I use in my NetBeans GUI next two check-marks and statemonitor:

JCheckBox skipIndexPage = new JCheckBox("Skip thumbnails pages"); 
 
JCheckBox autoPlaySlideShow = new JCheckBox("Start slide show automatically if index page is skipped");
 
new StateMonitor() {
  public void onChange() {
      autoPlaySlideShow.setEnabled(skipIndexPage.isSelected());
   }
}.add(skipIndexPage).done();

This works fine if I check or clear check-box skipIndexPage

However if I open the project and go to the slide settings page, autoPlaySlideShow is enabled while skipIndexPage is cleared. This is incorrect, the autoPlaySlideShow check-box should be be disabled if skipIndexPage is cleared and autoPlaySlideShow should be be enabled if skipIndexPage is checked.

What initialze code should I use to get that done?

Or, since it can tackle complex conditions and multiple target fields, use enable:

new StateMonitor() {
	public void onChange() {
		enable(skipIndexPage.isSelected(), autoPlaySlideShow);
	}
}.add(skipIndexPage).done();

That's what the .done() is for. It sets the enabling on autoPlaySlideShow upon skin loading, taking the skin default for skipIndexPage, or taking the saved value of skipIndexPage from the project file. The .done() triggers the onChange, in effect.

It has worked this way for over a decade. No other code required.

I could solve this problem by moving the check-box "Start slide show automatically if index page is skipped" outside the slide show parameters panel.

Good idea, I never used that in NetBeans. I tried this:

                            new StateMonitor() {
                                public void onChange() {
                                    autoPlaySlideShow.setEnabled(skipIndexPage.isSelected() && enableSlideShow.isSelected() ); 
                                    System.out.println("2 enableSlideShow: " + enableSlideShow ); 
                                }
                            }.add(skipIndexPage).add(enableSlideShow).done();

But I don't get true of false, but this:

2 enableSlideShow: javax.swing.JCheckBox[,9,144,119x23,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@36101618,flags=360,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=2,bottom=2,right=2],paintBorder=false,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=Enable slide show]

How can I print just the value of enableSlideShow ?

Thnks!