本文整理了Java中java.util.LinkedHashMap.putIfAbsent()方法的一些代码示例，展示了LinkedHashMap.putIfAbsent()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。LinkedHashMap.putIfAbsent()方法的具体详情如下：
包路径：java.util.LinkedHashMap
类名称：LinkedHashMap
方法名：putIfAbsent

LinkedHashMap.putIfAbsent介绍

暂无

代码示例

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

@Override
@Nullable
public V putIfAbsent(String key, @Nullable V value) {
  String oldKey = this.caseInsensitiveKeys.putIfAbsent(convertKey(key), key);
  if (oldKey != null) {
    return this.targetMap.get(oldKey);
  }
  return this.targetMap.putIfAbsent(key, value);
}

代码示例来源：origin: apache/storm

public synchronized TopologyMetaData get(final Map<String, Object> conf, final String topologyId, final AdvancedFSOps ops,
                     String stormRoot) {
  //Only go off of the topology id for now.
  TopologyMetaData dl = _cache.get(topologyId);
  if (dl == null) {
    _cache.putIfAbsent(topologyId, new TopologyMetaData(conf, topologyId, ops, stormRoot));
    dl = _cache.get(topologyId);
  }
  return dl;
}

代码示例来源：origin: org.springframework/spring-core

@Override
@Nullable
public V putIfAbsent(String key, @Nullable V value) {
  String oldKey = this.caseInsensitiveKeys.putIfAbsent(convertKey(key), key);
  if (oldKey != null) {
    return this.targetMap.get(oldKey);
  }
  return this.targetMap.putIfAbsent(key, value);
}

代码示例来源：origin: prestodb/presto

Symbol symbol = subPlan.translate(item.getSortKey());
orderings.putIfAbsent(symbol, toSortOrder(item));

代码示例来源：origin: com.ca.apim.gateway/gateway-export-plugin

@Override
public synchronized Object putIfAbsent(Object key, Object value) {
  return propertyMap.putIfAbsent(key, value);
}

代码示例来源：origin: org.opencb.biodata/biodata-tools

/**
 * Adds Sample names to the sample name set.
 * Samples names are used to validate the completeness of a variant call.
 * If a sample is not seen in the merged variant, the sample will be added as the registered default value.
 * The default values are retrieved by {@link #getDefaultValue(String)} and set to {@link #DEFAULT_MISSING_GT} for GT_KEY.
 *
 * @param sampleNames Collection of sample names.
 */
public void addExpectedSamples(Collection<String> sampleNames) {
  sampleNames.forEach(sample -> expectedSamplesPosition.putIfAbsent(sample, expectedSamplesPosition.size()));
}

代码示例来源：origin: org.ballerinalang/ballerina-core

/**
 * Create a collection of JSON nodes which has similary key names.
 *
 * @param rootMap Map of key and node list pairs
 * @param key Key of the JSON nodes
 * @param node JSON node to be added
 */
private static void addToRootMap(LinkedHashMap<String, ArrayList<BRefType<?>>> rootMap, String key,
                 BRefType<?> node) {
  rootMap.putIfAbsent(key, new ArrayList<>());
  rootMap.get(key).add(node);
}

代码示例来源：origin: org.apache.hadoop/hadoop-yarn-server-nodemanager

public synchronized void addFpga(String type, List<FpgaDevice> list) {
 availableFpga.putIfAbsent(type, new LinkedList<>());
 for (FpgaDevice device : list) {
  if (!allowedFpgas.contains(device)) {
   allowedFpgas.add(device);
   availableFpga.get(type).add(device);
  }
 }
 LOG.info("Add a list of FPGA Devices: " + list);
}

代码示例来源：origin: HuygensING/timbuctoo

public void addNode(Vertex vertex, String entityTypeName) {
 try {
  nodeIndex.putIfAbsent(new Node(vertex, entityTypeName), nodeIndex.size());
 } catch (IOException e) {
  LOG.error("Node not added because " + e.getMessage());
 }
}

代码示例来源：origin: archerfeel/awacs

public CallElement callSub(CallElement callee) {
  CallElement associated = subElements.putIfAbsent(callee.id(), callee);
  if (associated != null) {
    associated.callCounter++;
    return associated;
  }
  return callee;
}

代码示例来源：origin: freeplane/freeplane

public V computeIfAbsent(K key, Supplier<? extends V> supplier) {
  readLock.lock();
  try {
    V value = cache.get(key);
    if (null != value) {
      return value;
    }
  } finally {
    readLock.unlock();
  }
  V value = supplier.get();
  writeLock.lock();
  try {
    V oldValue = cache.putIfAbsent(key, value);
    return null != oldValue ? oldValue : value;
  } finally {
    writeLock.unlock();
  }
}

