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

Objects.nonNull介绍

[英]Returns true if the provided reference is non- nullotherwise returns false.
[中]如果提供的引用为非null，则返回true，否则返回false。

代码示例

代码示例来源：origin: apache/flume

private void parseList(String value, Set<String> set) {
  if (Objects.nonNull(value)) {
   set.addAll(Arrays.asList(value.split(" ")));
  }
 }
}

代码示例来源：origin: apache/flume

private void parseList(String value, Set<String> set) {
  if (Objects.nonNull(value)) {
   set.addAll(Arrays.asList(value.split(" ")));
  }
 }
}

代码示例来源：origin: hs-web/hsweb-framework

public static DatabaseType fromJdbcUrl(String url) {
    if (Objects.nonNull(url)) {
      return Arrays.stream(values()).filter(type -> type.urlPredicate.test(url)).findFirst().orElse(unknown);
    }
    return unknown;
  }
}

代码示例来源：origin: SonarSource/sonarqube

private void validatePullRequestParamsWhenPluginAbsent(List<String> validationMessages) {
 Stream.of(PULL_REQUEST_KEY, PULL_REQUEST_BRANCH, PULL_REQUEST_BASE)
  .filter(param -> nonNull(settings.get(param).orElse(null)))
  .forEach(param -> validationMessages.add(format("To use the property \"%s\", the branch plugin is required but not installed. "
   + "See the documentation of branch support: %s.", param, BRANCHES_DOC_LINK)));
}

代码示例来源：origin: apache/storm

/**
 * Retrieve the set of alive worker IDs.
 *
 * @param nowSecs current time in seconds
 */
public Set<String> getAliveIds(int nowSecs) {
  return SupervisorUtils.readWorkerHeartbeats(stormConf).entrySet().stream()
      .filter(entry -> Objects.nonNull(entry.getValue())
          && !SupervisorUtils.isWorkerHbTimedOut(nowSecs, entry.getValue(), stormConf))
      .map(Map.Entry::getKey)
      .collect(toCollection(TreeSet::new));
}

代码示例来源：origin: wildfly/wildfly

public String printLocks() {
  return table.values().stream().map(Map::values).flatMap(Collection::stream)
   .filter(cl -> cl.isHeld() && Objects.nonNull(cl.name))
   .map(cl -> cl.name).collect(Collectors.joining(", "));
}

代码示例来源：origin: codingapi/tx-lcn

@Override
public void stopDelayChecking(String groupId, String unitId) {
  ScheduledFuture scheduledFuture = delayTasks.get(groupId + unitId);
  if (Objects.nonNull(scheduledFuture)) {
    txLogger.trace(groupId, unitId, Transactions.TAG_TASK, "stop delay checking task");
    log.debug("cancel {}:{} checking.", groupId, unitId);
    scheduledFuture.cancel(true);
  }
}

代码示例来源：origin: ctripcorp/apollo

private boolean isValidItem(ItemDTO item) {
 return Objects.nonNull(item) && !StringUtils.isContainEmpty(item.getKey());
}

代码示例来源：origin: MovingBlocks/Terasology

private Set<Module> getAllModuleDependencies(final Collection<Module> modules) {
  return modules.stream()
      .filter(Objects::nonNull)
      .map(Module::getMetadata)
      .map(ModuleMetadata::getDependencies)
      .flatMap(Collection::stream)
      .filter(dep -> Objects.nonNull(dep.getId()))
      .map(dep -> moduleManager.getRegistry().getLatestModuleVersion(dep.getId()))
      .filter(Objects::nonNull)
      .collect(Collectors.toSet());
}

代码示例来源：origin: pentaho/pentaho-kettle

public TabMapEntry findTabMapEntry( Object managedObject ) {
 if ( managedObject == null ) {
  return null;
 }
 return tabMap.stream()
  .filter( tabMapEntry -> !tabMapEntry.getTabItem().isDisposed() )
  .filter( tabMapEntry -> Objects.nonNull( tabMapEntry.getObject().getManagedObject() ) )
  // make sure they are the same class before comparing them
  .filter( tabMapEntry -> tabMapEntry.getObject().getManagedObject().getClass().equals( managedObject.getClass() ) )
  .filter( tabMapEntry -> tabMapEntry.getObject().getManagedObject().equals( managedObject ) )
  .findFirst().orElse( null );
}

代码示例来源：origin: codingapi/tx-lcn

public void await() {
  if (Objects.nonNull(rpcContent.getRes())) {
    return;
  }
  rpcContent.await();
}

代码示例来源：origin: pentaho/pentaho-kettle

private boolean sameId( RemoteSource source1, RemoteSource source2 ) {
 return ( Objects.isNull( source1.getId() ) && Objects.isNull( source2.getId() ) )
  || ( Objects.nonNull( source1.getId() ) && source1.getId().equals( source2.getId() ) );
}

