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How To Write An Iterator Java

Best Java code snippets using java.util.Iterator.<init> (Showing top 20 results out of 315)

  • Common ways to obtain Iterator
                    

private void myMethod ()

{

}

                                                                                                                                        Iterator<Integer> powersOfTwo =                                                                                    new                                                                                                                                                  AbstractSequentialIterator<Integer>                                                              (                                                              1                                                              ) {                                                                                                                                                                                                                                                                                                                                        protected                                                                                      Integer computeNext(Integer previous) {                                                                                                                                                                                                                                return                                                                                      (previous ==                                                                                    1                                                                                      <<                                                                                    30                                                              ) ? null : previous *                                                                                    2                                                              ;                                                                                                                      }                                                                            };                                  
                                                                                                                                                                                                                            public                                                                                      Iterator<T> iterator(                                                              int                                                                                      index) {                                                                                                                                                                    Iterator<T> it =                                                                                    new                                                                                                                                                  DoublelinkedlistIterator                                                              ();                                                                                                                                                                                                                                for                                                                                      (                                                              int                                                                                      i =                                                                                    0                                                              ; i < index && it.hasNext(); i++, it.next());                                                                                                                                                                                                                                return                                                                                      it;                                                                                                  }                                  
                                                                                                                                                                                                                            import                                                                                      org.neo4j.graphdb.*;                                                                                                                                            import                                                                                      org.neo4j.helpers.Predicate;                                                                                                                                            import                                                                                      org.neo4j.helpers.collection.FilteringIterator;                                                                                                                                                          ...                                                                                                                                                          try                                                                                      (ResourceIterator<Node> nodes =                                                                                                                                                                    graphDatabaseService.findNodes(DynamicLabel.label(                                                              "LABEL1"                                                              ))) {                                                                                                                                                                                                                            Iterator<Node> nodeWithAllLabels =                                                                                    new                                                                                                                                                  FilteringIterator<>                                                              (nodes,                                                                                                                                                                    node -> node.hasLabel(DynamicLabel.label(                                                              "LABEL2"                                                              )) &&                                                                                                                                                                    node.hasLabel(DynamicLabel.label(                                                              "LABEL3"                                                              ))                                                                                                                      );                                                                                                                                                                                                                                                                                                                                                                    }                                  
                                                                                                                                                                                                                            public                                                                                      Iterator<E> iterator(                                                              int                                                                                      x){                                                                                                                                                                                                                            Iterator<E> it =                                                                                    new                                                                                                                                                  ListIterator                                                              ();                                                                                                                                                                                                                                                                                        for                                                                                      (; x >                                                                                    0                                                              ; --x){                                                                                                                      it.next();                                                                            }                                                                                                                                                                                      return                                                                                      it;                                                                                                  }                                  
                                                                                                                                                                Iterator<Choice> iter =                                                                                    new                                                                                                                                                  list.iterator                                                              ();                                                                                                                                            while                                                                                      iterator.hasNext(){                                                                                                                      iter.next().add( option );                                                        }                                  
                                                                                                                                                                                                                            public                                                                                      Iterator<E> iterator(                                                              int                                                                                      x) {                                                                                                                                                                                                                                if                                                                                      (x <                                                                                    0                                                                                      ||                                                                                    this                                                              .size() < x) {                                                                                                                                                                                                                                throw                                                                                                                                                  new                                                                                      IndexOutOfBoundsException();                                                                                                                      }                                                                                                                                                                                  Iterator<E> it =                                                                                    new                                                                                                                                                  ListIterator                                                              ();                                                                                                                                                                                                                                                                                        for                                                                                      (; x >                                                                                    0                                                              ; --x) {                                                                                                                                                                    it.next();                                                                                                                                                                                                                              }                                                                                                                                                                                      return                                                                                      it;                                                                                                  }                                  
