Latest Tutorials| Questions and Answers|Ask Questions?|Site Map




Have Programming Question? Ask it here!
 
 
 


Thadeuse
Map
1 Answer(s)      a year and 6 months ago
Posted in : Java Beginners


If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map either iterator or for each loop or for loop


Advertisement
View Answers

October 5, 2012 at 4:01 PM


Here is an example of HashMap.

import java.util.*;

public class HashMapExample{

  public static void main(String[] args){
    HashMap hm = new HashMap();
    hm.put(1,"A");
    hm.put(2,"B");
    hm.put(1,"C");
    hm.put(3,"D");
    hm.put(4,"E");

    Set set = hm.entrySet();

    Iterator i = set.iterator();

    while(i.hasNext()){
      Map.Entry me = (Map.Entry)i.next();
      System.out.println(me.getKey() + " : " + me.getValue() );
    }
  }
}


Related Tutorials/Questions & Answers:
map
map  using map, i want display message based on id selected [both are strings]   i do no   Hi Friend, Try the following code...) { Map map=new HashMap(); map.put("Message1","Hello
Map
Map  If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map either iterator or for each loop or for loop
Advertisements
Map interface
Map interface  What is the Map interface
Hash Map
Hash Map  how to add the hash map objects in the list and iterate the objects
Interactive map
Interactive map  hi........ i require map to be zoom in and enlarge the area and show its detail. Can anyone tel me how can this be done using java swings .... plz help
Map code
Map code  hi................ I have map of navi mumbai, where i want to see the location vashi, nerul, turbhe.... means want to zoom into this area and then again zoom in and see nerul location more properly or other location
Map
hash map
hash map  write a program in hash map , that shows the value in asending order. but not key value. ex: key value ==== ===== k5 ashutosh k1 babita k7 debasis k2 vikas plz help me
hash map
=2; HashMap<Integer,Test> map=new HashMap<Integer,Test>
Iterate Tag used with a Map.
Iterate Tag used with a Map.  How Iterate Tag used with a Map
Map java Object to database.
Map java Object to database.  How do you map Java Objects with Database tables
solution of k map in c
solution of k map in c  write a program in c to solve k-map with digital circuit
parse map in java
parse map in java  What is a Parser? Can you give the source code to parse map in Java
about google map
about google map  how to add google map in website
about google map
about google map  how to add google map in website
add google map javascript
add google map javascript  How can i add google map using javascript in my web page?   Search for the " Google Maps Javascript API" it will allow you to embed the Google Map into your web Page
map on web page
map on web page   i want to insert an area map in my web page how can i do it ? please answer me soon. Its urgent
Google Map Integration - Ajax
Google Map Integration  Hi All, I am working on a vehicle tracking system project. I have to read data from sql server database and map the vehicle position in google map. I need to use ajax as the data is updated in every
Stoting file name in Map
Stoting file name in Map  how to store id and file name in map
ApplicationDevelopment Using Google Map
ApplicationDevelopment Using Google Map  I want application using google map please guide me how can i develop
Store ResultSt Data in a Map
Store ResultSt Data in a Map  i want to store data in a hash Map .Please solve my problem as soon as possible
Java Map Example
Java Map Example  How we can use Map in java collection?   The Map interface maps unique keys to value means it associate value to unique...(String[] args) { Map mp = new HashMap(); mp.put(new Integer(2
How to hold data in map
How to hold data in map  Holding data in map: i have user1 and he has account1,account2,accoutn3 like that user2,user3 will have accounts. now how to hold users and their accounts in hashmap
J2me Map load error
J2me Map load error  Hi , i am making a POC to load google map in my mobile,now i m getting the address of location by its lattitude and longitude in web page , but thing is i wana to store in my net beans emulator , its showing
Java tree map trouble
Java tree map trouble  This is a project for a class, and I am totally stuck! I've created a tree map using an input text file. I split the lines into fields so that I could work with 2 elements from the file. It appears
java code for PartialSearch using Map????
java code for PartialSearch using Map????  java code for Partial Search using Map
alias_to_entity_map
In this section, you will learn about attribute 'alias_to_entity_map' of method 'setResultTransformer' which converts each row of result into a Map
Site map - C Tutorials
Index  | About-us | Contact Us | Advertisement | Ask Questions | Site Map | Business Software Services India Tutorial Section   C Tutorials  | Java Tutorials | PHP Tutorials  | Linux
