Re: Setting properties on similar objects simultaneously

From:
Tom Hawtin <usenet@tackline.plus.com>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 01 May 2007 20:11:05 +0100
Message-ID:
<4637907d$0$8719$ed2619ec@ptn-nntp-reader02.plus.net>
jackroofman@gmail.com wrote:

As you can see, there's only one unique line in the JButton part and
two unique ones in the JToggleButton part. There must be a way for me
to use ONE loop to do all the common ones and then differentiate
between the two objects for their unique properties. I haven't been
able to find any way to do this, however. Any ideas?


I would suggest putting all the common in a method:

     private void initButton(JButton button, int index) {
         button.setBounds(index*25, 5, 20, 20);
         ...
     }

You still have two loops:

         for (int i=0; i<5; i++) {
             JButton button = new JButton();
             initButton(button, i);
             ... JButton specific stuff...
             buttons[i] = button;
         }
         for (int i=5; i<7; i++) {
             JToggleButton button = new JToggleButton();
             initButton(button, i);
             ... JToggleButton specific stuff...
             toggles[i-5] = button;
         }

(I would also use List<> instead of arrays, and not duplicate my constants.)

You could always have two loops to create the buttons, then use a third
loop to do all the common stuff. Either creating an array/List of all
the buttons, or passing the arrays/Lists to a method.

Tom Hawtin

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