[jpanel] Forum Topics

I need some help. I'm trying to create a number pad like a cellphone that captures user input by pressing buttons in a panel on the left and displaying what the user punches in the top panel. Then I have a clear button in the panel on the right to …

Good Day... the problem is that the Jbutton is not displaying in my Jpanel. can you help me, this will help me a lot, Thanks Here's the code [CODE] import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.net.URL; import javax.swing.JButton; import javax.swing.JOptionPane; public class GameBoard extends JPanel implements ActionListener { JButton …

I want to redraw a JPanel while my program is running. Here's a fragment of my code: [CODE]public class Graph extends JPanel{ public void redrawSomething() { getGraphics().drawRect(15, 5, 20, 5); repaint(); }[/CODE] I tried to call "redrawSomething" but nothing happend. How do I fix it? Is something wrong?

Hi, I have a jFrame with a couple of jLabels, designed in Netbeans so most of the code is generated. If I want to change the text of the label, I use .setText() inside my jFrame and it works great. Now here's the problem. If I just make a String …

I'm trying to remove a JButton from a JPanel but my code does not work. Any help is appreciated. This is the JButton. Problem is the line 25 I guess. [CODE] class SquareButton extends JButton implements MouseListener { String text = null; GameArea ga = null; public SquareButton(GameArea ga) { …

Hi you all! I hope someone here will help me, i have workt with my java-program for 14 hours and i cant get it right. Im sure im on the right way but i cant get i all right. ok.. first i have to create a dice-class that generates random …

I am trying to change the background color of the JPanel every 3 seconds (3000 ms) when I click START button till I press STOP button. [CODE] import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.Random; class TimerBackground implements ActionListener { JFrame frame; JPanel panel; JButton btnStart; JButton btnRed; JButton btnGreen; …

I have a [ICODE]JFrame[/ICODE] window to which I am trying to add 3 panels. One panel is for input (text areas and their labels which I already have arranged within the panel), one is for a set of buttons, and one is for output. I want the the input and …

I need to add a border around the Size label and the small, medium and large buttons so I thought I would add them into their own Panel and then add that panel to the mainPanel but when I do that they do not show up. What am I doing …

I am having a problem with left alignment after adding a second JPanel. Both JPanels are using the BoxLayout with the first set to Y_AXIS and the second set to X_AXIS. If you comment out the add(twoPanel) it results in the desired left alignment. I don't understand why the alignment …

I have a JFrame with 2 JPanels...my problem When I attach one of the JPanels to the JScrollPane object, it encompasses the whole JFrame, instead of just the JPanel I said to attach to. The scrollBar goes all the way up to the top of the JPanel I don't want …

I'm in the process of creating a program that would change a background color by pressing a button. Now, I already have everything set up. The background image is just an image of a rainbow, and when a button is clicked, it would change the whole background color. The thing …

Hi everyone, For a group assignment we have to develop a property trading game similar to monopoly. At the moment we have the GUI developed as well as a basic idea of how to go about doing it but was wondering if anyone could help a bit!:S Is it possible …

i'd like to ask how one can get rid of all the components in a JPanel (buttons, labels, comboboxes etc), so that you can add new components (at run time that is)

I wanted to know if its possible to change the text of a JTextArea or JTextPanel from another method and if so how?

Hi! Basically what im trying to do is to add a JPanel onto another JPanel that has painted graphics on it using the paintComponent() method. But the JPanel I am trying to add is not shown because it is covered up by the JPanel w/ Graphics on it. How can …

I want to load an image for each different shoe and I'm using JLabel to help me do this. I put the image's path in the JLabel constructor but when the code runs, it doesn't display any image. Instead of an image, the image path is written. appreciate any help …

Basically what I would to know is you have a button on one JPanel, and when the user clicks it, they are re-directed to the other JPanel. I would appreciate it if i could have some sort of hint or know about the overall structure of implementing this. Thanks,

I'm trying to make family tree webapplet, to test it out outside of the site I just used JFrame. I've used GroupLayout to set up things, but I'd like to have a fixed size, now it just takes up the size of the JFrame. NewClass.Java [CODE=java] /* * NewJPanel.java * …

Hi, I'm trying to use JAVA GUI for first time. I've got a Jframe that when loaded adds a jpanel. the problem is it will not show any swing controls that get added to the jPanel. I'm using netbeans 6.9.1. any idea to why is happerning would be greatful [CODE] …

Hi, I'm creating a component for a process flow charting system, and have come to the point where I need to implement D&D between components. I have a panel containing expanding lists, where each list item represents a process definition. What I need to do is the following. Altogether, I'm …

I'm making a JPanel for a game. I want the background to be an imported image, so I set up a ClassLoader to import the image and converted that to a URL. However, that URL appears to be null, as when I try to put the panel into a JFrame, …

I'm trying to list a bunch of buttons vertically, but am having problems even getting that much done. I'm pretty sure I have the scroll pane working (it just isn't being used yet so I can't test it). This is part of an assignment so I'd prefer not to post …

Hi, I'm having trouble with my Java code. It's meant to read in from a csv file and update the elements on the GUI to reflect this e.g. as it reads in one line, images and text appear on the GUI reflecting the data. Anyway, to get the GUI to …

Hello there I am looking for some help. How can I go about creating a list of JPanels in Java? I want them all to have subcomponents, to be created dynamically, and be able to return events. How can I do this? I have checked and I know I will …

Hi, I'm working on a dissertation based around graph visualization. I need to make a GUI for my program but I am having trouble getting the JPanels to display what is required. My code so far: [code] //Class to create the GUI import java.awt.GridBagLayout; import java.awt.GridBagConstraints; import java.awt.Component; import javax.swing.JFrame; …

Hi guys, I'd really appreciate it if someone could look over my code and tell me why my JComboBox isn't working. I've got 3 Classes, 2 for the GUI, one for the standalone which the array is contained in. [CODE]import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JFrame; import javax.swing.JComponent; import javax.swing.SwingUtilities; import …

I don't know what to do... I've been trying for weeks to figure out the problem. You see, I'm supposed to make a game, as a project for school. Since it's going to be a rather large game, I decided not to flood the main file with a bunch of …

Hello all, I'm trying to add a multiple JTextFields onto a single JPanel that has been already initialized thanks to the Design tool from the JFrame. I'm pretty sure that I already added them and I'm not getting any errors but they aren't showing up when I execute the program. …