Getting the difference between two sets

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So if I have two sets:

Set<Integer> test1 = new HashSet<Integer>();
test1.add(1);
test1.add(2);
test1.add(3);

Set<Integer> test2 = new HashSet<Integer>();
test2.add(1);
test2.add(2);
test2.add(3);
test2.add(4);
test2.add(5);

Is there a way to compare them and only have a set of 4 and 5 returned?

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