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Add files via upload #1

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3465469
Add files via upload
shinobiwanshin Jun 12, 2023
cba062b
Add files via upload
shinobiwanshin Jun 12, 2023
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18 changes: 7 additions & 11 deletions AddClassGUI.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ private void initialize() {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);

JLabel classLabel = new JLabel("Class:");
JLabel classLabel = new JLabel("Number:");
classLabel.setBounds(50, 50, 80, 25);
frame.getContentPane().add(classLabel);

Expand All @@ -55,12 +55,7 @@ private void initialize() {
frame.getContentPane().add(slotsComboBox);

// Add the slots to the combo box
String[] slots = {
"A1", "A2", "A3", "A4", "B1", "B2", "B3", "B4",
"C1", "C2", "C3", "C4", "D1", "D2", "D3", "D4",
"E1", "E2", "E3", "E4", "F1", "F2", "F3", "F4",
"G1", "G2", "G3", "G4"
};
String[] slots = {"A1", "A2", "B1", "B2", "C1", "C2"};
slotsComboBox.setModel(new DefaultComboBoxModel<>(slots));

addButton = new JButton("Add");
Expand All @@ -78,7 +73,7 @@ public void actionPerformed(ActionEvent e) {
String slot = (String) slotsComboBox.getSelectedItem();

if (className.isEmpty() || slot.isEmpty()) {
statusLabel.setText("Please enter class and select a slot.");
statusLabel.setText("Please enter a number and select a slot.");
} else {
addClass(className, slot);
}
Expand All @@ -88,14 +83,15 @@ public void actionPerformed(ActionEvent e) {

private void addClass(String className, String slot) {
try (Connection conn = DriverManager.getConnection(JDBC_URL, USERNAME, PASSWORD)) {
String insertQuery = "INSERT INTO classes (class, slot) VALUES (?, ?)";
try (PreparedStatement stmt = conn.prepareStatement(insertQuery)) {
String insertQuery = "INSERT INTO classes (class, slot) VALUES (?, ?) ON DUPLICATE KEY UPDATE class = ?";
try (PreparedStatement stmt = conn.prepareStatement(insertQuery, Statement.RETURN_GENERATED_KEYS)) {
stmt.setString(1, className);
stmt.setString(2, slot);
stmt.setString(3, className);
int rowsAffected = stmt.executeUpdate();

if (rowsAffected > 0) {
statusLabel.setText("Class added successfully.");
statusLabel.setText("Class added successfully. Slot: " + slot + ", Number: " + className);
classField.setText("");
slotsComboBox.setSelectedIndex(0);
} else {
Expand Down
58 changes: 32 additions & 26 deletions ExamSeatingArrangementGUI.java
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ public class ExamSeatingArrangementGUI {
private JFrame frame;
private JTextField nameField;
private JTextField idField;
private JButton findSeatButton;
private JButton displayButton;
private JTextArea seatingTextArea;
private JLabel errorLabel;

Expand All @@ -33,7 +33,7 @@ public ExamSeatingArrangementGUI() {

private void initialize() {
frame = new JFrame();
frame.setTitle("Exam Seating Arrangement");
frame.setTitle("Exam Seating Display");
frame.setBounds(100, 100, 450, 400);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
Expand All @@ -56,9 +56,9 @@ private void initialize() {
frame.getContentPane().add(idField);
idField.setColumns(10);

findSeatButton = new JButton("Find My Seat");
findSeatButton.setBounds(140, 130, 120, 25);
frame.getContentPane().add(findSeatButton);
displayButton = new JButton("Display");
displayButton.setBounds(140, 130, 120, 25);
frame.getContentPane().add(displayButton);

seatingTextArea = new JTextArea();
seatingTextArea.setEditable(false);
Expand All @@ -70,7 +70,7 @@ private void initialize() {
errorLabel.setForeground(Color.RED);
frame.getContentPane().add(errorLabel);

findSeatButton.addActionListener(new ActionListener() {
displayButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String name = nameField.getText();
String id = idField.getText();
Expand All @@ -79,38 +79,44 @@ public void actionPerformed(ActionEvent e) {
errorLabel.setText("Please enter name and ID.");
seatingTextArea.setText("");
} else {
findSeat(name, id);
displaySeatInfo(name, id);
}
}
});
}

