another java program error..it says operator can not be applied to

[bonjing]

java.lang.double, java.lang.double!!! help! import java.io.*;public class ThirdProgram{ public static void main(String args[]) throws Exception{String sNumber;Double dNumber, dSquare, dCube;BufferedReader br = new BufferedReader(new InputStreamReader(System.in));System.out.print ("Input an integer: ");sNumber = br.readLine();dNumber = Double.parseDouble(sNumber);dSquare = dNumber*dNumber;dCube = dNumber*dNumber*dNumber;System.out.println ("The square of" + dNumber + "is" + dSquare);System.out.println ("The cube of" + dNumber + "is" + dCube);}}whats the problem with this one??it says operator can not be applied to java.lang.double, java.lang.double

[prashant_1608]

Use getDoubleValue() while performing any mathematical operation on it like below:dSquare = dNumber.getDoubleValue() * dNumber.getDoubleValue();