A payroll system that I wrote using Swing in Java programming language I hope you will find it useful.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details.  If you want to advertise on my website, kindly contact me also at my email address also. Thank you.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com

My mobile number here in the Philippines is 09173084360.

Program Listing

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.jakerpomperada.payroll;

import javax.swing.*;  
import java.text.DecimalFormat;
/**
 *
 * @author Jacob Samuel
 */
public class Payroll_System extends javax.swing.JFrame {

    /**
     * Creates new form Payroll_System
     */
    public Payroll_System() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        emp_name = new javax.swing.JTextField();
        department = new javax.swing.JTextField();
        id_number = new javax.swing.JTextField();
        gross_salary = new javax.swing.JTextField();
        days_work = new javax.swing.JTextField();
        jLabel6 = new javax.swing.JLabel();
        compute = new javax.swing.JButton();
        clear = new javax.swing.JButton();
        quit = new javax.swing.JButton();
        rate_per_day = new javax.swing.JTextField();
        about = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Payroll System Using Swing in Java");

        jLabel1.setFont(new java.awt.Font("Arial", 1, 12)); // NOI18N
        jLabel1.setText("Employee's Name");

        jLabel2.setFont(new java.awt.Font("Arial", 1, 12)); // NOI18N
        jLabel2.setText("Department");

        jLabel3.setFont(new java.awt.Font("Arial", 1, 12)); // NOI18N
        jLabel3.setText("Rate Per Day");

        jLabel4.setFont(new java.awt.Font("Arial", 1, 12)); // NOI18N
        jLabel4.setText("ID Number");

        jLabel5.setFont(new java.awt.Font("Arial", 1, 12)); // NOI18N
        jLabel5.setText("Number of Day's Worked");

        id_number.setToolTipText("");

        jLabel6.setFont(new java.awt.Font("Arial", 1, 12)); // NOI18N
        jLabel6.setText("Gross Salary");

        compute.setFont(new java.awt.Font("Arial", 1, 14)); // NOI18N
        compute.setText("Compute");
        compute.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                computeActionPerformed(evt);
            }
        });

        clear.setFont(new java.awt.Font("Arial", 1, 14)); // NOI18N
        clear.setText("Clear");
        clear.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                clearActionPerformed(evt);
            }
        });

        quit.setFont(new java.awt.Font("Arial", 1, 14)); // NOI18N
        quit.setText("Quit Program");
        quit.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                quitActionPerformed(evt);
            }
        });

        about.setFont(new java.awt.Font("Arial", 1, 14)); // NOI18N
        about.setText("About");
        about.setActionCommand("about");
        about.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                aboutActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel5)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(days_work, javax.swing.GroupLayout.PREFERRED_SIZE, 120, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jLabel1)
                                    .addComponent(jLabel2)
                                    .addComponent(jLabel4)
                                    .addComponent(jLabel3))
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createSequentialGroup()
                                        .addGap(52, 52, 52)
                                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                            .addComponent(id_number, javax.swing.GroupLayout.PREFERRED_SIZE, 120, javax.swing.GroupLayout.PREFERRED_SIZE)
                                            .addComponent(emp_name, javax.swing.GroupLayout.DEFAULT_SIZE, 233, Short.MAX_VALUE)
                                            .addComponent(department)))
                                    .addGroup(layout.createSequentialGroup()
                                        .addGap(50, 50, 50)
                                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                            .addComponent(gross_salary, javax.swing.GroupLayout.PREFERRED_SIZE, 120, javax.swing.GroupLayout.PREFERRED_SIZE)
                                            .addComponent(rate_per_day, javax.swing.GroupLayout.PREFERRED_SIZE, 120, javax.swing.GroupLayout.PREFERRED_SIZE)
                                            .addGroup(layout.createSequentialGroup()
                                                .addComponent(clear, javax.swing.GroupLayout.PREFERRED_SIZE, 91, javax.swing.GroupLayout.PREFERRED_SIZE)
                                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 44, Short.MAX_VALUE)
                                                .addComponent(about, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))))))
                            .addComponent(jLabel6)))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(18, 18, 18)
                        .addComponent(compute)))
                .addGap(27, 27, 27)
                .addComponent(quit)
                .addGap(33, 33, 33))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(21, 21, 21)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(emp_name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(department, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(id_number, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel4))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED, 21, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel5)
                    .addComponent(days_work, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(11, 11, 11)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(rate_per_day, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel6)
                    .addComponent(gross_salary, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(32, 32, 32)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(compute)
                    .addComponent(clear)
                    .addComponent(quit)
                    .addComponent(about))
                .addContainerGap(23, Short.MAX_VALUE))
        );

        jLabel1.getAccessibleContext().setAccessibleName("");
        days_work.getAccessibleContext().setAccessibleName("");
        jLabel6.getAccessibleContext().setAccessibleName("");

        pack();
    }// </editor-fold>                        

    private void computeActionPerformed(java.awt.event.ActionEvent evt) {                                        
        // TODO add your handling code here:
       compute.setToolTipText("Click here to compute the gross salary.");
       // TODO add your handling code here:
        DecimalFormat f = new DecimalFormat("##.00");
             if (evt.getSource().equals(compute)) {

           double no_of_days =  Double.parseDouble(days_work.getText());
        
           double rate_days =  Double.parseDouble(rate_per_day.getText());
           
           double gross_pay = (no_of_days * rate_days);
          
           gross_salary.setText(String.valueOf(" PHP " + f.format(gross_pay)));
           gross_salary.setEditable(false); 
           
    }                                       
    }
    private void clearActionPerformed(java.awt.event.ActionEvent evt) {                                      
        // TODO add your handling code here:
        clear.setToolTipText("Click here to clear the text box.");
        if (evt.getSource().equals(clear)) {
        emp_name.setText("");
        department.setText("");
        id_number.setText("");
        days_work.setText("");
        rate_per_day.setText("");
        gross_salary.setText("");
        emp_name.requestFocus();
        }
    }                                     

    private void quitActionPerformed(java.awt.event.ActionEvent evt) {                                     
      if (evt.getSource().equals(quit)) {
        
                     
    int confirmed = JOptionPane.showConfirmDialog(null, "Exit Program?","Quit Program",JOptionPane.YES_NO_OPTION);
    if(confirmed == JOptionPane.YES_OPTION)
    {
        dispose();
    }
} else {
            
     setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
       }        // TODO add your handling code here:
    }                                    

    private void aboutActionPerformed(java.awt.event.ActionEvent evt) {                                      
        // TODO add your handling code here:
        if (evt.getSource().equals(about)) {
        
                     
    int confirmed = JOptionPane.showConfirmDialog(null,"Created By Mr. Jake Rodriguez Pomperada,MAED-IT, MIT","About This Program",JOptionPane.OK_OPTION);
    if(confirmed == JOptionPane.OK_OPTION)
    {
        dispose();
    }
    }                                     
    }
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Payroll_System.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Payroll_System.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Payroll_System.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Payroll_System.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Payroll_System().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton about;
    private javax.swing.JButton clear;
    private javax.swing.JButton compute;
    private javax.swing.JTextField days_work;
    private javax.swing.JTextField department;
    private javax.swing.JTextField emp_name;
    private javax.swing.JTextField gross_salary;
    private javax.swing.JTextField id_number;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JButton quit;
    private javax.swing.JTextField rate_per_day;
    // End of variables declaration                   
}

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