I am looking for sliders with two buttons so that the user can move them separately or both together, similar to the picture in the picture for use in Java. Any side panel with two buttons (two indicators). He exists?
This is called the range slider. Here it is discussed in another thread: Range slider in Java
Also here is the API that the JRangeSlider Swing object provides: http://prefuse.org/doc/api/prefuse/util/ui/JRangeSlider.html
I have never used it, but it looks like what you want.
I would suggest checking out JIDE (open source components), I know there is a range slider with two buttons
Sorry for the late reply:)
I recently implemented JRangeSlider without custom drawing code, so it will always look like regular JSlider, but with two buttons.
https://github.com/andronix3/SwingHacks/blob/master/com/smartg/swing/JRangeSlider.java