Two contradictory errors about Type mismatch in Java?

Two contradictory errors about Type mismatch in Java?

What on earth could be causing this? I'm getting two contradicting errors
on one method I'm trying to create in a java program
public void numberOfTrianglesIncidentToVertex(){
for(String pairs: neighbors.get(2)){ // Type mismatch: cannot
convert from element type Integer to List<Integer>
}
int fail = neighbors.get(2); // Type mismatch: cannot convert
from List<Integer> to int
}
The neighbors variable is declared in a super class as follows:
List<List<Integer>> neighbors
= new ArrayList<List<Integer>>();
I don't know why it would tell me on one line that its an Integer and
can't be converted to a List of integers and then on the very next line
just change its mind and say the exact opposite. which is it?