Question

The problem:

Write a method that takes in an array of salary values and a double
rise rate, to calculate and return the array of salaries after they
are raised. If, for example, the rise rate is 1.07 and one has the
salary of £20000, then after raising the salary is 20000 X 1.07 =
21400.

Please note: it is not a home work but past exam questions from Software & Programming 1, Birkbeck, University of London.

So far I have but I don’t think it’s quite correct, as after compiling, I need to click on inspect.

public class salary
{
    public static double [] salary ()
    {
        double [] salary = {20000};
        riseRate = 1.07;
        for (int i = 0; i<salary.length; i++)
        {
            salary [i] = salary[i] * riseRate;
        }
        return salary;
    }
}

Answer 1

Write a method that takes in an array of salary values and a double
rise rate

public static void foo(double[] salaries, double riseRate){...}

return the array of salaries after they are raised

public static double[] foo(double[] salaries, double riseRate){...}

If, for example, the rise rate is 1.07 and one has the salary of
£20000, then after raising the salary is 20000 X 1.07 = 21400

public static double[] foo(double[] salaries, double riseRate){
    for(double salary : salaries){
        salary *= riseRate;
    }  
    return salaries;
}

All the information you need to construct this simple method is right there.