[Java] Multimap Example

1. Multimap Example

Download: guava google core library for Java

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package javautility; import com.google.common.collect.ArrayListMultimap; import com.google.common.collect.ListMultimap; import java.io.IOException; import java.util.Collection; public class JavaUtility { static void testMultiMap() { ListMultimap<String, String> map = ArrayListMultimap.create(); map.put("1","A"); map.put("1","a"); map.put("2","B"); map.put("3","C"); Collection<String> list = map.get("1"); list.forEach(System.out::println); } public static void main(String[] args) throws IOException { testMultiMap(); } }

Result:

A
a