalendar be used as an item. I cannot find and appropriate combodatepicker or at least one that looks like a standard combobox. I cannot get an answer from google search all i can get is how to add normal items.
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