//Calculating blackVolatility using maturity as 12 days after today and strike as 18
volatility1 = varianceSurface.blackVol(date12.clone(), 18);
System.out.println("Interpolated BlackVolatility on BlackVarianceSurface = "+volatility1);
//Calculating blackVolatility using maturity as 22 days after today and strike as 33
volatility2 = varianceSurface.blackVol(date22.clone(), 33);
System.out.println("Interpolated BlackVolatility on BlackVarianceSurface = "+volatility2);
//Calculating blackVolatility using maturity as 32 days after today and strike as 45
volatility3 = varianceSurface.blackVol(date32.clone(), 45);
System.out.println("Interpolated BlackVolatility on BlackVarianceSurface = "+volatility3);