Thread: Someone who can help me with my PAYROLL PROGRAM

Greetings ,

I have a problem with my payroll program .my problem is, how can I add error messages in my program.For example , if the user commit error 3 times quit the program after the 3rd message ,,another example,i need to ask a user to input his/her name in STRING only , if he/she input a number the program will ask to input again , another problem, user will input for no. of hours work should be numeric , if the input is character show the error message, then ask again to enter the no. of hours. In every error that the user might be committed give her/ her with appropriate message .

here's my code .. this program is payroll for monthly salary .

import java.text.DecimalFormat;
import java.util.Scanner;
 
public class EmployeePayroll {
 
 
    public static void main(String[] args) {
        Scanner dataIn = new Scanner(System.in);
 
        String firstName;
        String middleName;
        String lastName;
        int trials = 0;
        int choice = 0;
        String again;
        int hours = 0;
        int overtime = 0;
        int undertime = 0;
 
 
        DecimalFormat twoDigits = new DecimalFormat("P0.00");
 
        EmployeeName epName = new EmployeeName();
        EmployeeManager epM = new EmployeeManager();
        EmployeeSupervisor epS = new EmployeeSupervisor();
        EmployeeClerk epC = new EmployeeClerk();
 
        System.out.println("                EMPLOYEES PAYROLL FOR MONTHLY SALARY");
        System.out.println();
        System.out.println("                        Maximum of 3 ERRORS");
        System.out.println("Note: If you've reach the maximum ERRORS the program will automatically exit.");
        System.out.println();
        System.out.print("Employees First Name: ");
        firstName = dataIn.nextLine();  //input first name
        System.out.print("Employees Middle Name: ");
        middleName = dataIn.nextLine(); //input middle name
        System.out.print("Employees Last Name: ");
        lastName = dataIn.nextLine();   //input last name
 
        System.out.println("            [1]Manager    [2]Supervisor   [3]Clerk    [4]Exit");
        System.out.println("            -------------------------------------------------");
 
        System.out.print("                          What is your choice? : ");
        choice = dataIn.nextInt();      //input choice
 
 
        if (choice == 4) {              //if choice is 4 , exit the program
            System.out.println("              Thank You for using the Payroll Program ");
            System.exit(0);
        }
 
        System.out.print("Number of Hours Work: ");
        hours = dataIn.nextInt();       //input hours
 
 
        if (hours > 176) {
            int OT = (int) (hours - 176);
            System.out.println("            Your number of hours work is " + hours );
            System.out.println("    To get the overtime, substract the number of hours to 176" ); 
            System.out.print("Enter the Overtime Hours: ");
            overtime = dataIn.nextInt();
            while (overtime != OT) {
                System.out.println("Invalid Input!!");
                System.out.print("Enter Again The Overtime Hours: ");
                overtime = dataIn.nextInt();
                System.out.println();
            }
        }
        if (hours < 176) {
            int UT = (int) (176 - hours);
            System.out.println("            Your number of hours work is " + hours );
            System.out.println("    To get the overtime, substract 176 to the number of hours" );
            System.out.print("Enter the Undertime Hours: ");
            undertime = dataIn.nextInt();
            while (undertime != UT) {
                System.out.println("Invalid Input!!");
                System.out.print("Enter Again The Undertime Hours: ");
                undertime = dataIn.nextInt();
                System.out.println();
            }
        }
 
        if (choice == 1) {
            System.out.println();
            epName.setName(firstName, middleName, lastName);
            epM.setHours(hours);
            epM.setOt(overtime);
            epM.setUt(undertime);
            System.out.println("        -PAYROLL FOR MANAGER-");
            System.out.println();
            System.out.println("Name:   " + epName.getName());
 
            // for SSS
            if(hours > 176){
                 System.out.println("SSS:................." + twoDigits.format(epM.getSSSOM()));
            }
            else if (hours <176){
                System.out.println("SSS:................." + twoDigits.format(epM.getSSSUM()));
            }
            else{
                System.out.println("SSS:................." + twoDigits.format(epM.getSSSTM()));
            }
            //for PAGIBIG
            if(hours > 176){
                System.out.println("PAGIBIG:............." + twoDigits.format(epM.getPagibigOM()));
            }
            else if (hours <176){
                System.out.println("PAGIBIG:............." + twoDigits.format(epM.getPagibigUM()));
            }
            else{
                System.out.println("PAGIBIG:............." + twoDigits.format(epM.getPagibigTM()));
            }
 
            //for PHILHEALTH
            if(hours > 176){
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epM.getPhilhealthOM()));
            }
            else if (hours <176){
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epM.getPhilhealthUM()));
            }
            else{
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epM.getPhilhealthTM()));
            }
 
            //for TAX
            if(hours > 176){
                System.out.println("Tax:................." + twoDigits.format(epM.getTaxOM()));
            }
            else if (hours <176){
                System.out.println("Tax:................." + twoDigits.format(epM.getTaxUM()));
            }
            else{
                System.out.println("Tax:................." + twoDigits.format(epM.getTaxTM()));
            }
 
