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String sql = "INSERT INTO Users (username, password, fullname, email) VALUES (?, ?, ?, ?)";
PreparedStatement statement = conn.prepareStatement(sql);
statement.setString(1, "bill");
statement.setString(2, "secretpass");
statement.setString(3, "Bill Gates");
statement.setString(4, "bill.gates@microsoft.com");
int rowsInserted = statement.executeUpdate();
if (rowsInserted > 0) {
System.out.println("A new user was inserted successfully!");
}