How To Automatically Increment ID And Then Display Only One ID In Report

The program shall assign a new employee ID to the employee and display it on the screen.

The employee ID shall be generated by adding 1 to the largest employee ID already in the employee.txt data file.

You can see I've tried variations of identification++ but have not been successful. I've also tried to get the last or the highest identification in the arrayList but have not done that right.

public static void addEmployee() {
String firstName = Validator.getString(
sc, "Enter First Name: ");
String lastName = Validator.getString(
sc, "Enter Last Name: ");
int identification = 0;

[Code] ....

I also can display all of the employees their identifications and their punches but I cannot narrow it down to searching one employee and displaying information for just the one.

-If the selected value is ‘I’, prompt the user to enter the employee’s ID number.
-If ‘I’ is selected the display shall show the employee’s name and ID, list out each day worked in chronological order, the number of hours worked that day and a total number of hours worked in the two week period.

The report shall prompt the user to re-enter an employee ID of it does not exist in the employee file.

private static void displayReports() {
System.out.println("Report");
Scanner sc = new Scanner(System.in);
String action = " ";
while (!action.equalsIgnoreCase("d"))

[Code] ....