Loop Infinite Java

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Loop Infinite Java

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#1 by (2 votes)
#2 by (1 votes)

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How do I get the Infinite Loop out of this class? Every time it is the last information from the database it continues sending email.

public class Dia06 {  

public static final long TEMPO = (14 * 1440);
protected static final String Class = null;

public static void main(String[] args) throws SQLException {  
    Connection conexao = new Conexao().getConnection();
    PreparedStatement stmt = conexao.prepareStatement(
            "SELECT P.duplic, "
                    + "       P.dtemissao, "
                    + "       P.dtvenc, "
                    + "       P.valor, "
                    + "       C.cliente, "
                    + "       P.obs2, "
                    + "       c.email, "
                    + "       P.codcli, "
                    + "       C.telent, "
                    + "       Nvl(P.valordesc, 0) VLDESC, "
                    + "       P.codusur, "
                    + "       P.prest, "
                    + "       P.codcob, "
                    + "       C.ieent, "
                    + "       C.bloqueio, "
                    + "       P.duplic "
                    + "       || '-' "
                    + "       || P.prest          AS TITULO, "
                    + "       P.numtransvenda, "
                    + "       P.codfilial "
                    + "FROM   pcprest P, "
                    + "       pcclient C, "
                    + "       pccob B, "
                    + "       pcfilial F "
                    + "WHERE  P.codcob = B.codcob "
                    + "       AND P.codcli = C.codcli "
                    + "       AND P.codfilial = F.codigo "
                    + "       AND  F.CODIGO = 3 "
                    + "       AND p.codcob NOT IN ( 'DEVP', 'DEVT', 'BNF', 'BNFT', "
                    + "                             'BNFR', 'BNTR', 'BNRP', 'CRED', 'DESD' ) "
                    + "       AND P.dtpag IS NULL "
                    + "       AND p.dtvenc = To_date(SYSDATE)-6");

    ResultSet rs = stmt.executeQuery();

    while (rs.next()){

        final String cliente = rs.getString("cliente");
        final String dtvenc = rs.getString("dtvenc");
        final String valor   = rs.getString("valor");
        //final String EMAIL   = rs.getString("EMAIL");
        //final String duplic   = rs.getString("duplic");

        Timer timer = null;  
        if (timer == null) {  
            timer = new Timer();  
            TimerTask tarefa = new TimerTask() {  
                @SuppressWarnings("deprecation")

                public void run() {   


                    //criar um update depois que enviar o email.
                    try {  

                        MultiPartEmail emai = new MultiPartEmail(); //classe utilizada para permitir anexos no email  
                        emai.setDebug(true);  
                        emai.setHostName("192.168.2.200"); //servidor SMTP. Aqui usamos um do Gmail  
                        emai.setSmtpPort(25);
                        emai.setAuthentication("[email protected]", "898999"); // login e senha da conta Gmail  
                        emai.setSSL(false); //Autentica��o de seguran�a SSL setada como True  
                        //emai.addTo(EMAIL);
                        emai.addTo("[email protected]"); //nome do email que vai receber o bkp do banco de dados. Pode ser o seu para teste  
                        emai.setFrom("[email protected]"); //endere�o de email do remetente  
                        emai.setSubject("Cobran�a de D�vida Ativa"); //assunto  
                        emai.setMsg("Prezado( a ) Senhor( a ): " + cliente

                                +"Prezados,\n\n"

                                +"  Conforme descrito no comunicado emitido anteriormente, informamos que, em virtude do n�o pagamento do t�tulo do t�tulo tal,\n "
                                +"  com vencimento para "+dtvenc+", no valor de R$"+valor+", o(s) mesmo(s) ser�(�o) levado(s) a protesto, e os dados de v. senhoria\n "
                                +"  inscritos nos cadastros de restri��o ao cr�dito.\n\n"

                                +" 

                                +"Certos de sua compreens�o, mantemo-nos � disposi��o para a resolu��o desta pend�ncia. \n\n"

                                +"Por tratar-se de aviso autom�tico enviado eletronicamente, para o caso do referido pagamento j� ter sido efetuado, pe�o que entrem \n"
                                +"em contato para normaliza��o da situa��o descrita. \n\n"

                                +"Bras�lia-DF, xx de Xxxxxxxx de 2014. \n\n"

                                +"Atenciosamente, \n\n"); //carta03

                        emai.send(); //envia o email  
                    } catch (EmailException e) { //exception caso aconte�a algum erro ao enviar o email  
                        e.printStackTrace() ;
                        //chamar metodo  
                    } catch (Exception e) {  
                        e.printStackTrace();  
                    }  

                    System.out.println("saida 1");
                }  
            };  

            timer.scheduleAtFixedRate(tarefa, TEMPO, TEMPO);  
        }  
    }  

}

'

java

asked by anonymous 23.10.2014 / 02:17

2 answers

1

The Timer.scheduleAtFixedRate (TimerTask, long, long) method is used to repeat the task over and over for a certain period of time, which in this case is every 20 seconds (14 * 1440 = 20160 milliseconds ~ 20 seconds). I do not think you need Timer in that case. Just send one email after the other.

If you are using Timer to make it easier to create the thread, consider using the Timer.schedule (TimerTask, long) .

Finally, an alert for:

Timer timer = null;
if (timer == null) {
    timer = new Timer();
...
}

This construction is unnecessary, since timer will always be null in if. Switch to only:

Timer timer = new Timer();

In this case, teams will always be non-null.

23.10.2014 / 03:12

Nested Vector Logic - C ++ How to force login after running the application?

score 2 · Accepted Answer

You can try this part of the code add the following lines:

                    } catch (Exception e) {  
                    e.printStackTrace();  
                }  

                System.out.println("saida 1");
                timer.cancel();
                timer.purge();
            }  
        };  
    timer.schedule(tarefa, TEMPO).