All Questions
27 questions
0
votes
0
answers
34
views
Custom popup don't always get focus
I try to basically implement my own combobox for Swing, because JComboBox has some behavior that doesn't suit my requirements and what I need to override is private, so...
Anyway, I tried making a ...
- 267
0
votes
1
answer
153
views
Swing wait() and notify() on JDialog, the dialog does not show its components
I have a mouse listener that gets invoked when I move the mouse in the application window.
In the MouseEntered method, I invoke a ThreadB as such:
@Override
public synchronized void mouseEntered(...
- 1
0
votes
0
answers
124
views
How to link two components with a wire in Java Netbeans
I'm making a simulator in Java and I have a plugboard where I have to connect two components of the plugboard with a wire. I was thinking to make the plugboard where each connector to be plug is a ...
- 13
0
votes
0
answers
36
views
How to get Matisse GUI to show up my custom added components? [duplicate]
I'm making my really first "graphic" program in Java and almost all the components I used were added by dragging them into the NetBeans GUI, that's okay.
However, I had to add some code into a new ...
3
votes
0
answers
1k
views
Java - Wait for component to be shown
UPDATE #3: After madProgrammer's suggestions, maybe the timed solution is the best. But no answer has been given to this strange behaviour.
I understand the fact that components are not shown ...
- 631
0
votes
1
answer
2k
views
Java - Update size of component after resize event
I have this simple code:
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt....
- 631
5
votes
1
answer
2k
views
What is a component's baseline in Java
Very simple question:
What is a component's baseline in Java?
The documentation does not provide an answer as to what the "baseline" is, just describes its use by LayoutManagers. Yes, the answer is ...
- 686
0
votes
2
answers
70
views
How can a JTextArea's properties be updated by an event?
I have made this simple text editor program but can't figure out how to change GUI component's properties while the program is running.
Suppose this is a part of my Text Editor's source code:
...
- 729
2
votes
1
answer
1k
views
What determines component visibility in Java?
I'm writing a Java GUI program that uses a JFrame object and several JPanel objects. The JPanel objects use the paint() and repaint() methods, and some of the JPanel ojbects have JLabels and JButtons. ...
- 1,497
0
votes
1
answer
394
views
Loading Panel with Image in jFrame: Component must be non-null
Hello I'm a newbie here,
I want to add pictures in my JFrame. I used the Grouplayout and tried to load my Image with help of this JPanel-Class.
But when I use ".addComponent(Image)" it gave me the ...
- 3
2
votes
1
answer
1k
views
Java JPanel repaint() issue?
I'm kind of new to GUIs. I created this simple app that paints an oval with different color every time a button is pushed. but when ever I call the JPanel's repaint() it doesn't just repaint the panel'...
- 1,653
0
votes
2
answers
2k
views
Swing GUI doesn't update during data processing
I'm having a problem where my Swing GUI components aren't updating for me while the program is busy. I'm creating an image editor and while heavy processing is happening, I try to change a "status" ...
- 1,347
0
votes
1
answer
548
views
Java Gui components do not appear in the JFrame
i have a strange problem which may a problem with eclipse that i use:
i want to programm a calculator but the components which should appear in the Jframe, are not there! The textfield do not appears ...
- 1,715
0
votes
2
answers
1k
views
Java make components talk to each other
Let's say I have a gui, and the gui is composed of two parts where each part has its own class.
So one class contains a JLabel.
And second class contains a text field with a submit button.
How would I ...
- 6,486
3
votes
1
answer
2k
views
Java own components visually connecting per drag and drop
I'm working on a software solution for a small workflow editor. For this I created an own JPanel with some functionality like deleting itself or editing the main information.
This is how it looks:
...
- 4,275