In Java, how to traverse two lists at the same time?

Question

E.g.

for(String str : list1) {
...
}

for(String str : list2) {
...
}

suppose we are sure that list1.size() equals list2

Answer 1

You can use iterators:

Iterator it1 = list1.iterator();
Iterator it2 = list2.iterator();
while(it1.hasNext() && it2.hasNext()) { .. }

Or:

for(Iterator it1 = ... it2..; it1.hasNext() && it2.hasNext();) {...}