<dependency>

    <groupId>com.google.guava</groupId>

    <artifactId>guava</artifactId>

    <version>{guava.version}</version>

</dependency>

List<Object> list = Lists.newArrayList();

//如果实例化一个List<String>
List<String> list = Lists.newArrayList("ABC", "DEF", "GHI");

Map<String, Map<String, List<Integer>>> map = Maps.newHashMap();

//如果创建一些不可变更的的Map, 或者是常量型的Map
Map<String, String> map = ImmutableMap.of("key", "value", "anotherKey", "anotherValue"....);

Map<String, Target> targetMap = Maps.uniqueIndex(List<Target>, new Function<Target, String>() {

    @Override

    public String apply(Target target) {

        return target.getId();

    }

});