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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
GUI design - Sketch it out first! (Java / Swing example)

"A picture paints a thousand words" ... and so it is when you're planning a graphic user interface, and implementing it. Yesterday, I picked up an old example of a dialer written in Java - you can see the actual window it generates on the right - and was looking to work out how it hung together.


A JFrame called Dialer has a Container called cp contains two Swing Jpanels called upper and lower, which are layed out with gridLayouts. Upper contains 3 components - Jlabels, one of which has no name and the other is called Result, and a JButton called OK,

The lower JPanel contains a further 12 JButtons, each of which has a temporary name of current assigned to it as its being defined ....


I did say that "A picture paints a Thousand words", didn't I? All this is shown in the diagram to the left. If you would like to see the source code, its available in full here
(written 2007-08-30, updated 2007-09-04)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
J902 - Extending Graphics in Java
  [1325] Java - Client side applet applications as well as server side - (2007-08-29)


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