Скачать или смотреть How to Connect Java with MySQL using JDBC PreparedStatement | Step by Step

Learn how to connect Java with MySQL using JDBC PreparedStatement in this step-by-step tutorial. 🚀
In this video, you’ll discover how to:
✔️ Establish a secure JDBC connection between Java and MySQL
✔️ Use PreparedStatement to insert, update, and query data
✔️ Prevent SQL Injection and improve database performance
✔️ Write clean, efficient, and professional Java code

This tutorial is perfect for beginners and intermediate Java developers who want to work with databases safely and efficiently in 2025 and beyond.

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CODE GOES HERE----------------------------------------------------------------------------------------
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try {
// TODO add your handling code here
final String query = "Select * from employee";
final String update_query = "Update employee set edesignation = ? where eno = ?";

Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/testdb","root","");

PreparedStatement stmt = conn.prepareStatement(update_query);
// stmt.setString(1, "teacher");
// stmt.setInt(2, 63);
// int rows = stmt.executeUpdate();
// JOptionPane.showMessageDialog(rootPane, "rows affected : "+rows);
//
ResultSet rs = stmt.executeQuery(query);
while(rs.next()){
String record = rs.getInt("eno")+ " "+rs.getString("ename")+" "+rs.getString("edesignation");
JOptionPane.showMessageDialog(rootPane, record);
}

} catch (SQLException ex) {
Logger.getLogger(JdbcForm.class.getName()).log(Level.SEVERE, null, ex);
}
}

#Java #MySQL #JDBC #PreparedStatement #SQLInjection #DatabaseTutorial #JavaProgramming