Java tutorial
//package com.java2s; import com.google.common.collect.*; import java.util.List; import java.util.Map; public class Main { private static void immutableUtil() { System.out.println("----------immutableUtil----------"); Map<String, String> immutableMap = ImmutableMap.of("a", "A", "b", "B"); System.out.println(immutableMap); List<String> immutableList = ImmutableList.of("a", "b", "c"); System.out.println(immutableList); BiMap<String, Integer> biMap = ImmutableBiMap.of("a", 1, "b", 2); System.out.println(biMap.inverse()); System.out.println(biMap); } }