Column 'ColumnName' cannot be null error: though schema set to accept

[Anonymous]

Hello,
I can't seem to get rid of NULLs appearing in my job (and stopping the mapping due to the above error)
At first I had "Nullable" unchecked, so I can understand the error...
Then I checked Nullable and also gave my fields default values as well (then removed the default values)
Still when I run the job I get the Column 'ColumnName' cannot be null
Ideally I'd like to actually make them not null, but place a default value in them as part of the ETL
Thank You

[willm1]

Probably best to check for both the absence of null and the existence of a value..
row1.FOERNAMN + " " + ((row1.EFTERNAMN != null && row1.EFTERNAMN.length() > 0) ? row1.EFTERNAMN : "")