import java.sql.*;
import java.io.ByteArrayInputStream;

public class PrintQuery {

	public static void main(String args[]) throws Exception {

		Class.forName("org.postgresql.Driver");

		Connection conn = DriverManager.getConnection("jdbc:postgresql://localhost:5432/jurka", "jurka", "");
		PreparedStatement ps = conn.prepareStatement("SELECT ?");

		ps.setString(1, "NULL");
		System.out.println(ps.toString());

		ps.setString(1, "a\\b");
		System.out.println(ps.toString());

		byte data[] = new String("data").getBytes("US-ASCII");
		ByteArrayInputStream bais = new ByteArrayInputStream(data);
		ps.setBinaryStream(1, bais, data.length);
		System.out.println(ps.toString());
		System.out.println(ps.toString());

		conn.close();
	}
}