            //DEDUCTION
            System.out.println("Total Deduction:....." + twoDigits.format(epM.getDeductM()));
            System.out.println("Gross Income:........" + twoDigits.format(epM.getGrossM()));
            if (hours > 176) {
                System.out.println("Total Overtime Pay:.." + twoDigits.format(epM.getTotalOM()));
            } else {
                System.out.println("Total Overtime Pay:..P0.00");
            }
            if (hours < 176) {
                System.out.println("Total Undertime Pay:.." + twoDigits.format(epM.getTotalUM()));
            } else {
                System.out.println("Total Undertime Pay:.P0.00");
            }
            System.out.println("NET INCOME:.........." + twoDigits.format(epM.getNetM()));
        }
 
        if (choice == 2) {
            System.out.println();
            epName.setName(firstName, middleName, lastName);
            epS.setHours(hours);
            epS.setOt(overtime);
            epS.setUt(undertime);
            System.out.println("        -PAYROLL FOR SUPERVISOR-");
            System.out.println();
            System.out.println("Name:   " + epName.getName());
            // for SSS
            if(hours > 176){
                 System.out.println("SSS:................." + twoDigits.format(epS.getSSSOS()));
            }
            else if (hours <176){
                System.out.println("SSS:................." + twoDigits.format(epS.getSSSUS()));
            }
            else{
                System.out.println("SSS:................." + twoDigits.format(epS.getSSSTS()));
            }
            //for PAGIBIG
            if(hours > 176){
                System.out.println("PAGIBIG:............." + twoDigits.format(epS.getPagibigOS()));
            }
            else if (hours <176){
                System.out.println("PAGIBIG:............." + twoDigits.format(epS.getPagibigUS()));
            }
            else{
                System.out.println("PAGIBIG:............." + twoDigits.format(epS.getPagibigTS()));
            }
 
            //for PHILHEALTH
            if(hours > 176){
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epS.getPhilhealthOS()));
            }
            else if (hours <176){
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epS.getPhilhealthUS()));
            }
            else{
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epS.getPhilhealthTS()));
            }
 
            //for TAX
            if(hours > 176){
                System.out.println("Tax:................." + twoDigits.format(epS.getTaxOS()));
            }
            else if (hours <176){
                System.out.println("Tax:................." + twoDigits.format(epS.getTaxUS()));
            }
            else{
                System.out.println("Tax:................." + twoDigits.format(epS.getTaxTS()));
            }
 
            //DEDUCTION
            System.out.println("Total Deduction:....." + twoDigits.format(epS.getDeductS()));
            System.out.println("Gross Income:........" + twoDigits.format(epS.getGrossS()));
            if (hours > 176) {
                System.out.println("Total Overtime Pay:.." + twoDigits.format(epS.getTotalOS()));
            } else {
                System.out.println("Total Overtime Pay:..P0.00");
            }
            if (hours < 176) {
                System.out.println("Total Undertime Pay:.." + twoDigits.format(epS.getTotalUS()));
            } else {
                System.out.println("Total Undertime Pay:.P0.00");
            }
            System.out.println("NET INCOME:.........." + twoDigits.format(epS.getNetS()));
        }
 
        if (choice == 3) {
            System.out.println();
            epName.setName(firstName, middleName, lastName);
            epC.setHours(hours);
            epC.setOt(overtime);
            epC.setUt(undertime);
            System.out.println("        -PAYROLL FOR CLERK-");
            System.out.println();
            System.out.println("Name:   " + epName.getName());
            // for SSS
            if(hours > 176){
                 System.out.println("SSS:................." + twoDigits.format(epC.getSSSOC()));
            }
            else if (hours <176){
                System.out.println("SSS:................." + twoDigits.format(epC.getSSSUC()));
            }
            else{
                System.out.println("SSS:................." + twoDigits.format(epC.getSSSTC()));
            }
            //for PAGIBIG
            if(hours > 176){
                System.out.println("PAGIBIG:............." + twoDigits.format(epC.getPagibigOC()));
            }
            else if (hours <176){
                System.out.println("PAGIBIG:............." + twoDigits.format(epC.getPagibigUC()));
            }
            else{
                System.out.println("PAGIBIG:............." + twoDigits.format(epC.getPagibigTC()));
            }
 
            //for PHILHEALTH
            if(hours > 176){
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epC.getPhilhealthOC()));
            }
            else if (hours <176){
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epC.getPhilhealthUC()));
            }
            else{
                System.out.println("PHILHEALTH:.........." + twoDigits.format(epC.getPhilhealthTC()));
            }
 
            //for TAX
            if(hours > 176){
                System.out.println("Tax:................." + twoDigits.format(epC.getTaxOC()));
            }
            else if (hours <176){
                System.out.println("Tax:................." + twoDigits.format(epC.getTaxUC()));
            }
            else{
                System.out.println("Tax:................." + twoDigits.format(epC.getTaxTC()));
            }
 
            //DEDUCTION
            System.out.println("Total Deduction:....." + twoDigits.format(epC.getDeductC()));
            System.out.println("Gross Income:........" + twoDigits.format(epC.getGrossC()));
            if (hours > 176) {
                System.out.println("Total Overtime Pay:.." + twoDigits.format(epC.getTotalOC()));
            } else {
                System.out.println("Total Overtime Pay:..P0.00");
            }
            if (hours < 176) {
                System.out.println("Total Undertime Pay:.." + twoDigits.format(epC.getTotalUC()));
            } else {
                System.out.println("Total Undertime Pay:.P0.00");
            }
            System.out.println("NET INCOME:.........." + twoDigits.format(epC.getNetC()));
        }
 
    }
}

UP

Start with an error counter = 0, say numberOfErrors = 0, and check each user entry. If the user's entry is an error, the increment the error counter. Then check if the error counter > 3 and if so, let the user know they've errored out and exit.

This approach requires the use of methods which you don't seem too familiar with. If you were, you wouldn't be repeating the same code over and over and over and over and . . . over again in what you posted.

As for only accepting String inputs, since all alphanumeric inputs can be String objects, I assume you mean only allowing alpha characters. You can build your own character checker, you could use a regular expression, and there are probably a dozen other possible approaches.