Class.forName( "org.postgresql.Driver" );
Connection cn = DriverManager.getConnection( "jdbc:postgresql://10.0.0.10:5432/teste", "postgres", "teste" );
cn.setAutoCommit( true );
Statement st = cn.createStatement();
ResultSet rs = st.executeQuery( "SELECT * from funcionarios order by funcionarios" );
BufferedWriter bw = new BufferedWriter(new FileWriter("arquivo.txt", true));
while( rs.next() )
{
String cpf = rs.getString( "cpfatendente" );
bw.write(cpf + "\n");
out.println( "CPF = " + cpf );
}
bw.close();
rs.close();
st.close();
cn.close();Tente assim...