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Main.java
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Main.java
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/*
* 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 onlineattendancesystem;
import java.util.*;
import java.io.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.*;
import java.lang.Exception;
/**
*
* @author Soumen
*/
class invalidAttdncePercent extends Exception{
String message;
invalidAttdncePercent(String message){
this.message = message;
}
public String toString(){
return message;
}
}
public class Main extends javax.swing.JFrame {
public static void copy(String a, String b){
try{
String temp = "";
BufferedReader br = new BufferedReader(new FileReader(a));
BufferedWriter bw = new BufferedWriter(new FileWriter(b));
while((temp = br.readLine()) != null){
bw.write(temp);
bw.newLine();
bw.flush();
}
}catch(IOException e){
e.printStackTrace();
}
}
/**
* Creates new form Table
*/
public Main() {
initComponents();
jButton2.enable(false);
}
/**
* 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">//GEN-BEGIN:initComponents
private void initComponents() {
op1 = new javax.swing.JOptionPane();
jPanel1 = new javax.swing.JPanel();
jButton2 = new javax.swing.JButton();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jScrollPane1 = new javax.swing.JScrollPane();
jList1 = new javax.swing.JList<>();
jLabel1 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jTextField2 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jScrollPane4 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jLabel3 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Online Students' Attendance System\n");
jButton2.setFont(new java.awt.Font("Arial", 2, 12)); // NOI18N
jButton2.setText("Calculate Attendance%");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane2.setViewportView(jTextArea1);
jList1.setModel(new javax.swing.AbstractListModel<String>() {
String[] strings = { "19Z201 AKASH", "19Z202 ANITA", "19Z203 ANUHARSHINI", "19Z204 ASHWIN", "19Z205 BALA", "19Z206 CHARANYA", "19Z207 CHIRAG", "19Z208 DARWIN", "19Z209 DEEPIKA", "19Z210 DEEPTI", "19Z211 DIVYA", "19Z212 SNEHA", "19Z213 RAJEEV", "19Z214 GOWTHAM", "19Z215 GUNAAL", "19Z216 HARINI", "19Z217 HEMA", "19Z218 JOHANNA", "19Z219 INDRA", "19Z220 JASWANTH", "19Z221 NARESH", "19Z222 KANISKA", "19Z223 KOUSHIKBALAJI", "19Z224 LOHITH", "19Z225 KEERTHNA", "19Z226 MANOJKUMAR", "19Z227 MONIRHITHIKKA", "19Z228 NANDHAKISHORE", "19Z229 NAVANEETH", "19Z230 PPREETHIKA", "19Z231 PAVITHRAL", "19Z232 PRANAV", "19Z233 PRANITHA", "19Z234 RAHULRAJ", "19Z235 RAKESH", "19Z236 RASWANTHE", "19Z237 BALASUBRAMANIAN", "19Z238 SAIRAM", "19Z239 SAMSITHA", "19Z240 SAMYUKTHA", "19Z241 SANJAIM", "19Z242 SANJAI", "19Z243 SARAYU", "19Z244 SIVASUBRAMANIAM", "19Z245 SOUMEN", "19Z246 SRIRAJA", "19Z247 SRIVATHSSAN", "19Z248 SUBASHINI", "19Z249 SUDHARSAN", "19Z250 SURIYA", "19Z251 SWETHA_D", "19Z252 SWETHA_G", "19Z253 KOUSIK_NIBITH", "19Z254 THARUN", "19Z255 VARSHITHAS", "19Z256 VARUN", "19Z257 VENIGALLA", "19Z258 VIGNESHM", "19Z259 VIKNESHWAR", "19Z260 VISHWAKJITH", "19Z261 VIVEKANANDHAN", "19Z262 YOGESH", "19Z263 MANOJ", "19Z264 MATHANA", "19Z265 SWATHIPRIYA", " " };
public int getSize() { return strings.length; }
public String getElementAt(int i) { return strings[i]; }
});
jScrollPane1.setViewportView(jList1);
jLabel1.setFont(new java.awt.Font("Calibri", 1, 12)); // NOI18N
jLabel1.setText("Select the Stutents present in the Class");
jButton1.setFont(new java.awt.Font("Calibri", 1, 14)); // NOI18N
jButton1.setText("Submit Attendance");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel2.setText("Enter the Total No. of Working Hours ->");
jLabel4.setFont(new java.awt.Font("Arial", 3, 11)); // NOI18N
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"ROLL/ID", "NAME", "PRESENT HOURS", "ATTENDANCE%"
}
) {
boolean[] canEdit = new boolean [] {
false, false, false, false
};
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jScrollPane4.setViewportView(jTable1);
jLabel3.setFont(new java.awt.Font("Times New Roman", 0, 14)); // NOI18N
jLabel3.setText("Overall Attendance");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(25, 25, 25)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 226, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 186, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(17, 17, 17)
.addComponent(jButton1)))
.addGap(28, 28, 28)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 212, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(33, 33, 33)
