【多选题】
A System.out.println(list.toString());
B for (int i = 0; i < list.size(); i++)
{
System.out.println(list.get(i));
}
C for (Object obj : list)
{
System.out.println(obj);
}
D Iterator it = list.iterator();
while (it.hasNext())
{
System.out.println(it.next());
}
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