Just use two separate lists of ArrayList<String> and it should work fine. Also you have to test for null whenever you pull anything out of datastore, something like
if null then return new ArrayList<String>(0) should work this case. On Mar 10, 4:28 pm, thierry Le conniat <[email protected]> wrote: > Hello, > how to do you retreive data , could you send jour java code ? > > On 10 mar, 17:28, Ganesh <[email protected]> wrote: > > > > > Hi, > > > I am trying to store two dimensional string array in google data > > store. I was getting an exception saying this data type not supported. > > I tried changing the string array object to java.util.arraylist (gave > > serizable = 'true' option). This time I was able to write the data > > successfully. But when I tried to retrieve it, I am facing null > > pointer exception. Can any body help me with this? > > > -Thanks > > Ganesh -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
