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QUESTION
After the following code sequence is executed, what are the contents at ArrayList index 1 in a?
After the following code sequence is executed, what are the contents at ArrayList index 1 in a?
ArrayList<Integer> a = new ArrayList<Integer>();
a.add(7);
a.add(10);
a.add(21);
a.set(1, 4);
a.remove(0);
The choices are :
a.10
a.7
c.4
d.21
