java

public static void main(String[] args)

{

// Create a 'switch' structure for menu

// option 1 -- call calcRadius method

// option 2 -- call calcArea method

// option 3 -- call calcCircumference method

// (all methods accept a Scanner and return a double

// display the double after it's returned)

int option;

Scanner kb = new Scanner(System.in);

option = displayMenu(kb);

while (option != 4)

{

// Your code goes here:

option = displayMenu(kb);

}

}