                                                                                                                  List<String[]> input = Arrays.asList(                                                                                                                                                                                      new                                                                                      String[] {                                                              "such"                                                              ,                                                                                    "nice"                                                              ,                                                                                    "question"                                                              },                                                                                                                                                                                                                                new                                                                                      String[] {                                                              "much"                                                              ,                                                                                    "iterator"                                                              },                                                                                                                                                                                                                                new                                                                                      String[] {                                                              "very"                                                              ,                                                                                    "wow"                                                              }                                                                                                  );                                                                                                  Iterator<Collection<String>> it =                                                                                    new                                                                                                                                                  CombinatorIterator                                                              (input);                                                                                                  it.forEachRemaining(System.out::println);                                  
                                                                                                                                                                List<String> jedis = asList(                                                              "Obiwan"                                                              ,                                                              "Yoda"                                                              ,                                                              "Luke"                                                              );                                                                                                                                            List<String> siths = asList(                                                              "Lord Sidious"                                                              ,                                                                                    "Darth Mul"                                                              ,                                                                                    "Darth Vader"                                                              );                                                                                                                                            List<String> padawans = asList(                                                              "Anakin"                                                              ,                                                                                    "Jarjar"                                                              ,                                                                                    "Poncho"                                                              );                                                                                                                                                                                                    Iterator<Triplet> iter =                                                                                    new                                                                                                                                                  TripletIterator                                                              (jedis, siths, padawans);                                                                                                                                            while                                                              (iter.hasNext()){                                                                                                                      Triplet t = iter.next();                                                                            System.out.println(t);                                                        }                                  
                                                                                                                                                                Iterator<Point> pointIterator =                                                                                    new                                                                                                                                                  PointParser                                                              ();                                                                                                  Spliterator<Point> pointSpliterator = Spliterators.spliteratorUnknownSize(pointIterator, Spliterator.IMMUTABLE | Spliterator.NONNULL);                                                                                                  Set<Point> result = StreamSupport.stream(pointSpliterator,                                                                                    true                                                              )                                                                                                                                                                    .filter(                                                              this                                                              ::withinDistance)                                                                                                                      .collect(Collectors.toSet());                                  
                                                                                                                                                                                                                            public                                                                                      <T> LinkedList<T> sort(LinkedList<T> list){                                                                                                                                                                    Iterator<T> iter =                                                                                    new                                                                                                                                                  list.iterator                                                              ();                                                                                                                                                                                                                                while                                                                                      (iter.hasNext()){                                                                                                                      T t = iter.next();                                                                            ...                                                                            }                                                        }                                  
                                                                                                                                                                                                      public                                                                                                                                                  static                                                                                                                                                  final                                                                                      Iterator<Integer> RAND_INT_ITER =                                                                                                                                                                                                                                new                                                                                                                                                  AbstractIterator<Integer>                                                              () {                                                                                                                      @Override                                                                                                                                                                                      protected                                                                                      Integer computeNext() {                                                                                                                                                                                                                                return                                                                                      ThreadLocalRandom.current().nextInt();                                                                                                                      }                                                                            };                                  
                                                                                                                                                                                                                            final                                                                                      Iterator<Integer> series =                                                                                    new                                                                                                                                                  AbstractLinkedIterator<Integer>                                                              (                                                              100                                                              ) {                                                                                                                                                                                                                            @Override                                                                                    protected                                                                                      Integer computeNext(                                                              final                                                                                      Integer previous) {                                                                                                                                                                                                                                return                                                                                      previous ==                                                                                    80                                                                                      ? null : previous -                                                                                    1                                                              ;                                                                                                                      }                                                        };                                                                                                  while                                                                                      (series.hasNext()) {                                                                                                                      System.out.println(series.next());                                                        }                                  
                                                                                                                                                                Iterator<Long> i =                                                                                    new                                                                                                                                                  Counter                                                              (                                                              0                                                              ,                                                                                    50                                                              );                                                                                                                                            while                                                                                      (i.hasNext()) {                                                                                                                                                                    System.out.println(i.next());                                                                                                                                                                                                          }                                  
