By default in S32DS one has to press Ctrl-space for autocomplete.
Go to the S32DS Windows menu -> Preferences -> Java -> Editor -> Content assist and checking the settings here.
Even by using the default settings, the content assist is not working.
Viewing on variable's declaration, by pressing Ctrl+Left Click(F3) on variable, it pops an error "Could not find symbol 'abc' in Index".
Build-all does not pops any error though.
for me is Autocomplete/Content assist working normally. Here is my settings (default one - I didn't change anything):
Did you try re-install S32DS or restart your PC Machine? May be there is no enough resources. Also rebuild index may help:
i have S32DS for Arm V2018.R1 and i do not have the Java option, just C/C++ option. In this i found the content assist but without the 2 checkboxes for autocompletion, as you have in the pic above?