(Java) Collection 초기화

• www.baeldung.com/java-init-list-one-line
• www.baeldung.com/java-initialize-hashmap
• www.baeldung.com/java-combine-multiple-collections

Arrays.asList(“a”, “b”, “c”);
String[] strs = {"a", "b", "c"};

자바의 immutable?

private static final Thing[] PRIVATE\_VALUES = { ... };
public static final List<Thing> VALUES =
Collections.unmodifiableList(Arrays.asList(PRIVATE\_VALUES));

return
ImmutableMap
.
of(


key1
, value1
,

key2
, value2
)
;




ImmutableMap
.
<
String
,
String
>
builder
()
   
.
put
(
key1
, value1
)
   
.
put
(key2, value2
)
.
build
()
;