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#Java - Code Snippets for '#Apache commons collections' - 9 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. 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 3. Get all Permutations of List Elements using Apache Commons PermutationIterator

List<String> list = new ArrayList();
list.add("Washington");
list.add("Nevada");
list.add("California");

PermutationIterator permIterator = new PermutationIterator((Collection) list);
      
permIterator.forEachRemaining(System.out::print); // prints [Washington, Nevada, California][Washington, California, Nevada][California, Washington, Nevada][California, Nevada, Washington][Nevada, California, Washington][Nevada, Washington, California]

   Like      Feedback     Permutations of collection elements  Permutations of List elements  Apache Commons  PermutationIterator  Iterator  Collections  .forEachRemaining  System.out::print  List  ArrayList


 Sample 4. 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


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 Sample 5. 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 6. Count elements of a collection matching a Predicate using Apache Commons IterableUtils

List<String> list = new ArrayList();
list.add("Washington");
list.add("Nevada");
list.add("California");
list.add("New York");
list.add("New Jersey");

// <String> long org.apache.commons.collections4.IterableUtils.countMatches(Iterable<String> input, Predicate<? super String> predicate)
      
System.out.println(IterableUtils.countMatches(list, p->((String)p).startsWith("N")));

   Like      Feedback     Apache Commons IterableUtils  Apache Commons  Predicate  Java 8  Count elements of a collection  java8


 Sample 7. 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


 Sample 8. Apache Commons MultiSet Example

MultiSet<String> multiSet = new HashMultiSet(); 
multiSet.add("Albama");
multiSet.add("Albama");
multiSet.add("Albama");
      
System.out.println(multiSet); // Prints [Albama:3]

   Like      Feedback     Set with duplicate values  MultiSet  Apache Commons Collections


 Sample 9. Create an UnmodifiableMultiSet ( Read only set allowing multiple values ) using Apache Commons

MultiSet<String> multiSet = new HashMultiSet(); 
multiSet.add("Albama");
multiSet.add("Albama");
multiSet.add("Albama");

System.out.println(multiSet); // Prints [Albama:3]
      
UnmodifiableMultiSet<String> unmodifiablemultiSet = (UnmodifiableMultiSet<String>) MultiSetUtils.unmodifiableMultiSet(multiSet);

unmodifiablemultiSet.add("Albama"); // throws java.lang.UnsupportedOperationException

   Like      Feedback     UnmodifiableMultiSet  Apache Commons Collections  Set  MultiSet



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