Get Set view of Keys from Java HashMap example : HashMap « Collections Data Structure « Java

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Java » Collections Data Structure » HashMap Screenshots  Get Set view of Keys from Java HashMap example        import java.util.HashMap; import java.util.Iterator; import java.util.Set; public class Main {   public static void main(String[] args) {     HashMap<String, String> hMap = new HashMap<String, String>();     hMap.put("1", "One");     hMap.put("2", "Two");     hMap.put("3", "Three");     Set st = hMap.keySet();     Iterator itr = st.iterator();     while (itr.hasNext())       System.out.println(itr.next());     // remove 2 from Set     st.remove("2");     System.out.println(hMap.containsKey("2"));   } }                                 Related examples in the same category 1. Iterate through the values of Java HashMap example 2. Get Synchronized Map from Java HashMap example 3. Check if a particular key exists in Java HashMap example 4. Check if a particular value exists in Java HashMap example 5. Get Size of Java HashMap 6. Remove all values from Java HashMap example 7. Remove value from Java HashMap 8. Create Java Hashtable from HashMap 9. Sort an HashMap based on the keys 10. For keys of a map 11. For values of a map 12. For both the keys and values of a map 13. Storing Primitive Types in a Collection 14. Creating a Copy of a Collection: the objects are not cloned. 15. Use Iterator to loop through the map key set 16. Generic hashmap with String as key and Integer as value 17. Get key set and value set from map and use Iterator to loop through them 18. Clones a map 19. Hash map for counting references to Object keys. 20. Extended Version of java.util.HashMap that provides an extended get method accpeting a default value. 21. Compact HashMap 22. This class wraps a HashMap and provides methods by which key objects can be associated with "counting" values. 23. This extension of HashMap support duplicate keys 24. Concurrent Hopscotch HashMap