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import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class JDBCPreparedStatementSelectExample {
private static final String DB_DRIVER = "org.postgresql.Driver";
private static final String DB_CONNECTION = "jdbc:postgresql://localhost:5432/postgres";
private static final String DB_USER = "postgres";
private static final String DB_PASSWORD = "Eltinto66";
public static void main(String[] argv) {
try {
selectRecordsFromTable();
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
private static void selectRecordsFromTable() throws SQLException {
Connection dbConnection = null;
PreparedStatement preparedStatement = null;
JFrame mainFrame = new JFrame("JDBC PreparedStatement example");
String selectSQL = "SELECT bpart_code, bpart_description FROM bp_articles WHERE bpart_code = ?";
try {
dbConnection = getDBConnection();
preparedStatement = dbConnection.prepareStatement(selectSQL);
preparedStatement.setString(1, "C002");
// execute select SQL statement
ResultSet rs = preparedStatement.executeQuery();
while (rs.next()) {
String code = rs.getString("bpart_code");
String description = rs.getString("bpart_description");
JOptionPane.showMessageDialog(mainFrame, " code article : "+code + " / description : "+description);
}
} catch (SQLException e) {
System.out.println(e.getMessage());
} finally {
if (preparedStatement != null) {
preparedStatement.close();
}
if (dbConnection != null) {
dbConnection.close();
}
}
}
private static Connection getDBConnection() {
Connection dbConnection = null;
try {
Class.forName(DB_DRIVER);
} catch (ClassNotFoundException e) {
System.out.println(e.getMessage());
}
try {
dbConnection = DriverManager.getConnection(
DB_CONNECTION, DB_USER,DB_PASSWORD);
return dbConnection;
} catch (SQLException e) {
System.out.println(e.getMessage());
}
return dbConnection;
}
}