#Java - Code Snippets for '#Apache commons map'

#Java - Code Snippets for '#Apache commons map' - 10 code snippet(s) found

Sample 1. Usage of Apache Commons - ArrayListValuedHashMap

ListValuedMap<String,String> listValuedMap = new ArrayListValuedHashMap();

listValuedMap.put("United States", "Washington");

listValuedMap.put("Canada", "Ottawa");

listValuedMap.put("Canada", "Ottawa");

listValuedMap.put("South Africa", "Pretoria");

listValuedMap.put("South Africa", "Cape Town");

listValuedMap.put("South Africa", "Bloemfontein");



System.out.println(listValuedMap); // Values being added to the List and allow even duplicates

_{Like Feedback apache commons apache commons collections ArrayListValuedHashMap ListValuedMap}

Sample 2. Clear Map entries after expiration time using Apache commons PassiveExpiringMap

PassiveExpiringMap<String,String> cache = new PassiveExpiringMap<String,String>(1000); // Expiration time of 1 sec

cache.put("Key1", "Value1");

System.out.println(cache.containsKey("Key1"));

Thread.sleep(500);

System.out.println(cache.containsKey("Key1"));

Thread.sleep(500);

System.out.println(cache.containsKey("Key1"));

_{Like Feedback expiring cache using map Clear Map entries after expiration time PassiveExpiringMap}

Sample 3. Usage of Apache Commons - HashSetValuedHashMap

SetValuedMap<String,String> setValuedMap = new HashSetValuedHashMap();

setValuedMap.put("United States", "Washington");

setValuedMap.put("Canada", "Ottawa");

setValuedMap.put("Canada", "Ottawa");

setValuedMap.put("South Africa", "Pretoria");

setValuedMap.put("South Africa", "Cape Town");

setValuedMap.put("South Africa", "Bloemfontein");

        

System.out.println(setValuedMap); // Values being added to the Set and hence doesn't allow duplicates

_{Like Feedback apache commons apache commons collections apache commons map HashSetValuedHashMap SetValuedMap}

Sample 4. Write a Program for Graph Depth First Traversal using Apache Commons MultiMap

import java.util.ArrayList;

import java.util.Collection;

import java.util.HashSet;

import java.util.Set;



import com.google.common.collect.ArrayListMultimap;

import com.google.common.collect.Multimap;



public class Graph {

   private static Multimap<Integer,Integer> adjacentDirectedNodesMap = ArrayListMultimap.create();

   private static Set<Integer> alreadyVisited = new HashSet();

   

   static{

      adjacentDirectedNodesMap.put(1, 2);

      adjacentDirectedNodesMap.put(1, 3);

      adjacentDirectedNodesMap.put(1, 5);

      adjacentDirectedNodesMap.put(2, 4);

      adjacentDirectedNodesMap.put(4, 5);

   }

   

   public static void main(String[] args){

      ArrayList visited = new ArrayList();

      

      Integer startNode = 1;

      

      displayAdjacentNodes(startNode);

      

   }

   

   private static void displayAdjacentNodes(Integer integer){

      if(alreadyVisited.contains(integer)){

         return;

      }

      alreadyVisited.add(integer);

      System.out.println(integer);

      for(Integer adjacentNodes: adjacentDirectedNodesMap.get(integer)){

         displayAdjacentNodes(adjacentNodes);

      }

   }

   

}

_{Like Feedback graph traversal depth first algorithm}

Sample 5. Write a Program for Graph Breadth First Traversal using Apache Commons MultiMap

import java.util.ArrayList;

import java.util.Collection;

import java.util.HashSet;

import java.util.Map;

import java.util.Set;



import com.google.common.collect.ArrayListMultimap;

import com.google.common.collect.Multimap;



public class Graph {

   private static Multimap<Integer,Integer> adjacentDirectedNodesMap = ArrayListMultimap.create();

   private static Set<Integer> alreadyVisited = new HashSet();

   

   static{

      adjacentDirectedNodesMap.put(1, 2);

      adjacentDirectedNodesMap.put(1, 3);

      adjacentDirectedNodesMap.put(1, 5);

      adjacentDirectedNodesMap.put(2, 4);

      adjacentDirectedNodesMap.put(4, 5);

   }

   

   public static void main(String[] args){

      ArrayList visited = new ArrayList();

      

      Integer startNode = 1;

      

      displayAdjacentNodes(startNode);

      

   }

   

   private static void displayAdjacentNodes(Integer integer){

      System.out.println(integer);

      for(Map.Entry<Integer, Collection<Integer>> adjacentNodes: adjacentDirectedNodesMap.asMap().entrySet()){

         for(Integer integer1:adjacentNodes.getValue()){

            if(alreadyVisited.contains(integer1)){

               continue;

            }

            alreadyVisited.add(integer1);

            System.out.println(integer1);

         }

      }

   }

   

}

_{Like Feedback graph traversal breadth first traversal}

Sample 6. Clear Map entries after expiration time using Apache commons PassiveExpiringMap

PassiveExpiringMap<String,String> cache = new PassiveExpiringMap<String,String>(1,TimeUnit.SECONDS); // Expiration time of 1 sec

cache.put("Key1", "Value1");

System.out.println(cache.containsKey("Key1")); // prints true

Thread.sleep(1000);

System.out.println(cache.containsKey("Key1")); // prints false

_{Like Feedback Clear Map entries after expiration PassiveExpiringMap map apache commons TimeUnit.SECONDS Thread.sleep}

Sample 7. Make a map readonly using Apache Commons UnmodifiableMap

Map<String,String> map = new HashMap();

map.put("Key1", "Value1");



Map<String,String> unmodifiableMap = UnmodifiableMap.unmodifiableMap(map);

        

unmodifiableMap.put("Key2", "Value2"); // throws java.lang.UnsupportedOperationException

_{Like Feedback readonly map apache commons}

Sample 8. Make a Map entry read only using Apache Commons UnmodifiableMapEntry

Entry entry = new UnmodifiableMapEntry("Key2", "Value2");

entry.setValue("Value3"); // throws java.lang.UnsupportedOperationException

_{Like Feedback read only map entry UnmodifiableMapEntry Apache commons collections}

Sample 9. Print all elements of a ListValuedMap ( Apache Commons ) using forEach and System.out::println

ListValuedMap<String,String> listValuedMap = new ArrayListValuedHashMap();

listValuedMap.put("United States", "Washington");

listValuedMap.put("Canada", "Ottawa");

listValuedMap.put("Canada", "Ottawa");

listValuedMap.put("South Africa", "Pretoria");

listValuedMap.put("South Africa", "Cape Town");

listValuedMap.put("South Africa", "Bloemfontein");



listValuedMap.entries().forEach(System.out::println);

_{Like Feedback ListValuedMap apache commons System.out::println collections framework map}

Sample 10. Usage of Apache Commons CaseInsensitiveMap

Map<String, String> map = new CaseInsensitiveMap<String, String>();

map.put("US", "Washington");

map.put("us", "Washington DC");

        

System.out.println(map); // Prints {us=Washington DC} as Keys are case insensitive

_{Like Feedback CaseInsensitiveMap Map with Case insensitive keys apache commons apache commons collections}

Search Java Code Snippets