Moving 2 sliders together

Question

I am currently making a program for school where I have to lock the ratio while adjusting JSliders.

I could not figure out how to make one slider change with the same value while changing the first slider. I want to change the sliders at a 1:1 ratio, so if I slide width up 5, the length will also go up 5, but I couldn't figure out how to find a constant difference to calculate when I change the value.

Answer 1

In your code you are setting length value based on length.getValue, but you want length to be set as width changes and vise versa. So I suggest that you set length like length.setValue(width.getValue());

 if(lkRatio.isSelected() !=true){
    tempw = width.getValue();
    templ = length.getValue();
    diff = width.getValue() - length.getValue();
}


if(lkRatio.isSelected()){

  if(source == width){
    length.setValue(width.getValue() - diff);
  }

  if(source == length){
       width.setValue(length.getValue() + diff);
  }
}