Java: Can anyone explain what this code is?
http://i.imgur.com/K3CBk.png

There is a ArrayList of fish and the method is suppose to go through each fish and check if it is alive.

I don't know how to use iterators so I'm kinda confused on what that does, especially the last part when it says i = fish.iterator(); what does this line do?
I'm trying to do this in for loop

thanks

Question

Java: Can anyone explain what this code is?
http://i.imgur.com/K3CBk.png

There is a ArrayList of fish and the method is suppose to go through each fish and check if it is alive.

I don't know how to use iterators so I'm kinda confused on what that does, especially the last part when it says i = fish.iterator(); what does this line do?
I'm trying to do this in for loop

thanks

anonymous · Answer

The last "i = fish.iterator();" is unneeded.  An iterator is a forward-only data structure used to traverse a list.  You're using it correctly with this one exception.  Reassigning i in this case would 'reset' iterator such that you would be starting the traversal over each time you removed an item from the list.