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set.add(key1); set.add(key2); set.add(key3); assertTrue(set.size() == 3); Object[] oArr = set.toArray(); if (oArr[0] == key1) { if (oArr[1] == key2) { assertTrue(oArr[2] == key3); } else { assertTrue(oArr[2] == key2);
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assertTrue(oArr[1] == key2); } } Integer[] iArr = new Integer[1]; iArr = (Integer[]) set.toArray(iArr); if (iArr[0] == key1) { if (iArr[1] == key2) { assertTrue(iArr[2] == key3); } else { assertTrue(iArr[2] == key2);