本文整理了Java中java.util.List.forEach()方法的一些代码示例，展示了List.forEach()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。List.forEach()方法的具体详情如下：
包路径：java.util.List
类名称：List
方法名：forEach

List.forEach介绍

暂无

代码示例

canonical example by Tabnine

private void mappingWordsLength(List<String> wordsList) {
 Map<Integer, Set<String>> mapping = new HashMap<>();
 for (String word : wordsList) {
  mapping.computeIfAbsent(word.length(), HashSet::new).add(word);
 }
 List<Integer> lengths = new LinkedList<>(mapping.keySet());
 Collections.sort(lengths);
 lengths.forEach(n -> System.out.println(mapping.get(n).size() + " words with " + n + " chars"));
}

代码示例来源：origin: spring-projects/spring-framework

/**
 * {@inheritDoc}
 * <p>This implementation creates a single {@link DefaultDataBuffer}
 * to contain the data in {@code dataBuffers}.
 */
@Override
public DefaultDataBuffer join(List<? extends DataBuffer> dataBuffers) {
  Assert.notEmpty(dataBuffers, "DataBuffer List must not be empty");
  int capacity = dataBuffers.stream().mapToInt(DataBuffer::readableByteCount).sum();
  DefaultDataBuffer result = allocateBuffer(capacity);
  dataBuffers.forEach(result::write);
  dataBuffers.forEach(DataBufferUtils::release);
  return result;
}

代码示例来源：origin: apache/flink

@SuppressWarnings("unchecked")
public TtlVerificationContext(
    int key,
    @Nonnull String verifierId,
    @Nonnull List<ValueWithTs<?>> prevUpdates,
    @Nonnull TtlUpdateContext<?, ?> updateContext) {
  this.key = key;
  this.verifierId = verifierId;
  this.prevUpdates = new ArrayList<>();
  prevUpdates.forEach(pu -> this.prevUpdates.add((ValueWithTs<UV>) pu));
  this.updateContext = (TtlUpdateContext<UV, GV>) updateContext;
}

代码示例来源：origin: spring-projects/spring-framework

@Override
public Map<String, String> toSingleValueMap() {
  Map<String, String> singleValueMap = new LinkedHashMap<>(this.headers.size());
  this.headers.entries()
      .forEach(entry -> {
        if (!singleValueMap.containsKey(entry.getKey())) {
          singleValueMap.put(entry.getKey(), entry.getValue());
        }
      });
  return singleValueMap;
}

代码示例来源：origin: spring-projects/spring-framework

private Mono<Void> invokeModelAttributeMethods(BindingContext bindingContext,
    List<InvocableHandlerMethod> modelMethods, ServerWebExchange exchange) {
  List<Mono<HandlerResult>> resultList = new ArrayList<>();
  modelMethods.forEach(invocable -> resultList.add(invocable.invoke(exchange, bindingContext)));
  return Mono
      .zip(resultList, objectArray ->
          Arrays.stream(objectArray)
              .map(object -> handleResult(((HandlerResult) object), bindingContext))
              .collect(Collectors.toList()))
      .flatMap(Mono::when);
}

代码示例来源：origin: apache/hbase

public static List<byte[]> getUtf8ByteArrays(List<String> strings) {
 if (CollectionUtils.isEmpty(strings)) {
  return Collections.emptyList();
 }
 List<byte[]> byteArrays = new ArrayList<>(strings.size());
 strings.forEach(s -> byteArrays.add(Bytes.toBytes(s)));
 return byteArrays;
}

代码示例来源：origin: jenkinsci/jenkins

/**
 * In case of duplicate entries, we keep only the last updated element
 */
private void keepLastUpdatedUnique() {
  Map<String, SingleTokenStats> temp = new HashMap<>();
  this.tokenStats.forEach(candidate -> {
    SingleTokenStats current = temp.get(candidate.tokenUuid);
    if (current == null) {
      temp.put(candidate.tokenUuid, candidate);
    } else {
      int comparison = SingleTokenStats.COMP_BY_LAST_USE_THEN_COUNTER.compare(current, candidate);
      if (comparison < 0) {
        // candidate was updated more recently (or has a bigger counter in case of perfectly equivalent dates)
        temp.put(candidate.tokenUuid, candidate);
      }
    }
  });
  
  this.tokenStats = new ArrayList<>(temp.values());
}

代码示例来源：origin: ctripcorp/apollo

private void loadReleaseMessages(long startId) {
 boolean hasMore = true;
 while (hasMore && !Thread.currentThread().isInterrupted()) {
  //current batch is 500
  List<ReleaseMessage> releaseMessages = releaseMessageRepository
    .findFirst500ByIdGreaterThanOrderByIdAsc(startId);
  if (CollectionUtils.isEmpty(releaseMessages)) {
   break;
  }
  releaseMessages.forEach(this::mergeReleaseMessage);
  int scanned = releaseMessages.size();
  startId = releaseMessages.get(scanned - 1).getId();
  hasMore = scanned == 500;
  logger.info("Loaded {} release messages with startId {}", scanned, startId);
 }
}

