import java.util.LinkedHashMap; public class Main { public static void main(String[] args) { LinkedHashMap<String,String> lHashMap = new LinkedHashMap<String,String>(); lHashMap.put("1", "One"); lHashMap.put("2", "Two"); lHashMap.put("3", "Three"); lHashMap.clear(); System.out.println(lHashMap.size()); } }