Solved

NPE for outY

Posted on 2011-03-03
4
350 Views
Last Modified: 2012-05-11
Please advice why I have null for outY if it's initialized  
public class SelectData extends TimerTask {

    private LionFXConnect conn;
    ArrayConverter aConverter;
    double outY[] = new double[10];
    double[] avg = new double[10];
    String sql;

    /**
     * @throws SQLException
     * @throws ClassNotFoundException
     * @throws IllegalAccessException
     * @throws InstantiationException
     * @throws NotDefinedException
     * @throws FieldNotFound
     * @throws Exception
     */
    public SelectData() throws SQLException, ClassNotFoundException,
                               IllegalAccessException, InstantiationException,
                               FieldNotFound, NotDefinedException, Exception {

        conn = new LionFXConnect();
        aConverter = new ArrayConverter();
    }

    public void run() {
        
//      System.out.println(new java.util.Date() + "        SelectData");
        
        try {
            ResultSet rs =
                conn.select("SELECT * FROM RBF_DATA_60 where timest = ( select max( timest ) from RBF_DATA_60 ) and rownum = 1");

            while (rs.next()) {

                outY[0] = rs.getDouble("OUTY0");
                outY[1] = rs.getDouble("OUTY1");
                outY[2] = rs.getDouble("OUTY2");
                outY[3] = rs.getDouble("OUTY3");
                outY[4] = rs.getDouble("OUTY4");
                outY[5] = rs.getDouble("OUTY5");
                outY[6] = rs.getDouble("OUTY6");
                outY[7] = rs.getDouble("OUTY7");
                outY[8] = rs.getDouble("OUTY8");
                outY[9] = rs.getDouble("OUTY9");

//                System.out.println(new java.util.Date() +
//                                   " ###################### SD   outY[0]   " + outY[0] + "     outY[1]   " + outY[1]);
                equals(rs);
                System.out.println("SD1    = " + outY[0]);
                aConverter.arrayConverter(outY);
                System.out.println("SD2    = " + outY[0]);
                ChartCommander.getInstance().chartEURUSD(avg , outY);
              System.out.println("SD3    = " + outY[0]);
                
            }
            rs.close();

        } catch (Exception ex) {
            Logger.getLogger(SelectData.class.getName()).log(Level.SEVERE,
                                                             null, ex);
        }

    }
}

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04.03.2011 1:09:08 connect.PMDS parseMarketDataSnapshot
SEVERE: null
java.lang.NullPointerException
	at charts.ChartCommander.chartEURUSD(ChartCommander.java:23)
	at connect.PMDS.parseMarketDataSnapshot(PMDS.java:89)
	at connect.DBFXConnect$1.messageArrived(DBFXConnect.java:133)
	at com.fxcm.internal.transport.FXCMGateway.update(FXCMGateway.java:828)
	at com.fxcm.messaging.util.fix.FIXUserSession$BackToUserQueue.run(FIXUserSession.java:675)
	at java.lang.Thread.run(Thread.java:680)
SD1    = 0.13682981
SD2    = 0.13682981
CC    = 0.13682981
SD3    = 0.13682981
SD1    = 0.13682981
SD2    = 0.13682981
CC    = 0.13682981
SD3    = 0.13682981

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          at charts.ChartCommander.chartEURUSD(ChartCommander.java:23)=>     System.out.println("CC    = " + outY[0]);
package charts;


public class ChartCommander {

    AlgochartEURUSD acEURUSD;

    private static ChartCommander instance = new ChartCommander();

    public static ChartCommander getInstance() {
        return instance;
    }

    public ChartCommander() {

        acEURUSD = new AlgochartEURUSD();
    }

    public void chartEURUSD(double[] avg, double[] outY) {

              if (avg[0] != 0 || outY[0] != 0){
                  
                System.out.println("CC    = " + outY[0]);

        acEURUSD.doEvent(avg, outY);
              }
    }
}

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0
Comment
Question by:gbcbr
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4 Comments
 
LVL 92

Expert Comment

by:objects
ID: 35032354
>       at connect.PMDS.parseMarketDataSnapshot(PMDS.java:89)

thats being called from PMDS, make sure you have assigned your array there correctly
0
 

Author Comment

by:gbcbr
ID: 35032377
I suppose it's ok
public class PMDS {

    DecisionCenterControl dcc;
    IGateway mFxcmGateway;
    MarketDataSnapshot incomingQuote;
    ITransportable message;

    public PMDS() {
        this.mFxcmGateway = DBFXConnect.getGateway();
        incomingQuote = (MarketDataSnapshot)message;
    }

    String symbol;
    double[] bidPx = new double[10];
    double[] askPx = new double[10];
    double[] avg = new double[10];
    double[] outY;
    String eurusd_bid;
    String eurusd_ask;
    String eurchf_bid;
    String eurchf_ask;
    String eurgbp_bid;
    String eurgbp_ask;
    String usdchf_bid;
    String usdchf_ask;
    String gbpusd_bid;
    String gbpusd_ask;
    String gbpchf_bid;
    String gbpchf_ask;
    String eurjpy_bid;
    String eurjpy_ask;
    String usdjpy_bid;
    String usdjpy_ask;
    String gbpjpy_bid;
    String gbpjpy_ask;
    String chfjpy_bid;
    String chfjpy_ask;

    public void parseMarketDataSnapshot(ITransportable message) 
    throws SQLException,
                                                                        ClassNotFoundException,
                                                                        InstantiationException,
                                                                        IllegalAccessException,
                                                                        FieldNotFound,
                                                                        Exception {

        if (message instanceof MarketDataSnapshot) {

            incomingQuote = (MarketDataSnapshot)message;
            symbol = incomingQuote.getInstrument().getSymbol();
            double bPx = incomingQuote.getBidOpen();
            double aPx = incomingQuote.getAskOpen();


            try {

                if ("EUR/USD".equalsIgnoreCase(symbol.trim())) {
                    
                    BorderControl.getInstance().borderControl(bidPx,
                                                              askPx);
                    bidPx[0] = bPx;
                    eurusd_bid = String.valueOf(bidPx[0]);
                    DCC.getInstance().setEURUSD_bid(eurusd_bid);
                    askPx[0] = aPx;
                    eurusd_ask = String.valueOf(askPx[0]);
                    DCC.getInstance().setEURUSD_ask(eurusd_ask);
                    avg[0] = (bidPx[0] + askPx[0])/2;
                    ChartCommander.getInstance().chartEURUSD(avg, outY);
                }

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0
 
LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 35032381
>     double[] outY;


should be:


    double[] outY = new double[10];


:)
0
 

Author Closing Comment

by:gbcbr
ID: 35032399
Thank you for the lession
0

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