Is it a good practice to have parameter that is a global variable?

I am an AP java student and while working on a project I wondered if it is a good practice to have a parameter that is a global variable. If you're wondering why I would want to do that well is so I wouldn't have to do this:

public class Circle {
private DrawingTool pen;
private SketchPad paper;

private double myX;
private double myY;
private double myWidth;
private double myHeight;

public Circle(double x, double y, double width, double height){
    paper = new SketchPad(500,500);
    pen = new DrawingTool(paper);

    x = myX; //I don't want to have to assign this every time
    y = myY; //like here
    width = myWidth; // and here
    height = myHeight; // and here
   }
}

is it allowed to just do the following:

    public Circle(double myX, double myY, double myWidth, double myHeight){
    paper = new SketchPad(500,500);
    pen = new DrawingTool(paper);
   }
}

and every time I pass the arguments to the parameter they will automatically be assigned to the global variables?