.addComponent(jScrollPane4, javax.swing.GroupLayout.DEFAULT_SIZE, 472, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(140, 140, 140)
.addComponent(jButton2)
.addGap(0, 0, Short.MAX_VALUE))))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 237, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(177, 177, 177)
.addComponent(jLabel3)
.addGap(0, 0, Short.MAX_VALUE))))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 226, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(44, 44, 44)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 21, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(32, 32, 32)
.addComponent(jButton1))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(32, 32, 32)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 21, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 238, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, 208, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jButton2)))))
.addGap(58, 58, 58)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 12, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
//List<String> allStuds = new ArrayList<>(65);
List<String> absentees = new ArrayList<>(65);
for(int i = 0; i<jList1.getModel().getSize(); i++){
//allStuds.add(jList1.getModel().getElementAt(i));
absentees.add(jList1.getModel().getElementAt(i));
}
//System.out.println(allStuds);
List<String> presentStuds = new ArrayList<>(65);
presentStuds = jList1.getSelectedValuesList();
absentees.removeAll(presentStuds);
Iterator<String> itr = absentees.iterator();
jTextArea1.setText("");
Date today = new Date();
StringBuffer str = new StringBuffer("");
for(int i = 0; i<28; i++){
str.append(today.toString().charAt(i));
if(i == 9)
i = 22;
}
jLabel4.setText("Absentees on "+str+"\n");
while(itr.hasNext()){
String stud = itr.next();
jTextArea1.append(stud+"\n");
}
try{
File f1 = new File("C:\\Users\\SOUMEN\\Documents\\NetBeansProjects\\OnlineAttendanceSystem\\data1.txt");
Scanner sc = new Scanner(new BufferedReader(new FileReader("C:\\Users\\SOUMEN\\Documents\\NetBeansProjects\\OnlineAttendanceSystem\\data.txt")));
sc.nextLine();
BufferedWriter wData = new BufferedWriter(new FileWriter(f1));
wData.write("ROLL\tNAME\tHOURS OF PRESENCE\r\n");
while(sc.hasNext()){
String id = sc.next();
String name = sc.next();
int workHrs = sc.nextInt();
if(presentStuds.contains(id+" "+name)){
workHrs++;
wData.append(id+" "+name+"\t"+ workHrs+"\r\n");
}else{
wData.append(id+" "+name+"\t"+ workHrs+"\r\n");
}
//System.out.println(str1.charAt(str1.length()-1));
}
wData.close();
sc.close();
Main.copy("data1.txt", "data.txt");
if(f1.exists()){
//System.out.println(Files.deleteIfExists(f1.toPath()));
//System.out.println(f1.exists()+" "+f1.delete());
}
}catch(IOException e){
System.out.println("An Error Occured");
}
}//GEN-LAST:event_jButton1ActionPerformed
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
// Clear the existing table
int rows = model.getRowCount();
if (rows > 0) {
for (int i = 0; i < rows; i++) {
model.removeRow(0);
}
}
try{
Scanner sc = new Scanner(new BufferedReader(new FileReader("C:\\Users\\SOUMEN\\Documents\\NetBeansProjects\\OnlineAttendanceSystem\\data.txt")));
sc.nextLine();
while(sc.hasNext()){
String id = sc.next();
String name = sc.next();
int workHrs = sc.nextInt();
try{
int totalHrs =Integer.parseInt(jTextField2.getText());
if(totalHrs < workHrs){
throw new invalidAttdncePercent("Invalid Input!!! Pls Enter Again...");
}
double percent = ((double)workHrs/totalHrs)*100;
percent = (double)Math.round(percent*100)/100;
if(percent < 75.00){
model.addRow(new Object[]{id, name, workHrs, percent+" LOW!"});
}else{
model.addRow(new Object[]{id, name,workHrs, percent});
}
}catch(NumberFormatException e){
op1.showMessageDialog(null,"Input is not a Int Value!!!");
break;
}catch(invalidAttdncePercent e){
rows = model.getRowCount();
if (rows > 0) {
for (int i = 0; i < rows; i++) {
model.removeRow(0);
}
}
op1.showMessageDialog(jTextField2,e);
break;
}
}
sc.close();
}catch(IOException e){
op1.showMessageDialog(jPanel1,"An Error Occured");
}
}//GEN-LAST:event_jButton2ActionPerformed
/**
* @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(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Main().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JList<String> jList1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JScrollPane jScrollPane4;
private javax.swing.JTable jTable1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField2;
private javax.swing.JOptionPane op1;
// End of variables declaration//GEN-END:variables
}