This is 3/3 parts question complete.

//add left Pane and canvas to Circle Pane //---- //Step 3: register the source nodes with its handler objects //---- } // Step #2 (A) - MouseHandler private class MouseHandler implements EventHandler { public void handle (MouseEvent event) v/handle MouseEvent here V/Note: you can use if (event.getEvent Type () == MouseEvent . MOUSE DRAGGED) //to check whether the mouse key is dragged or released, etc //write your own codes here // ---- Blend MouseHandler // Step #2 (B) - Primary and secondary color handler private class PrimaryColorHandler implement EventHandler_ActionEvent> 1 public void handle (ActionEvent event) { //Write your own code here 11---- }//end PrimaryColorHandler //Step #2 (C): background color handler //Write a private class called BackgroundColorHandler that handles the background //color changes //--- //---- //Step #2 (D): handle the stroke width private class WidthHandler implements EventHandler 1 //write your own code //---- 11--- //end of WidthHandler } //end of Circle Pane //add left Pane and canvas to Circle Pane //---- //Step 3: register the source nodes with its handler objects //---- } // Step #2 (A) - MouseHandler private class MouseHandler implements EventHandler { public void handle (MouseEvent event) v/handle MouseEvent here V/Note: you can use if (event.getEvent Type () == MouseEvent . MOUSE DRAGGED) //to check whether the mouse key is dragged or released, etc //write your own codes here // ---- Blend MouseHandler // Step #2 (B) - Primary and secondary color handler private class PrimaryColorHandler implement EventHandler_ActionEvent> 1 public void handle (ActionEvent event) { //Write your own code here 11---- }//end PrimaryColorHandler //Step #2 (C): background color handler //Write a private class called BackgroundColorHandler that handles the background //color changes //--- //---- //Step #2 (D): handle the stroke width private class WidthHandler implements EventHandler 1 //write your own code //---- 11--- //end of WidthHandler } //end of Circle Pane