I have been asked by a charity in my home town to consult on getting a
computer system in to manage their rota of slightly over 300 volunteers
filling about 180 different duties (time slots) in a week.
The biggest problem they have without a doubt is getting the 60-80 year old

I have a scrollpane with vertical scrollbar set to show as needed (see
snippet below).  I'm trying to work out a reliable way of determining
whether the vertical scrollbar is showing.  I've tried calls to
isVisible, isShowing

I have an application where I would like to ask the user if (s)he wants to
cancel current action. The close is issued by clicking the [X] mark in the
(XP) Window. I use WindowAdapter.windowClosing in order to respond to this
action.

I have a input dialog that gets the password. When i enter a value and
click OK it works fine. But when i click Cancel i get a Null Pointer
Exception. How to handle the Cancel button
Any help in this regard would be greatly apprecialted

Hi folks,
Please explain me why this two program behave differently.
The only difference is in the use of JButton and JLabel, respectively.
Here is the first with JButton:

This is a GUI question relating to use of pack().
Generally when I create my gui's using GridBagLayout() and call
pack, each component is created very close to each other without
any gap in between.

ciao ho un problemino con un interfaccia grafica.
Ho un pannello sul quale richiamo Graphics(poich? devo disegnarci).
Il mio problema ? che molto spesso il disegno va fuori dallo schermo, allora
ho pensato di inserire il pannello dentro ad un JScrollPane. ma il problema

I have the following problem:
One swing application is executed in the following way:
- C++ code is executed via windows service
- this C++ code runs a batch file.

Hi Gurus,
I am implementing simple drag n drop for mutabletreenodes between
JTrees. I simply want to copy nodes from on JTree to another by
dragging them over.

I have seen programs, in which a programmer adds components
to panels and finally adds panel to JFrame's content pane.
I dont see any difference if the same program is performed by
directly adding component to the JFrame.

I  assign an ActionListener or a MouseListener to a JButton and later
in the programm I disable it (bt.setEnable(false)).
It becomes gray but I can click on the (J)Button.
That happends on Linux

I have constructed a GUI with a JButton and a JTextArea.
When the JButton is pressed I want to execute a method that reads
information from somewhere and prints it to JTextArea.
The method that reads the information takes a few seconds to compute.

I have made a custom date chooser control using a JButton and a
JDialog. I am using the JDialog like a popup menu i.e. setUndecorated
( false ) and it pops up just below the button. As soon as a date is
selected, it disposes itself.

...
       FileDialog fileDialog = null;
      if (fileDialog == null) {
        fileDialog = new FileDialog(this,"Otvori");

I want to print a JTable with many rows and columns; I recently read
an article (http://java.sun.com/developer/onlineTraining/Programming/JDCBook/advprint.html)
that describes, how to print a JTable an multiple pages, but this
JTable only has many rows, but not many columns, so not ...