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sankarnagarapusankarnagarapu
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‎src/AppGUI.java‎

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import javax.swing.*;
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import java.awt.event.*;
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import java.sql.*;
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public class AppGUI extends JFrame implements ActionListener {
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private final JLabel studentIdLabel, firstNameLabel, lastNameLabel, majorLabel, phoneLabel, gpaLabel, dobLabel;
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private final JTextField studentIdField, firstNameField, lastNameField, majorField, phoneField, gpaField, dobField;
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private final JButton addButton, displayButton, sortButton, searchButton, modifyButton;
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private Statement stmt;
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public AppGUI() {
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JFrame frame = new JFrame("Student Database");
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JPanel panel = new JPanel();
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// Initialize labels
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studentIdLabel = new JLabel("Student ID:");
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firstNameLabel = new JLabel("First Name:");
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lastNameLabel = new JLabel("Last Name:");
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majorLabel = new JLabel("Major:");
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phoneLabel = new JLabel("Phone:");
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gpaLabel = new JLabel("GPA:");
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dobLabel = new JLabel("Date of Birth (yyyy-mm-dd):");
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// Initialize text fields
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studentIdField = new JTextField(10);
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firstNameField = new JTextField(10);
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lastNameField = new JTextField(10);
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majorField = new JTextField(10);
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phoneField = new JTextField(10);
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gpaField = new JTextField(10);
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dobField = new JTextField(10);
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// Initialize buttons
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addButton = new JButton("Add");
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displayButton = new JButton("Display");
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sortButton = new JButton("Sort");
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searchButton = new JButton("Search");
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modifyButton = new JButton("Modify");
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// Add action listeners to buttons
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addButton.addActionListener(this);
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displayButton.addActionListener(this);
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sortButton.addActionListener(this);
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searchButton.addActionListener(this);
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modifyButton.addActionListener(this);
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// Add components to panel
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panel.add(studentIdLabel);
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panel.add(studentIdField);
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panel.add(firstNameLabel);
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panel.add(firstNameField);
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panel.add(lastNameLabel);
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panel.add(lastNameField);
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panel.add(majorLabel);
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panel.add(majorField);
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panel.add(phoneLabel);
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panel.add(phoneField);
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panel.add(gpaLabel);
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panel.add(gpaField);
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panel.add(dobLabel);
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panel.add(dobField);
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panel.add(addButton);
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panel.add(displayButton);
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panel.add(sortButton);
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panel.add(searchButton);
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panel.add(modifyButton);
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// Add panel to frame
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frame.add(panel);
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frame.pack();
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frame.setVisible(true);
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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}
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@Override
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public void actionPerformed(ActionEvent e) {
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dbConnect db = new dbConnect();
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Connection conn;
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try {
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conn = db.getConnection();
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} catch (SQLException | ClassNotFoundException ex) {
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throw new RuntimeException(ex);
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}
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try {
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stmt = conn.createStatement();
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} catch (SQLException e1) {
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e1.printStackTrace();
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}
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Table tb = new Table();
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if (e.getSource() == addButton) {
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// Insert new student into database
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String sql = "INSERT INTO sdata VALUES('" + studentIdField.getText() + "', '"
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+ firstNameField.getText() + "', '" + lastNameField.getText() + "', '" + majorField.getText()
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+ "', '" + phoneField.getText() + "', '" + gpaField.getText() + "', '" + dobField.getText() + "')";
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try {
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stmt.executeUpdate(sql);
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JOptionPane.showMessageDialog(null, "Student added successfully.");
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} catch (SQLException ex) {
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ex.printStackTrace();
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}
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} else if (e.getSource() == displayButton) {
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// Display all sdata in database
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String sql = "SELECT * FROM sdata";
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try {
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ResultSet rs = stmt.executeQuery(sql);
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// Create table to display student data
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JTable table = new JTable(tb.buildTableModel(rs));
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JOptionPane.showMessageDialog(null, new JScrollPane(table));
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} catch (SQLException ex) {
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ex.printStackTrace();
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}
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} else if (e.getSource() == sortButton) {
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// Sort sdata by selected column
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String[] options = {"First Name", "Last Name", "Major"};
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int choice = JOptionPane.showOptionDialog(null, "Sort by:", "Sort", JOptionPane.DEFAULT_OPTION,
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JOptionPane.PLAIN_MESSAGE, null, options, options[0]);
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String sql = "";
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switch (choice) {
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case 0 -> sql = "SELECT * FROM sdata ORDER BY first_name";
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case 1 -> sql = "SELECT * FROM sdata ORDER BY last_name";
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case 2 -> sql = "SELECT * FROM sdata ORDER BY major";
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default -> {
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}
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}
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try {
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ResultSet rs = stmt.executeQuery(sql);
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// Create table to display student data
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JTable table = new JTable(tb.buildTableModel(rs));
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JOptionPane.showMessageDialog(null, new JScrollPane(table));
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} catch (SQLException ex) {
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ex.printStackTrace();
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}
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} else if (e.getSource() == searchButton) {
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// Search for student by selected column
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String[] options = {"Student ID", "Last Name", "Major"};
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int choice = JOptionPane.showOptionDialog(null, "Search by:", "Search", JOptionPane.DEFAULT_OPTION,
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JOptionPane.PLAIN_MESSAGE, null, options, options[0]);
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String column = "";
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switch (choice) {
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case 0 -> column = "student_id";
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case 1 -> column = "last_name";
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case 2 -> column = "major";
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default -> {
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}
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}
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String searchTerm = JOptionPane.showInputDialog("Enter search term:");
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String sql = "SELECT * FROM sdata WHERE " + column + " LIKE '%" + searchTerm + "%'";
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try {
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ResultSet rs = stmt.executeQuery(sql);
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// Create table to display student data
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JTable table = new JTable(tb.buildTableModel(rs));
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JOptionPane.showMessageDialog(null, new JScrollPane(table));
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} catch (SQLException ex) {
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ex.printStackTrace();
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}
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} else if (e.getSource() == modifyButton) {
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// Modify selected student's data
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String studentId = JOptionPane.showInputDialog("Enter student ID:");
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String sql = "SELECT * FROM sdata WHERE student_id = '" + studentId + "'";
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try {
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ResultSet rs = stmt.executeQuery(sql);
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if (rs.next()) {
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String[] options = {"First Name", "Last Name", "Major", "Phone", "GPA", "Date of Birth"};
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int choice = JOptionPane.showOptionDialog(null, "Select field to modify:", "Modify",
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JOptionPane.DEFAULT_OPTION, JOptionPane.PLAIN_MESSAGE, null, options, options[0]);
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String column = "";
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switch (choice) {
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case 0 -> column = "first_name";
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case 1 -> column = "last_name";
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case 2 -> column = "major";
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case 3 -> column = "phone";
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case 4 -> column = "gpa";
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case 5 -> column = "date_of_birth";
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default -> {
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}
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}
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String newValue = JOptionPane.showInputDialog("Enter new value:");
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sql = "UPDATE sdata SET " + column + " = '" + newValue + "' WHERE student_id = '" + studentId + "'";
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stmt.executeUpdate(sql);
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JOptionPane.showMessageDialog(null, "Student data updated successfully.");
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} else {
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JOptionPane.showMessageDialog(null, "Student not found.");
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}
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} catch (SQLException ex) {
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ex.printStackTrace();
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}
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}
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}
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}