代码示例来源：origin: galenframework/galen

private Map<String, List<String>> groupBySpecs() {
  Map<String, List<String>> specsMap = new HashMap<>();
  objectSpecs.forEach(object ->
    object.getSpecs().forEach(spec -> {
      List<String> objectsPerSpec = specsMap.get(spec.getStatement());
      if (objectsPerSpec == null) {
        objectsPerSpec = new LinkedList<>();
        specsMap.put(spec.getStatement(), objectsPerSpec);
      }
      if (!objectsPerSpec.contains(object.getObjectName())) {
        objectsPerSpec.add(object.getObjectName());
      }
    })
  );
  return specsMap;
}

代码示例来源：origin: prestodb/presto

for (int i = 0; i < source.getSources().size(); i++) {
    Symbol symbol = context.getSymbolAllocator().newSymbol(translatedExpression, type);
    assignments.put(symbol, translatedExpression);
    projectSymbolMapping.put(entry.getKey(), symbol);
  outputSources.add(new ProjectNode(context.getIdAllocator().getNextId(), source.getSources().get(i), assignments.build()));
  outputLayout.forEach(symbol -> mappings.put(symbol, projectSymbolMapping.get(symbol)));

代码示例来源：origin: apache/incubator-dubbo

public void init() {
  if (!isValid()) {
    return;
  }
  tags.forEach(tag -> {
    tagnameToAddresses.put(tag.getName(), tag.getAddresses());
    tag.getAddresses().forEach(addr -> {
      List<String> tagNames = addressToTagnames.computeIfAbsent(addr, k -> new ArrayList<>());
      tagNames.add(tag.getName());
    });
  });
}

代码示例来源：origin: lettuce-io/lettuce-core

private Voted<RedisCodec<?, ?>> voteForTypeMajority(CommandMethod commandMethod) {
  List<Voted<RedisCodec<?, ?>>> votes = codecs.stream().map(redisCodec -> new Voted<RedisCodec<?, ?>>(redisCodec, 0))
      .collect(Collectors.toList());
  commandMethod.getParameters().getBindableParameters().forEach(parameter -> {
    vote(votes, parameter);
  });
  Collections.sort(votes);
  if (votes.isEmpty()) {
    return null;
  }
  Voted<RedisCodec<?, ?>> voted = votes.get(votes.size() - 1);
  if (voted.votes == 0) {
    return null;
  }
  return voted;
}

代码示例来源：origin: Graylog2/graylog2-server

public List<String> analyze(String toAnalyze, String index, String analyzer) throws IOException {
  final Analyze analyze = new Analyze.Builder().index(index).analyzer(analyzer).text(toAnalyze).build();
  final JestResult result = client.execute(analyze);
  @SuppressWarnings("unchecked")
  final List<Map<String, Object>> tokens = (List<Map<String, Object>>) result.getValue("tokens");
  final List<String> terms = new ArrayList<>(tokens.size());
  tokens.forEach(token -> terms.add((String)token.get("token")));
  return terms;
}

代码示例来源：origin: MovingBlocks/Terasology

@Override
public void update(float delta) {
  if (!isCreated) {
    isCreated = true;
    for (int i = 0; i < buttons.size(); i++) {
      UIButton button = buttons.get(i);
      listeners.add(widget -> currentTab = buttons.indexOf(widget));
      button.subscribe(listeners.get(listeners.size() - 1));
      buttonLayout.addWidget(button, null);
      buttons.set(i, button);
    }
  }
  buttons.forEach(b -> b.setActive(currentTab == buttons.indexOf(b)));
  super.update(delta);
}

代码示例来源：origin: apache/incubator-druid

private static Map<String, AggregatorFactory> getAggregatorsMap(List<AggregatorFactory> aggregatorSpecs)
{
 Map<String, AggregatorFactory> map = new HashMap<>(aggregatorSpecs.size());
 aggregatorSpecs.forEach(v -> map.put(v.getName(), v));
 return map;
}

