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

Java 1.  2D Graphics GUI 2.  3D 3.  Advanced Graphics 4.  Ant 5.  Apache Common 6.  Chart 7.  Class 8.  Collections Data Structure 9.  Data Type 10.  Database SQL JDBC 11.  Design Pattern 12.  Development Class 13.  EJB3 14.  Email 15.  Event 16.  File Input Output 17.  Game 18.  Generics 19.  GWT 20.  Hibernate 21.  I18N 22.  J2EE 23.  J2ME 24.  JDK 6 25.  JNDI LDAP 26.  JPA 27.  JSP 28.  JSTL 29.  Language Basics 30.  Network Protocol 31.  PDF RTF 32.  Reflection 33.  Regular Expressions 34.  Scripting 35.  Security 36.  Servlets 37.  Spring 38.  Swing Components 39.  Swing JFC 40.  SWT JFace Eclipse 41.  Threads 42.  Tiny Application 43.  Velocity 44.  Web Services SOA 45.  XML Java Tutorial Java Source Code / Java Documentation Java Open Source Jar File Download Java Articles Java Products Java by API Photoshop Tutorials Maya Tutorials Flash Tutorials 3ds-Max Tutorials Illustrator Tutorials GIMP Tutorials C# / C Sharp C# / CSharp Tutorial C# / CSharp Open Source ASP.Net ASP.NET Tutorial JavaScript DHTML JavaScript Tutorial JavaScript Reference HTML / CSS HTML CSS Reference C / ANSI-C C Tutorial C++ C++ Tutorial Ruby PHP Python Python Tutorial Python Open Source SQL Server / T-SQL SQL Server / T-SQL Tutorial Oracle PL / SQL Oracle PL/SQL Tutorial PostgreSQL SQL / MySQL MySQL Tutorial VB.Net VB.Net Tutorial Flash / Flex / ActionScript VBA / Excel / Access / Word XML XML Tutorial Microsoft Office PowerPoint 2007 Tutorial Microsoft Office Excel 2007 Tutorial Microsoft Office Word 2007 Tutorial

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.