‎src/Main.java‎

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import javax.swing.*;
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public class Main {
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public static void main(String[] args) {
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AppGUI window = new AppGUI();
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window.pack();
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window.setVisible(true);
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window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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}
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}

‎src/Table.java‎

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import java.sql.*;
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import java.util.Vector;
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import javax.swing.table.DefaultTableModel;
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public class Table {
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DefaultTableModel buildTableModel(ResultSet rs) throws SQLException {
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ResultSetMetaData metaData = rs.getMetaData();
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// Get column names
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int columnCount = metaData.getColumnCount();
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Vector<String> columnNames = new Vector<String>();
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for (int i = 1; i <= columnCount; i++) {
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columnNames.add(metaData.getColumnName(i));
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}
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// Get row data
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Vector<Vector<Object>> rowData = new Vector<Vector<Object>>();
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while (rs.next()) {
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Vector<Object> row = new Vector<Object>();
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for (int i = 1; i <= columnCount; i++) {
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row.add(rs.getObject(i));
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}
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rowData.add(row);
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}
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return new DefaultTableModel(rowData, columnNames);
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}
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}

‎src/dbConnect.java‎

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import java.sql.*;
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public class dbConnect {
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private static Connection mycon=null;
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public Connection getConnection() throws ClassNotFoundException, SQLException {
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String db="studata", user = "root", pass = "1236";
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String url = "jdbc:mysql://localhost:3306/"+db;
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Class.forName("com.mysql.cj.jdbc.Driver");
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Connection conn = DriverManager.getConnection(url,user,pass);
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return conn;
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}
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}

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