代码示例来源：origin: lettuce-io/lettuce-core

private <T> Flux<T> pipeliningWithMap(Map<K, V> map, Function<Map<K, V>, Flux<T>> function,
    Function<Flux<T>, Flux<T>> resultFunction) {
  Map<Integer, List<K>> partitioned = SlotHash.partition(codec, map.keySet());
  if (partitioned.size() < 2) {
    return function.apply(map);
  }
  List<Flux<T>> publishers = partitioned.values().stream().map(ks -> {
    Map<K, V> op = new HashMap<>();
    ks.forEach(k -> op.put(k, map.get(k)));
    return function.apply(op);
  }).collect(Collectors.toList());
  return resultFunction.apply(Flux.merge(publishers));
}

代码示例来源：origin: thinkaurelius/titan

@SuppressWarnings("deprecation")
private void initialize() {
  assert !initialized;
  initialized = true;
  assert getReturnType().forProperties() || (orders.isEmpty() && hasContainers.isEmpty());
  if (!starts.hasNext()) throw FastNoSuchElementException.instance();
  List<Traverser.Admin<Element>> elements = new ArrayList<>();
  starts.forEachRemaining(v -> elements.add(v));
  starts.add(elements.iterator());
  assert elements.size() > 0;
  useMultiQuery = useMultiQuery && elements.stream().noneMatch(e -> !(e.get() instanceof Vertex));
  if (useMultiQuery) {
    TitanMultiVertexQuery mquery = TitanTraversalUtil.getTx(traversal).multiQuery();
    elements.forEach(e -> mquery.addVertex((Vertex) e.get()));
    makeQuery(mquery);
    multiQueryResults = mquery.properties();
  }
}

代码示例来源：origin: prestodb/presto

@Override
public void enqueue(int partitionNumber, List<SerializedPage> pages)
{
  requireNonNull(pages, "pages is null");
  // ignore pages after "no more pages" is set
  // this can happen with a limit query
  if (!state.get().canAddPages()) {
    return;
  }
  // reserve memory
  long bytesAdded = pages.stream().mapToLong(SerializedPage::getRetainedSizeInBytes).sum();
  memoryManager.updateMemoryUsage(bytesAdded);
  // update stats
  long rowCount = pages.stream().mapToLong(SerializedPage::getPositionCount).sum();
  totalRowsAdded.addAndGet(rowCount);
  totalPagesAdded.addAndGet(pages.size());
  // create page reference counts with an initial single reference
  List<SerializedPageReference> serializedPageReferences = pages.stream()
      .map(bufferedPage -> new SerializedPageReference(bufferedPage, 1, () -> memoryManager.updateMemoryUsage(-bufferedPage.getRetainedSizeInBytes())))
      .collect(toImmutableList());
  // add pages to the buffer (this will increase the reference count by one)
  partitions.get(partitionNumber).enqueuePages(serializedPageReferences);
  // drop the initial reference
  serializedPageReferences.forEach(SerializedPageReference::dereferencePage);
}

代码示例来源：origin: spring-projects/spring-framework

@Override
  public boolean isValid(Object value, ConstraintValidatorContext context) {
    List<Field> fieldsErros = new ArrayList<>();
    Arrays.asList(value.getClass().getDeclaredFields()).forEach(f -> {
      f.setAccessible(true);
      try {
        if (!f.getName().equals(ID) && f.get(value) == null) {
          fieldsErros.add(f);
          context.buildConstraintViolationWithTemplate(context.getDefaultConstraintMessageTemplate())
              .addPropertyNode(f.getName())
              .addConstraintViolation();
        }
      } catch (IllegalAccessException ex) {
        throw new IllegalStateException(ex);
      }
    });
    return fieldsErros.isEmpty();
  }
}

代码示例来源：origin: prestodb/presto

private JoinGraph replacementGraph(PlanNode oldNode, PlanNode newNode, Context context)
  {
    // TODO optimize when idea is generally approved
    List<Symbol> symbols = context.symbolSources.entrySet().stream()
        .filter(entry -> entry.getValue() == oldNode)
        .map(Map.Entry::getKey)
        .collect(toImmutableList());
    symbols.forEach(symbol -> context.symbolSources.put(symbol, newNode));
    return new JoinGraph(newNode);
  }
}