nested foreach statement in java

Question

Is it possible to nest foreach statements in java and start the nested statement at the current index that the outer foreach loop is at?

So if I have

List<myObj> myObjList = new ArrayList<myObj>();

for (myObj o : myObjList){
    // how do I start the nested for loop at the current spot in the list?
    for(

}

Thanks!

Answer 1

Here's a way to do it by keeping track of the index yourself, then using subList to start the inner loop at the right spot:

int i = 0;
for (myObj o1 : myObjList) {
    for (myObj o2 : myObjList.subList(i, myObjList.size())) {
        // do something
    }
    i++;
}

I think this is clearer than using basic for loops, but that's certainly debatable. However, both should work, so the choice is yours. Note that if you are using a collection that does not implement List<E>, this will not work (subList is defined on List<E> as the idea of an "index" really only makes sense for lists).