private void findSeat(String name, String id) {
private void displaySeatInfo(String name, String id) {
try (Connection conn = DriverManager.getConnection(JDBC_URL, USERNAME, PASSWORD)) {
String selectQuery = "SELECT seats FROM students WHERE name = ? AND unique_id = ?";
try (PreparedStatement stmt = conn.prepareStatement(selectQuery)) {
String query = "SELECT s.slot_number, c.class, s.seats " +
"FROM students s " +
"JOIN classes c ON s.slot_number = c.slot " +
"WHERE s.name = ? AND s.unique_id = ?";
try (PreparedStatement stmt = conn.prepareStatement(query)) {
stmt.setString(1, name);
stmt.setString(2, id);

ResultSet rs = stmt.executeQuery();
if (rs.next()) {
int seats = rs.getInt("seats");

seatingTextArea.setText("Name: " + name + "\n" +
"Unique ID: " + id + "\n" +
"Seat Number: " + seats);
errorLabel.setText("");
} else {
seatingTextArea.setText("");
errorLabel.setText("Invalid name or ID. Please try again.");

try (ResultSet rs = stmt.executeQuery()) {
if (rs.next()) {
String slot = rs.getString("slot_number");
String studentClass = rs.getString("class");
int seats = rs.getInt("seats");

String seatingInfo = "Name: " + name + "\n" +
"Unique ID: " + id + "\n" +
"Slot: " + slot + "\n" +
"Class: " + studentClass + "\n" +
"Seats: " + seats;

seatingTextArea.setText(seatingInfo);
errorLabel.setText("");
} else {
seatingTextArea.setText("");
errorLabel.setText("No seat found for the given name and ID.");
}
}
}
} catch (SQLException ex) {
ex.printStackTrace();
errorLabel.setText("Error connecting to the database.");
seatingTextArea.setText("");
}
}


}
17 changes: 14 additions & 3 deletions jdbc.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,6 @@ private static void createTable(Connection conn) throws SQLException {
}

private static void generateStudentData(Connection conn) throws SQLException {
String[] slots = {"A1", "A1", "A2", "A2", "A3", "A3", "A4", "A4", "A5", "A5", "A6", "A6"};
String[] names = {"John Doe", "Jane Smith", "Mike Johnson", "Emily Davis", "Robert Wilson", "Olivia Brown",
"David Taylor", "Sophia Miller", "Daniel Anderson", "Ava Garcia", "William Thomas", "Mia Martinez"};
String[] uniqueIds = {"001", "002", "003", "004", "005", "006", "007", "008", "009", "010", "011", "012"};
Expand All @@ -48,18 +47,30 @@ private static void generateStudentData(Connection conn) throws SQLException {

try (PreparedStatement stmt = conn.prepareStatement(insertQuery)) {
for (int i = 0; i < names.length; i++) {
String slot = getRandomSlot(conn);
stmt.setString(1, names[i]);
stmt.setString(2, uniqueIds[i]);
stmt.setString(3, exams[i]);
stmt.setString(4, slots[i]);
stmt.setString(4, slot);
stmt.executeUpdate();
}
System.out.println("Student data inserted successfully!");
}
}

private static String getRandomSlot(Connection conn) throws SQLException {
String selectQuery = "SELECT slot FROM classes ORDER BY RAND() LIMIT 1";
try (Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(selectQuery)) {
if (rs.next()) {
return rs.getString("slot");
}
}
throw new SQLException("Failed to retrieve a random slot from the classes table.");
}

private static void displaySeatingArrangement(Connection conn) throws SQLException {
String selectQuery = "SELECT name, unique_id, exam, slot_number FROM students ORDER BY slot_number, name";
String selectQuery = "SELECT s.name, s.unique_id, s.exam, s.slot_number FROM students s ORDER BY s.slot_number, s.name";
try (Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(selectQuery)) {
System.out.println("Seating Arrangement:");
Expand Down
152 changes: 152 additions & 0 deletions term_cum_assign.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,152 @@
import java.sql.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class term_cum_assign {
// JDBC connection details
private static final String JDBC_URL = "jdbc:mysql://localhost:3306/examdb";
private static final String USERNAME = "root";
private static final String PASSWORD = "Chintutyagi@12";

