ArrayList array = new ArrayList();
assertEquals(0, array.size());
assertTrue(array.isEmpty());
array.add(new Integer(0));
array.add(0, new Integer(1));
array.add(1, new Integer(2));
array.add(new Integer(3));
array.add(new Integer(1));
assertEquals(5, array.size());
assertFalse(array.isEmpty());
assertEquals(1, ((Integer) array.get(0)).intValue());
assertEquals(2, ((Integer) array.get(1)).intValue());
assertEquals(0, ((Integer) array.get(2)).intValue());
assertEquals(3, ((Integer) array.get(3)).intValue());
assertEquals(1, ((Integer) array.get(4)).intValue());
assertFalse(array.contains(null));
assertTrue(array.contains(new Integer(2)));
assertEquals(0, array.indexOf(new Integer(1)));
assertEquals(4, array.lastIndexOf(new Integer(1)));
assertTrue(array.indexOf(new Integer(5)) < 0);
assertTrue(array.lastIndexOf(new Integer(5)) < 0);
array.remove(1);
array.remove(1);
assertEquals(3, array.size());
assertFalse(array.isEmpty());
assertEquals(1, ((Integer) array.get(0)).intValue());
assertEquals(3, ((Integer) array.get(1)).intValue());
assertEquals(1, ((Integer) array.get(2)).intValue());
assertFalse(array.contains(null));
assertFalse(array.contains(new Integer(2)));
assertEquals(0, array.indexOf(new Integer(1)));
assertEquals(2, array.lastIndexOf(new Integer(1)));
assertTrue(array.indexOf(new Integer(5)) < 0);
assertTrue(array.lastIndexOf(new Integer(5)) < 0);
array.clear();
assertEquals(0, array.size());
assertTrue(array.isEmpty());
assertTrue(array.indexOf(new Integer(5)) < 0);
assertTrue(array.lastIndexOf(new Integer(5)) < 0);
ArrayList al = new ArrayList();
assertFalse(al.remove(null));
assertFalse(al.remove("string"));
al.add("string");
al.add(null);
assertTrue(al.remove(null));
assertTrue(al.remove("string"));
