package basic;

import java.util.List;

import java.util.Map;

import java.util.Set;

import com.google.common.collect.ImmutableMap;

import com.google.common.collect.ImmutableMultimap;

import com.google.common.collect.ImmutableSortedMap;

import com.google.common.collect.LinkedHashMultimap;

import com.google.common.collect.LinkedListMultimap;

import com.google.common.collect.Lists;

import com.google.common.collect.Maps;

import com.google.common.collect.Sets;

public class CollectionsExample {

static final Map<String, String> staticMap = Maps.newHashMap();

static final List<Integer> staticList = Lists.newArrayList(1, 3, 4, 5, 23,

3);

static final Set<Integer> staticSet = Sets.newHashSet(3, 4, 1, 3, 4, 4, 2,

3);

// must <=5

static ImmutableMap<Integer, String> immutableMap = ImmutableMap.of(11,

"val1", 22, "val2", 3, "val3", 6, "val11", -1, "val345");

static ImmutableSortedMap<Integer, String> immutableSortedMap = ImmutableSortedMap

.copyOf(immutableMap);

// 一键多值

static ImmutableMultimap<Integer, String> immutableMultimap = ImmutableMultimap

.of(22, "one val", 11, "two val", 11, "test1", 22, "test2", 1, "1");

static LinkedListMultimap<Integer, String> linkedListMultimap = LinkedListMultimap

.create(immutableMultimap);

static {

linkedListMultimap.put(11, "test1"); //value里面 可以重复

}

static void staticCollectionTest() {

System.out.println(staticMap);

System.out.println(staticList);

System.out.println(staticSet);

}

static void immutableCollectionTest() {

System.out.println(immutableMap);

System.out.println(immutableSortedMap);

System.out.println(immutableMultimap);

}

static void mutableCollectionTest() {

System.out.println(linkedListMultimap);

LinkedHashMultimap<Integer, String> jtestHashMultimap = LinkedHashMultimap

.create(linkedListMultimap); //会去掉value里面重复的值

System.out.println(jtestHashMultimap);

}

public static void main(String[] args) {

staticCollectionTest();

immutableCollectionTest();

mutableCollectionTest();

}

}