Scientific Method - Compute Base Times 10 To Exponent

This is what I need to do: Write a method called scientific that accepts two real numbers as parameters for a base and an exponent and computes the base times 10 to the exponent, as seen in scientific notation. For example, the call of scientific(6.23, 5.0) would return 623000.0 and the call of scientific(1.9, -2.0) would return 0.019.

This is the method I have written:

public double scientific(double num1, double num2); {
double base = num1;
double exp = num2;
double scientific = base * Math.pow(10, exp);
System.out.println(scientific);
return scientific;
}

These are the following error messages I received when trying to compile the code:

Line 4
missing method body, or declare abstract
missing method body, or declare abstract
public double scientific(double num1, double num2);

[Code] .....

How to fix each error?