If I increment a variable within a switch case how do I get it to increment outside as well?

I found solutions to my issues. In case this helps others in future here is what I came up with. I am sure there are faster ways but this is what I used within the limits of my CS class:

  import java.util.*;
  import java.text.*;

  public class HR{
       public static void main (String arg [ ]) throws Exception {

  final int SIZE = 100; // Constant used so changing array size is easier 
  int realSize = 0;
  int index = 0;
  int option = 1; 
  int enumb = 0; // variable used in switch case 1
  int delEnumb = 0; // variable used in switch-case 2
  double salary; // variable used in switch case 1
  double moreThanSalary; // variable used in switch-case 3
  String name; // variable used in switch case 1
  boolean isEqual = false; // variable used in switch case 1 & 2
  boolean isEmpty = true; // variable used in switch-case 4
  boolean isNotMore = true; // variable used in switch-case 3

  Employee[] employees = new Employee[SIZE]; // creates empty array 'employees' and sets size to 100

  while (option != 0) {
     
     try {
        // Printing statements displaying menu on console
        System.out.println("\n**********MENU**********");
        System.out.println("1: Add Employee");
        System.out.println("2: Delete Employee");
        System.out.println("3: Display Employee(s) Earning Salary higher that you specify");
        System.out.println("4: Print all employees info");
        System.out.println("0: Exit program");
        Scanner input = new Scanner(System.in);
     
        System.out.print("\nEnter your selection : "); // Gets user input
        option = input.nextInt(); // Stores user input
        
        switch (option) {
           case 1: // add a new employee
                             
              Scanner scanint = new Scanner(System.in);
              Scanner scanstr = new Scanner(System.in); 
              System.out.println("\nYou have selected to add a new employee");
              System.out.println("\nEnter ID: "); // Gets uer input
              enumb = scanint.nextInt(); // Stores user input
              // Checks through current contents of array to see if enumb already exists
              for (index = 0; index < employees.length; index++){
                 // Skips empty (null) elements of array 
                 // && runs if the user entry matches a previous employee id then error message prints
                 if (employees[index] != null && employees[index].getEnumb() == enumb){ // == because it's primitive datatype
                    // 
                    System.out.println("\nEmployee ID already exists");
                    isEqual = true;
                 } // closes if statement
              } // closes for loop 
              // Will only run if the for loop above didn't find a matching employee ID number
              if (isEqual == false) {
                 System.out.println("Enter salary: "); 
                 salary = scanint.nextDouble(); // stores user input
                 System.out.println("Enter name: "); // Gets user input
                 name = scanstr.nextLine(); // stores user input
                 employees[realSize]= new Employee(enumb, salary, name); // creates object in employees array
              }
              break; // returns the user to the menu
              
           case 2:
              isEqual = false;
              System.out.println("\nYou have selected to remove an employee");
              Scanner scanId = new Scanner(System.in);
              System.out.println("\nEnter Employee number: ");
              delEnumb = scanId.nextInt(); // stores user input
              // Checks if the number the user has enteres is within the Employee ID range
              if (delEnumb >= 10001 && delEnumb <= 99999){
                 // Loops through employees array to check all NON null entries to find one that matches 
                 // and deletes it
                 for (index = 0; index < employees.length; index++){
                    if (employees[index] != null && employees[index].getEnumb() == delEnumb){ // == because primitive
                       employees[index] = null; // 'deletes' it by setting array element to null
                       System.out.println("\nEmployee entry has been deleted");
                       isEqual = true;
                    } // Closes if statement
                 } // Closes for loop
                 // Prints in case the ID number the user enters doesn't yet exist in the array
                 // Returns them to the menu
                 if (isEqual != true) {
                    System.out.println("\nThere is no current employee with that number.");
                 }// closes if statement
              }// Closes if statement
              else {
                 // Prints if the user has entered a number outside of the range then returns them to the menu
                 System.out.println("Your selection is outside of the range 10001 to 99999. "
                                   +"You will now be returned to the menu.");
              }// Closes else statement
              break; // returns the user to the menu
        
           case 3: // runs is the user selects the salary search option
              System.out.println("\nYou have selected to search through and find employees "
                                +"\nwhose salary is more than an amount you provide.");
              System.out.println("\nEnter Salary amount: ");
              Scanner userInput = new Scanner(System.in);
              moreThanSalary = input.nextDouble(); // Stores user input of double size
              // Used to help format the dollar amount the user entered to it looks nice
              DecimalFormat myFormatter = new DecimalFormat("$###,##0.00"); // used to format the $ amount nicely
              String output = myFormatter.format(moreThanSalary);
              // Print to let user know that the following text are employees that earn over the amount they requested
              System.out.println("\nNext you will see the employees that make over " + output + ":"); 
              // Loops through the array to search through salaries
              System.out.println("============================");                  
              for (index = 0; index < employees.length; index++) {
                 // Only searches NON null elements and prints out entries where the employee 
                 // earns over the specified amount the user inputed
                 if (employees[index] != null && employees[index].getSalary() > moreThanSalary){
                    System.out.println(employees[index]);
                    System.out.println("============================");
                    isNotMore = false;
                 }// closes if statement
              }// closes for loop
              // Will print if the amount that the user entered is more than any current employee salaries
              if (isNotMore != false) {
                 System.out.println("\nNo employees earn over " + output + ", time for a raise!");
              }// closes if statement
              break; // returns the user to the menu
        
           case 4: // Will run if the user chooses to print out all employee info
              for (index=0; index < employees.length; index++){
                 // Skips entries that are empty (null) 
                 if (employees[index] != null){
                    System.out.println(employees[index]);
                    isEmpty = false;
                 } // closes if statement
              } // closes for loop
              if (isEmpty != false) {
                 System.out.println("\nThere are no employees currently in the system. ");
              }
              break; // returns the user to the menu
              
           case 0: // Will run if the user chooses to exit the program
              System.out.print("\nYou have selected to exit the program. Thank you!");
              break;
              
           // Will run if none of the above cases execute (user enters a # less than 0 or more than 4)
           default: 
              System.out.println("\nSorry, you have entered a number other than 1, 2, 3, 4 or zero. \nTry Again.\n");
              break; // returns the user to the menu
        } // closes switch
     } // closes try
     
     // prints error message if user enters something other than an integer
     catch (InputMismatchException ime) {
        System.out.print("\n\t\t\t\t  ***Error*** \nThat entry was not an integer! Try again :)\n");
        continue;
     } // closes catch  
     // prints if the user enters something that triggers my custom exception
     catch (EmployeeException ee) {
        System.out.print(ee.getMessage());
     } // closes catch    
     realSize++; // here so that future entries are put in the next element
  } // closes while   
 } // closes main
} // closes class