I have a program thats due tomorrow but I can't get past this error! "x cannot be resolved or is not a field?". Why does this keep popping up? Would it be better if I showed you more code?

for(int i=enemies.size()-1; i>=0; i--){
     Enemy peng = (Enemy) enemies.get(i);

     float dis = dist(x,y, peng.x,peng.y);
     float addedRadii = 8+diameter/2;
     TowMiliSec++;

     if(dis <= addedRadii){
       smallest = min(smallest, i);
     }
   }
   
   float biggestFac = max(x-enemies.get(smallest).x, y-enemies.get(smallest).y);
   float fac = biggestFac/3;

This little piece of code is actually written in another class (ArrayList) with it's own x & y. I am trying to subtract this x/y with the x/y of the Enemy.

class one{
int x1,y1;
}

class two{
int x2,y2;

Previous Code: max(x1-x2, y1-y2);
}

Kinda like this... except I know this wont work, but just an analogy.

On the face of it I think it should work: assuming the code up to the biggestFac declaration runs then it has already successfully accessed x and enemies.x.  Perhaps do as Cedric suggests and assign the enemies.get(smallest) to an Enemy variable before trying to access the properties.

Otherwise I'd check the value of 'smallest' after the for loop to make sure you're actually accessing a valid entry in the enemies array.  If that isn't the problem, as Cedric suggests, you need to post more code to put this in context.