public void print()
	{
		if (this.vector.length == 0 || this.vector[0].length == 0) return;
		for(int i=0; i<vector[0].length;i++)
		{
			for(int j=0; j<vector.length;j++)
				if(vector[i][j]==null) System.out.printf("( 0, 0) ");
				else System.out.printf("(%2d,%2d) ",vector[i][j].getX(),vector[i][j].getY());
			System.out.printf("\n");
		}
	}