@Test
public void testCollectionInstance() {
Maps.newLinkedHashMap();
Lists.newArrayList();
Sets.newHashSet();
ObjectArrays.newArray(Integer.class, 10);
}
@Test
public void show() {
List<User> personList = Lists.newLinkedList();
Set<User> personSet = Sets.newHashSet();
Map<String, User> personMap = Maps.newHashMap();
Integer[] intArrays = ObjectArrays.newArray(Integer.class, 10);
// --------------------
Set<String> set = Sets.newHashSet("one", "two", "three");
List<String> list = Lists.newArrayList("one", "two", "three");
Map<String, String> map = ImmutableMap.of("ON", "TRUE", "OFF", "FALSE");
// 2,简化集合的初始化
List<User> personList2 = Lists.newArrayList(new User("zhuc-1", 20), new User("zhuc-2", 25));
Set<User> personSet2 = Sets.newHashSet(new User("zhuc-1", 20), new User("zhuc-2", 25));
Map<String, User> personMap2 =
ImmutableMap.of("hello", new User("zhuc-1", 20), "f**k", new User("zhuc-2", 25));
}