QuickBooks Online Java SDK DataService executeBatch() causing NullPointerException

Question

I would suggest you to try it from your system(not using GAE). If it works well, then you may need to configure your GAE env(may be some proxy settings ? or limited outbound requests etc).

I tried the following code and it worked fine.

public void createNoOfPurchaseUsingBatch(int noOfPurchaseInBatch) {

    BatchOperation batchOperation = new BatchOperation();

    for (int i = 1; i <= noOfPurchaseInBatch; i = i + 1) {
        Customer customer = createCustomer();
        batchOperation.addEntity(customer, OperationEnum.CREATE, "bID" + i);
    }
    try {
        this.service.executeBatch(batchOperation);
    } catch (FMSException e) {
        e.printStackTrace();
    }
}

private Customer createCustomer() {
    Customer cust = new Customer();
    cust.setDisplayName("HelloWorld " + UUID.randomUUID().toString().substring(0, 5));
    return cust;
}

Request

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<IntuitBatchRequest xmlns="http://schema.intuit.com/finance/v3">
    <BatchItemRequest bId="bID1" operation="create">
        <Customer>
            <DisplayName>HelloWorld 0d89f</DisplayName>
        </Customer>
    </BatchItemRequest>
    <BatchItemRequest bId="bID2" operation="create">
        <Customer>
            <DisplayName>HelloWorld 90251</DisplayName>
        </Customer>
    </BatchItemRequest>
</IntuitBatchRequest>

Response

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<IntuitResponse xmlns="http://schema.intuit.com/finance/v3" time="2014-05-01T06:56:43.373-07:00">
    <BatchItemResponse bId="bID1">
        <Customer domain="QBO" sparse="false">
            <Id>7</Id>
            <SyncToken>0</SyncToken>
            <MetaData>
                <CreateTime>2014-05-01T06:56:43-07:00</CreateTime>
                <LastUpdatedTime>2014-05-01T06:56:43-07:00</LastUpdatedTime>
            </MetaData>
            <FullyQualifiedName>HelloWorld 0d89f</FullyQualifiedName>
            <DisplayName>HelloWorld 0d89f</DisplayName>
            <PrintOnCheckName>HelloWorld 0d89f</PrintOnCheckName>
            <Active>true</Active>
            <Taxable>false</Taxable>
            <Job>false</Job>
            <BillWithParent>false</BillWithParent>
            <Balance>0</Balance>
            <BalanceWithJobs>0</BalanceWithJobs>
            <CurrencyRef name="Australian Dollar">AUD</CurrencyRef>
            <PreferredDeliveryMethod>Email</PreferredDeliveryMethod>
        </Customer>
    </BatchItemResponse>
    <BatchItemResponse bId="bID2">
        <Customer domain="QBO" sparse="false">
            <Id>8</Id>
            <SyncToken>0</SyncToken>
            <MetaData>
                <CreateTime>2014-05-01T06:56:43-07:00</CreateTime>
                <LastUpdatedTime>2014-05-01T06:56:43-07:00</LastUpdatedTime>
            </MetaData>
            <FullyQualifiedName>HelloWorld 90251</FullyQualifiedName>
            <DisplayName>HelloWorld 90251</DisplayName>
            <PrintOnCheckName>HelloWorld 90251</PrintOnCheckName>
            <Active>true</Active>
            <Taxable>false</Taxable>
            <Job>false</Job>
            <BillWithParent>false</BillWithParent>
            <Balance>0</Balance>
            <BalanceWithJobs>0</BalanceWithJobs>
            <CurrencyRef name="Australian Dollar">AUD</CurrencyRef>
            <PreferredDeliveryMethod>Email</PreferredDeliveryMethod>
        </Customer>
    </BatchItemResponse>
</IntuitResponse>

Thanks