[SOLVED] Unsafe or unchecked Operation in line 57
Can someone explain why I get this compiler warning (at line 57) . And how to prevent this. The output at this point is as expected. https://code.sololearn.com/cbL2ZJT3dBA7/?ref=app
When you declare private TreeMap<Integer,SortedSet> visited_fields; Don't forget to put in SortedSet's generic type in there as well Fix: private TreeMap<Integer,SortedSet<Integer>> visited_fields; Or you could just put @SuppressWarnings("unchecked") Over the move method just to ignore it, but it's not a fix.
Odyel Thank you. That works. Very nice 👍