Payroll (Tester class)

/**
   A class to calculate employee payroll using the
   Company interface and the Salaried and Hourly classes.

   @auth Dave Lastname
   @date 11/14/13
*/

import java.util.*;

public class Payroll
{
   public static void main(String args[])
   {
      Scanner scan = new Scanner(System.in);
      int numEmps = 0;
      ArrayList<Company> employees = new ArrayList<Company>();
      boolean go = true;

      while(go == true)
      {
         System.out.println("What do you want to do?");
         System.out.println("   1. Create a new employee");
         System.out.println("   2. Set pay");
         System.out.println("   3. Show weekly pay");
         System.out.println("   4. Show annual pay");
         System.out.println("   5. Show summary");
         System.out.println("   6. Quit");

         int num = scan.nextInt();

         if(num > 6 || num < 0)
         {
            System.out.println("ERROR: Bad option, please try again.");
         }

         if(num == 1)
         {
            System.out.println("What type of employee would you like to create (Salaried or Hourly)?");
            String typeInput = scan.next();
            while(!(typeInput.equalsIgnoreCase("salaried") || typeInput.equalsIgnoreCase("hourly")))
            {
               System.out.printf("Please enter either 'salaried' or 'hourly'");
               typeInput = scan.next();
            }
            if(typeInput.equalsIgnoreCase("hourly"))
            {
               System.out.printf("Please enter the name: \n");
               String name = scan.next();
               System.out.printf("Please enter the social security number: \n");
               String SSN = scan.next();
               System.out.printf("Please enter the rate of hourly pay: \n");
               double pay = scan.nextDouble();
               while(pay <= 0)
               {
                  System.out.println("Please enter a number > 0");
                  pay = scan.nextDouble();
               }
               System.out.printf("Please enter the average number of hours worked per week: \n");
               double avgHours = scan.nextDouble();
               while(avgHours <= 0)
               {
                  System.out.println("Please enter a number > 0");
                  avgHours = scan.nextDouble();
               }
               Hourly hourlyEmp = new Hourly(name, SSN, avgHours);
               hourlyEmp.setPay(pay);
               employees.add(hourlyEmp);
               numEmps++;
               System.out.printf("Employee " + numEmps + " has been created. \n");
            }
            else if(typeInput.equalsIgnoreCase("salaried"))
            {
               System.out.printf("Please enter the name: \n");
               String name = scan.next();
               System.out.printf("Please enter the social security number: \n");
               String SSN = scan.next();
               System.out.printf("Please enter the annual pay: \n");
               double pay = scan.nextDouble();
               while(pay <= 0)
               {
                  System.out.println("Please enter a number > 0");
                  pay = scan.nextDouble();
               }
               Salaried salariedEmp = new Salaried(name, SSN);
               salariedEmp.setPay(pay);
               employees.add(salariedEmp);
               numEmps++;
               System.out.printf("Employee " + numEmps + " has been created. \n");
            }
         }//end of case 1
         else if(num == 2)
         {
            Company emp;
            if(numEmps >= 2)
            {
               System.out.println("Which employee do you wish to use (enter 1 to " + numEmps + ")?");
               int empNum = scan.nextInt();
               while(!(empNum > 0 && empNum < numEmps))
               {
                  System.out.println("ERROR: Please enter number between 1 and " + numEmps + ".");
                  empNum = scan.nextInt();
               }
               emp = employees.get(empNum - 1);
            }
            else
            {
               emp = employees.get(0);
            }
            System.out.printf("How much would you like to set the annual pay to? \n");
            int pay = scan.nextInt();
            while(pay <= 0)
            {
               System.out.println("Please enter an amount > 0");
               pay = scan.nextInt();
            }
            emp.setPay(pay);
         }//end of case 2
         else if(num == 3)
         {
            Company emp1;
            if(numEmps >= 2)
            {
               System.out.println("Which employee do you wish to use (enter 1 to " + numEmps + ")?");
               int empNum1 = scan.nextInt();
               while(!(empNum1 > 0 && empNum1 < numEmps))
               {
                  System.out.println("ERROR: Please enter number between 1 and " + numEmps + ".");
                  empNum1 = scan.nextInt();
               }
               emp1 = employees.get(empNum1 - 1);
            }
            else
            {
               emp1 = employees.get(0);
            }
            System.out.printf("The weekly pay is $ %.2f", emp1.calcWeeklyPay());
            System.out.println(" ");
         }//end of case 3
         else if(num == 4)
         {
            Company emp2;
            if(numEmps >= 2)
            {
               System.out.println("Which employee do you wish to use (enter 1 to " + numEmps + ")?");
               int empNum2 = scan.nextInt();
               while(!(empNum2 > 0 && empNum2 < numEmps))
               {
                  System.out.println("ERROR: Please enter number between 1 and " + numEmps + ".");
                  empNum2 = scan.nextInt();
               }
               emp2 = employees.get(empNum2 - 1);
            }
            else
            {
               emp2 = employees.get(0);
            }
            System.out.printf("The weekly pay is $ %.2f", emp2.calcAnnualPay());
            System.out.println(" ");
         }//end of case 4
         else if(num == 5)
         {
            Company emp3;
            if(numEmps >= 2)
            {
               System.out.println("Which employee do you wish to use (enter 1 to " + numEmps + ")?");
               int empNum3 = scan.nextInt();
               while(!(empNum3 > 0 && empNum3 < numEmps))
               {
                  System.out.println("ERROR: Please enter number between 1 and " + numEmps + ".");
                  empNum3 = scan.nextInt();
               }
               emp3 = employees.get(empNum3 - 1);
            }
            else
            {
               emp3 = employees.get(0);
            }
            System.out.print(emp3);
            System.out.println(" ");
         }//end of case 5
         else if(num == 6)
         {
            go = false;
         }//end of case 6
      }//end of while loop GO
   }//end of main
}//end class