how to use prepareStatement

1. Establish a connection to the database using DriverManager.getConnection() method.
2. Create a PreparedStatement object by calling the prepareStatement() method of the Connection object.
Example:
PreparedStatement stmt = conn.prepareStatement("INSERT INTO students (name, age) VALUES (?, ?)");

3. Set the parameter values using the appropriate setter methods.
Example:
stmt.setString(1, "John");
stmt.setInt(2, 20);

4. Execute the SQL statement using the executeUpdate() or executeQuery() method of the PreparedStatement object.
Example:
int rows = stmt.executeUpdate();

5. Close the PreparedStatement object and the Connection object using the close() method.
Example:
stmt.close();
conn.close();