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't traverse two lists at the same time with the enhanced for loop; you'll have to iterate through it with a traditional for loop:

for (int i = 0; i < list1.size(); i++)
{
    String str1 = list1.get(i);
    String str2 = list2.get(i);
    ...
}