代码示例来源：origin: anba/es6draft

void notePrivateName(IdentifierName privateName) {
  String description = privateName.getName();
  if (!privateNames.contains(description)) {
    undeclaredPrivateNames.putIfAbsent(description, privateName);
  }
}

代码示例来源：origin: anba/es6draft

private ClassParseContext restoreClassContext() {
  ClassParseContext current = classParseContext;
  ClassParseContext parent = current.parent;
  // Add all undeclared names to the parent class context.
  LinkedHashMap<String, IdentifierName> undeclaredPrivateNames = current.undeclaredPrivateNames;
  if (!undeclaredPrivateNames.isEmpty()) {
    HashSet<String> declaredNames = current.privateNames;
    LinkedHashMap<String, IdentifierName> parentUndeclaredPrivateNames = parent.undeclaredPrivateNames;
    undeclaredPrivateNames.forEach((n, id) -> {
      if (!declaredNames.contains(n)) {
        parentUndeclaredPrivateNames.putIfAbsent(n, id);
      }
    });
  }
  return classParseContext = parent;
}

代码示例来源：origin: org.apache.servicemix.bundles/org.apache.servicemix.bundles.spring-core

@Override
@Nullable
public V putIfAbsent(String key, @Nullable V value) {
  String oldKey = this.caseInsensitiveKeys.putIfAbsent(convertKey(key), key);
  if (oldKey != null) {
    return this.targetMap.get(oldKey);
  }
  return this.targetMap.putIfAbsent(key, value);
}

代码示例来源：origin: qala-io/datagen

public static void logCurrentSeeds(ExtensionContext context) {
  LinkedHashMap<String, Long> seedStrings = new LinkedHashMap<>();
  while(context != null) {
    Long seed = getCurrentLevelSeedFromStore(context);
    Optional<Method> testMethod = context.getTestMethod();
    Optional<Class<?>> testClass = context.getTestClass();
    if(testMethod.isPresent()) seedStrings.putIfAbsent(testMethod.get().getName(), seed);
    else                       testClass.ifPresent((c)->seedStrings.put(c.getSimpleName(), seed));
    context = context.getParent().isPresent() ? context.getParent().get() : null;
  }
  StringBuilder logLine = new StringBuilder();
  for(Map.Entry<String, Long> seed: seedStrings.entrySet()) {
    logLine.append(" ").append(seed.getKey()).append("[").append(seed.getValue()).append("]");
  }
  if(logLine.length() != 0) LOG.info("Random Seeds: {}", logLine);
}

代码示例来源：origin: SonarSonic/Calculator

public void addInfo(Category category, ItemStack stack, String info, Object... objs) {
  if (stack == null) {
    return;
  }
  try {
    this.info.putIfAbsent(category, new ArrayList<>());
    ItemStack[] stacks = new ItemStack[objs.length];
    int pos = 0;
    for (Object obj : objs) {
      stacks[pos] = ItemStackHelper.getOrCreateStack(obj);
      pos++;
    }
    this.info.get(category).add(new ItemInfo(category, stack, info, stacks));
  } catch (Exception e) {
    e.printStackTrace();
  }
}

代码示例来源：origin: baratine/baratine

private static void getMethods(LinkedHashMap<String,Method> map,
                Class cls,
                boolean isRecursive)
{
 LinkedHashMap<String,Method> currentMap = new LinkedHashMap<String,Method>();
 Method []methods = cls.getDeclaredMethods();
 StringBuilder sb = new StringBuilder();
 for (Method m : methods) {
  int modifiers = m.getModifiers();
  if (Modifier.isStatic(modifiers)) {
  }
  else if (Modifier.isPublic(modifiers)) {
   methodToString(sb, m, false);
   currentMap.put(sb.toString(), m);
   sb.setLength(0);
  }
 }
 for (Map.Entry<String,Method> entry : currentMap.entrySet()) {
  map.putIfAbsent(entry.getKey(), entry.getValue());
 }
 Class parent = cls.getSuperclass();
 if (isRecursive && parent != null && parent != Object.class) {
  getMethods(map, parent, true);
 }
}

代码示例来源：origin: anba/es6draft

map.putIfAbsent(code, minor);

代码示例来源：origin: kiegroup/appformer

@Override
public Supplier<JGitFileSystem> putIfAbsent(String key, Supplier<JGitFileSystem> value) {
  Supplier<JGitFileSystem> jGitFileSystemSupplier = super.putIfAbsent(key, value);
  if (size() > config.getJgitFileSystemsInstancesCache()) {
    fitListToCacheSize();
  }
  return jGitFileSystemSupplier;
}

代码示例来源：origin: org.ballerinalang/ballerina-core

rootMap.putIfAbsent(key, new ArrayList<>());
rootMap.get(key).add(element);