public EmptyBorder(int left, int right, int top, int bottom) { this.l = left; this.r = right; this.t = top; this.b = bottom; }
public EmptyBorder(int top, int left, int bottom, int right) { this.top = top; this.left = left; this.bottom = bottom; this.right = right; }
    public EmptyBorder(int left,		int right,		int top, 		int bottom)    {	this.l = left;	this.r = right;	this.t = top;	this.b = bottom;    }