循环到另一个列表Java时尝试向列表中添加元素

Question

I have a code with 2 lists:

final List<String> imageList = new ArrayList<String>();

and

List<BacktoryObject> todoNotes = response.body();

for (BacktoryObject todo : todoNotes) {

}

I just want to loop into todoNotes and add elements to imageList for example like:

List<BacktoryObject> todoNotes = response.body();

for (BacktoryObject todo : todoNotes) {
   imageList.add("hello");
}

but it didn't work and nothing added to imageList and I'm 100% sure my for loop works perfectly. What should I do for this?

Answer 1

By the looks of it, your code should work fine. You can try this though. It does the same thing, but much faster.

int n = todoNotes.size();
while (n-- > 0) imageList.add("hello");