```java
Arrays.asList(“a”, “b”, “c”);
String[] strs = {"a", "b", "c"};
```
자바의 immutable?
```java
private static final Thing[] PRIVATE_VALUES = { ... };
public static final List<Thing> VALUES =
Collections.unmodifiableList(Arrays.asList(PRIVATE_VALUES));
```
```java
return ImmutableMap.of(
key1, value1,
key2, value2);
ImmutableMap.<String, String>builder()
.put(key1, value1)
.put(key2, value2)
.build();
```