import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Map.Entry; import java.util.Set; public class Test01 { public static void main(String[] args) { HashMap<String, String> hMap = new HashMap<>(); hMap.put("Ouou", "Schnauzer"); hMap.put("Yaya", "Labrador"); hMap.put("Fifi", "Labrador"); hMap.put("Meimei", "Schnauzer"); System.out.println("Using Iterator and enhanced for loop to loop through all dogs' nicknames and breeds: "); Set<Map.Entry<String,String>> entry = hMap.entrySet(); for (Iterator<Map.Entry<String,String>> ite = entry.iterator();ite.hasNext();) { System.out.println(ite.next()); } } }
Map uses entrySet() to traverse the collection
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