java - SQLException：このResultSetは、3つの結果セットをループしようとすると閉じられます

Question

m 3つの結果セットをループして、それらの値を比較しようとしています。btこの例外をスローします...誰かがどこを通過しているのか私を助けることができますか？これがコードの一部です：

java.lang.Object [] reconciledPaymentDetails = null;

java.util.Vector shiftsVector = new java.util.Vector(1, 1);

String status = "";

try {

    Class.forName("org.postgresql.Driver");
    } 
catch (ClassNotFoundException ex) {
    Logger.getLogger(DBConnection.class.getName()).log(Level.SEVERE, null, ex);
   }
try {
    connDB = DriverManager.getConnection("jdbc:postgresql://" + hostName + ":" + portNumber + "/" + dbName, userName, password);

    System.out.println("Connection established : [" + connDB.toString() + "]");

    java.sql.Statement pstmt = connDB.createStatement();

    java.sql.Statement pstmtShifts = connDB.createStatement();

    java.sql.ResultSet rset = pstmt.executeQuery("SELECT DISTINCT payment_mode,transaction_type, credit FROM ac_cash_collection WHERE shift_no = '" + shiftNumber + "'");

    while (rset.next()) {

        java.sql.ResultSet rsetShifts = pstmtShifts.executeQuery("SELECT DISTINCT amount, shift_amount FROM ac_shift_collections WHERE shift_no = '" + shiftNumber + "' AND pay_mode ilike '"+rset.getString(1) +"'");

        while (rsetShifts.next()) {

            java.sql.ResultSet rset2 = pstmt.executeQuery("select debit from ac_cash_book where shift_no='"+shiftNumber+"'");


           while (rset2.next()){

                double debit =rset2.getDouble("debit");

                if((rset2.getDouble("debit")<=0 ))

             status = "no_banked";

               else if((rset2.getDouble("debit")==rsetShifts.getDouble("amount"))
                        && (rsetShifts.getDouble("amount"))< rsetShifts.getDouble("shift_amount"))
                        status= "BntClosed";
                else if (rset2.getDouble(1)==rsetShifts.getDouble("shift_amount"))
                    status ="bClosed";




            shiftsVector.addElement(rset.getString(1)+":"+rsetShifts.getString(1)+":"+status);

            } 
        }
    }