private JFrame frame;
private JButton assignSeatsButton;
private JButton clearDatabaseButton;
private JTextArea seatingTextArea;

public static void main(String[] args) {
EventQueue.invokeLater(() -> {
try {
term_cum_assign window = new term_cum_assign();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
});
}

public term_cum_assign() {
initialize();
}

private void initialize() {
frame = new JFrame();
frame.setTitle("Exam Seating Arrangement");
frame.setBounds(100, 100, 450, 350);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);

assignSeatsButton = new JButton("Assign Seats");
assignSeatsButton.setBounds(30, 20, 120, 25);
frame.getContentPane().add(assignSeatsButton);

clearDatabaseButton = new JButton("Clear Database");
clearDatabaseButton.setBounds(160, 20, 120, 25);
frame.getContentPane().add(clearDatabaseButton);

seatingTextArea = new JTextArea();
seatingTextArea.setEditable(false);
seatingTextArea.setBounds(20, 60, 390, 220);
frame.getContentPane().add(seatingTextArea);

assignSeatsButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
assignSeats();
}
});

clearDatabaseButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
clearDatabase();
}
});
}

private void assignSeats() {
try (Connection conn = DriverManager.getConnection(JDBC_URL, USERNAME, PASSWORD)) {
// Check if the 'seats' column exists in the table
DatabaseMetaData meta = conn.getMetaData();
ResultSet rs = meta.getColumns(null, null, "students", "seats");
boolean seatsColumnExists = rs.next();
rs.close();

// If the 'seats' column does not exist, add it to the table
if (!seatsColumnExists) {
String alterTableQuery = "ALTER TABLE students ADD COLUMN seats INT";
try (Statement stmt = conn.createStatement()) {
stmt.executeUpdate(alterTableQuery);
}
}

// Retrieve the student records
String selectQuery = "SELECT name, unique_id, exam FROM students";
try (Statement stmt = conn.createStatement();
ResultSet resultSet = stmt.executeQuery(selectQuery)) {
ArrayList<Integer> seatNumbers = new ArrayList<>();
for (int i = 1; i <= 30; i++) {
seatNumbers.add(i);
}
Collections.shuffle(seatNumbers);

String updateQuery = "UPDATE students SET seats = ? WHERE unique_id = ?";
try (PreparedStatement pstmt = conn.prepareStatement(updateQuery)) {
int index = 0;
while (resultSet.next()) {
String uniqueId = resultSet.getString("unique_id");
int seatNumber = seatNumbers.get(index);

pstmt.setInt(1, seatNumber);
pstmt.setString(2, uniqueId);
pstmt.executeUpdate();

index++;
}
}
}

// Retrieve the updated seating arrangement
String selectQueryWithSeats = "SELECT name, unique_id, exam, seats FROM students ORDER BY seats";
try (Statement stmt = conn.createStatement();
ResultSet resultSet = stmt.executeQuery(selectQueryWithSeats)) {
StringBuilder seatingArrangement = new StringBuilder();
seatingArrangement.append("Seating Arrangement:\n");
seatingArrangement.append("Name\t\t\t\tUnique ID\tExam\t\tSeat\n");
seatingArrangement.append("---------------------------------------------------\n");

while (resultSet.next()) {
String name = resultSet.getString("name");
String uniqueId = resultSet.getString("unique_id");
String exam = resultSet.getString("exam");
int seatNumber = resultSet.getInt("seats");

seatingArrangement.append(name);
seatingArrangement.append("\t\t");
seatingArrangement.append(uniqueId);
seatingArrangement.append("\t\t");
seatingArrangement.append(exam);
seatingArrangement.append("\t\t");
seatingArrangement.append(seatNumber);
seatingArrangement.append("\n");
}

seatingTextArea.setText(seatingArrangement.toString());
}
} catch (SQLException ex) {
ex.printStackTrace();
}
}

private void clearDatabase() {
try (Connection conn = DriverManager.getConnection(JDBC_URL, USERNAME, PASSWORD)) {
String clearQuery = "TRUNCATE TABLE students";
try (Statement stmt = conn.createStatement()) {
stmt.executeUpdate(clearQuery);
}

seatingTextArea.setText("Database cleared.");
} catch (SQLException ex) {
ex.printStackTrace();
}
}
}