Java Map
Java Map         In Java, a Map is a kind of generalized array. It provides a more general way of storing elements. It is an object that maps keys to values. Map
Site Map
Site Map We have organized our site map for easy access. You can browser though Site Map to reach the tutorials and information pages. We will be adding the links to our site map as and when new pages are added
Using of [] operator of EL with the Map
Using [ ] operator of EL with the Map   ... Map key or a bean property name as well as the access to arrays and Lists. Map stores the values in the form of a key- value pair. Map can't have a duplicate
Reading Text file and storing in map
Reading Text file and storing in map  Hi I have multiple text files. I want to read thoses files and store those records in map. Map will be of "LinkedHashMap<String, Map<String, String>>" type. Please let me know
Java map building - Development process
Java map building  Hello All I want to build a map for a road network from ESRI shapefiles. Up to now i have the code that can read the shapfiles... to proceed further i need to build a map using these coodinates which i am unable
JavaScript google map API example.
JavaScript google map API example.  How to Use Google Maps API in JavaScript?   Google Maps- A map is a way of representation of your route... routes, a road map shows you road, street information. In the same way google map
Map Java Objects with Database tables
Map Java Objects with Database tables  How to map Java Objects with Database tables?   First write Java domain objects ie. beans with setter and getter methods. Then map java class to table and database columns to Java
Spring Map Factory, Spring Map Configuration
Spring Map Factory Ths MapFactoryBean is a simple factory for shared Map instance. The map element is defined in the xml bean definitions. The setSourceMap method set the source Map which is written in xml map element
Java Map Iterate
Map is an Interface in the Collection Framework. Map is implemented by its two sub classes HashMap Treemap Map has no iterator method. So use the entrySet() method.It returns the data as Set Example of Java Map
How to use Map in velocity
How to use Map in velocity       This Example shows you how to use map in velocity. The method...;map.put("libno", 1001);   list.add(map);   map 
Adding an Input Map to a Component
Adding an Input Map to a Component   ... map. Input map is used to perform actions according to the key strokes...* package. This class is used to create an input map. It performs the work
Spring Map Property
Spring Map Property The Spring Framework has bean support for the Collections. It provide list, set, map and props elements. Here in this tutorial you will see about the map elements which is used to set values inside the map
java code to compare two hash map objects
java code to compare two hash map objects  java code to compare two hash map objects
program on k-map with graphical circuit in c
program on k-map with graphical circuit in c  write a program in c to solve k-map with digital circuit
Spring Map Example
Spring Map Example In this example you will see how bean is prepared for injecting Map collection type key and its values. MapBean.java package spring.map.example; import java.util.Iterator
how to do map in iphone?-RV
how to do map in iphone?-RV  In Appdelegate.h @class MapKitDisplayViewController; @interface MapKitDisplayAppDelegate : NSObject <UIApplicationDelegate> { UIWindow *window; MapKitDisplayViewController
Wiring Map Collections
Wiring map collections The <map> element is used to store values in key...; defines a member of the Map. Lets take an example to demonstrate how map... and authorsInfo is of Map type. import java.util.*; public class Article
Java Map iterator with example
Java Map Iterator is an interface. It keeps the data in the key and value form. It is implemented by HashMap, Tree Map. Map has no iterator method. So...() method to get the data in Set object form. Java Map Iterator with Example
Introduction to Map and SortedMap Interface
Introduction to Map and SortedMap Interface       Map Interface: A Map... rather it has own interface hierarchy. Map provides a more general way
Using Arraylist or Hash Map - Java Interview Questions
Using Arraylist or Hash Map  what could b the pros and cons changing between Hash Map to Array List
Java Map Example
Map Interface adds keys to values. Every key in the Map Interface should be unique. It is part of java.util package. Each element in a map has a key and value. Each key-value pair is saved in a java.util.Map.Entry object. Map
to make a google map point to user defined location
to make a google map point to user defined location  Hi, i wish to develop an google map,that takes the input from a form(city,area &Country... button, the form should be submitted and then the google map should display
 

 

 

DMCA.com