                                                                                                                                                                                                                            int                                                                                      i =                                                                                    0                                                              ;                                                                                                                                            Iterator<Kid> it =                                                                                    new                                                                                                                                                  ArrayIterator<>                                                              (kids);                                                                                                                                            StringBuffer sb =                                                                                    new                                                                                      StringBuffer();                                                                                                                                            while                                                                                      (it.hasNext()) {                                                                                                                      Kid kid = it.next();                                                                                                                                                                                      if                                                                                      (!kid.hasToy())                                                                                    continue                                                              ;                                                                                                                                                                    sb.append(++i).append(                                                              "."                                                              ).append(kid.getSurname());                                                                                                                                                                                                                                if                                                                                      (it.hasNext()) {                                                                                                                                                                    sb.append(                                                              ", "                                                              );                                                                                                                      }                                                        }                                  
                                                                                                                                                                List<List<Integer>> elements = Arrays.asList(Arrays.asList(                                                              1                                                              ), Arrays.asList(                                                              2                                                              ,                                                                                    3                                                              ), Arrays.asList(                                                              4                                                              ,                                                                                    5                                                              ,                                                                                    6                                                              ));                                                                                                                                            Iterator<List<Integer>> combinations =                                                                                    new                                                                                                                                                  Combinations<>                                                              (elements);                                                                                                  combinations.forEachRemaining(System.out::println);                                  
                                                                                                                                                                String s =                                                                                    "1 56 123 30 0"                                                              ;                                                                                                                                                                                                    Iterator<Double> it =                                                                                    new                                                                                                                                                  DoubleIterator                                                              (                                                              new                                                                                      ByteArrayInputStream(s.getBytes()));                                                                                                                                            while                                                              (it.hasNext()) {                                                                                                                      System.out.println(it.next());                                                        }                                                                                                  it =                                                                                    new                                                                                      NoiseIterator(                                                              new                                                                                      DoubleIterator(                                                              new                                                                                      ByteArrayInputStream(s.getBytes())));                                                                                                                                            while                                                              (it.hasNext()) {                                                                                                                      System.out.println(it.next());                                                        }                                  
                                                                                                                                                                List<String> strings = Arrays.asList(                                                                                    "1"                                                              ,                                                              "2"                                                              ,                                                              "3"                                                                                      ) ;                                                                                                                                                                                                                                                                                                                                                                    Iterator<Integer> iter =                                                                                    new                                                                                                                                                  Collector<>                                                              ( strings,                                                                                    new                                                                                      Mapper<String,Integer>() {                                                                                                                      @Override                                                                                                                                                                                      public                                                                                      Integer apply( String v ) {                                                                                                                                                                                                                                return                                                                                      Integer.parseInt( v ) *                                                                                    2                                                                                      ;                                                                                                                      }                                                        } ) ;                                                                                                                                                                                                                                                                                                                          List<Integer> numbers =                                                                                    new                                                                                      ArrayList<>() ;                                                                                                                                            while                                                              ( iter.hasNext() ) {                                                                                                                      numbers.add( iter.next() ) ;                                                        }                                  
                                                                                                                                                                Predicate<Object[]> predicate =                                                                                    new                                                                                      Predicate<>() {                                                                                                                      evaluate(Object[] obj) {                                                                                                                                                                                      return                                                                                      (obj[                                                              2                                                              ].equals(                                                              "Closed"                                                              ));                                                                                                                      }                                                                            };                                                                                                                                                          Iterator<Object[]> filteredIterator =                                                                                    new                                                                                                                                                  FilterIterator<>                                                              (                                                                                                                      resultList.iterator,                                                                            predicate                                                                            );                                  
                                                                                                                                                                Iterator sheetInterator =                                                                                    new                                                                                                                                                  Itertor                                                              ();                                                                                                                                            Set<Object> set =                                                                                    new                                                                                      HashSet();                                                                                                                                            while                                                              (sheetInterator.hasNext()) {                                                                                                                      Row myrow = (Row) obj.next();                                                                            Iterator rowIterator = myrow.iterator();                                                                                                                                                                                      while                                                              (rowIterator.hasNext()) {                                                                                                                      Cell cell = (Cell) rowIterator.next();                                                                            String value = cell.getValue();                                                                                                                                                                                      if                                                              (!set.add(value)){                                                                                                                                                                                                                                                                                                                                                                          }                                                                            }                                                        }                                  

How To Write An Iterator Java

Source: https://www.tabnine.com/code/java/methods/java.util.Iterator/%3Cinit%3E

Posted by: sutherlandsalict.blogspot.com

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