1. float f = 0;
2. 
   
3. 
   // declare an array list of floats
4. ArrayList<Float> values;
   
5. // create an array list of floats
6. values = new ArrayList<Float>();
7. // Add a float to the arraylist
   
8. values.add(1.232);
9. // To get the last one in the array list we need to
10. // make sure it is not empty.
11. if(!values.isEmpty())
12.       f = values.get(values.size()-1);

thanks quarks , I think      f = values.get(f.size()-1); is wrong.

shouldn't it be values.get(values.size()-1) ?

1. ArrayList<Float> values = new ArrayList<Float>();
2. for (int i = 0; i < 10; i++)
3. {
4.   float r = random(10);
5.   values.add(r);
6.   println(r);
7. }
8. float f = values.get(values.size()-1);
9. println("Last: " + f);