代码示例来源：origin: ctripcorp/apollo

@Transactional
 public void deleteApp(App app, String operator) {
  String appId = app.getAppId();

  logger.info("{} is deleting App:{}", operator, appId);

  List<Cluster> managedClusters = clusterService.findClusters(appId);

  // 1. delete clusters
  if (Objects.nonNull(managedClusters)) {
   for (Cluster cluster : managedClusters) {
    clusterService.delete(cluster.getId(), operator);
   }
  }

  // 2. delete appNamespace
  appNamespaceService.batchDelete(appId, operator);

  // 3. delete app
  appService.delete(app.getId(), operator);
 }
}

代码示例来源：origin: baomidou/mybatis-plus

/**
 * 根据实体FieldStrategy属性来决定判断逻辑
 */
private boolean fieldStrategyMatch(T entity, TableFieldInfo e) {
  switch (e.getFieldStrategy()) {
    case NOT_NULL:
      return Objects.nonNull(ReflectionKit.getMethodValue(entity, e.getProperty()));
    case IGNORED:
      return true;
    case NOT_EMPTY:
      return StringUtils.checkValNotNull(ReflectionKit.getMethodValue(entity, e.getProperty()));
    default:
      return Objects.nonNull(ReflectionKit.getMethodValue(entity, e.getProperty()));
  }
}

代码示例来源：origin: codingapi/tx-lcn

@Override
public void add(String token) {
  Objects.requireNonNull(token);
  Long size = redisTemplate.opsForList().size(REDIS_PREFIX);
  redisTemplate.opsForList().leftPush(REDIS_PREFIX, token);
  redisTemplate.expire(REDIS_PREFIX, 20, TimeUnit.MINUTES);
  if (Objects.nonNull(size) && size > 3) {
    redisTemplate.opsForList().rightPop(REDIS_PREFIX);
  }
}

代码示例来源：origin: baomidou/mybatis-plus

@Override
public String getCustomSqlSegment() {
  MergeSegments expression = getExpression();
  if (Objects.nonNull(expression)) {
    NormalSegmentList normal = expression.getNormal();
    String sqlSegment = getSqlSegment();
    if (StringUtils.isNotEmpty(sqlSegment)) {
      if (normal.isEmpty()) {
        return sqlSegment;
      } else {
        return concatWhere(sqlSegment);
      }
    }
  }
  return StringUtils.EMPTY;
}

代码示例来源：origin: apache/ignite

/**
 * Common Assertion
 * @param h2it target iterator
 */
private void checkIterator(H2ResultSetIterator h2it){
  if (Objects.nonNull(h2it))
    assertNull(GridTestUtils.getFieldValue(h2it, H2ResultSetIterator.class, "data"));
  else
    fail();
}

代码示例来源：origin: yu199195/hmily

@SuppressWarnings("unchecked")
private void executeParticipantMethod(final HmilyInvocation hmilyInvocation) throws Exception {
  if (Objects.nonNull(hmilyInvocation)) {
    final Class clazz = hmilyInvocation.getTargetClass();
    final String method = hmilyInvocation.getMethodName();
    final Object[] args = hmilyInvocation.getArgs();
    final Class[] parameterTypes = hmilyInvocation.getParameterTypes();
    final Object bean = SpringBeanUtils.getInstance().getBean(clazz);
    MethodUtils.invokeMethod(bean, method, args, parameterTypes);
  }
}

代码示例来源：origin: codingapi/tx-lcn

@Override
  public void postBusinessCode(TxTransactionInfo info) {
    RollbackInfo rollbackInfo = (RollbackInfo) DTXLocal.cur().getAttachment();
    int state = DTXLocal.transactionState();

    // 非成功状态。（事务导致）{#link TxcServiceImpl.lockResource}
    if (Objects.nonNull(rollbackInfo) && rollbackInfo.getStatus() < 0) {
      state = -1;
    }

    // 关闭事务组
    transactionControlTemplate.notifyGroup(info.getGroupId(), info.getUnitId(), info.getTransactionType(), state);
  }
}

代码示例来源：origin: yu199195/hmily

@Override
public void apply(final RequestTemplate requestTemplate) {
  final HmilyTransactionContext hmilyTransactionContext = HmilyTransactionContextLocal.getInstance().get();
  if (Objects.nonNull(hmilyTransactionContext)) {
    if (hmilyTransactionContext.getRole() == HmilyRoleEnum.LOCAL.getCode()) {
      hmilyTransactionContext.setRole(HmilyRoleEnum.INLINE.getCode());
    }
  }
  requestTemplate.header(CommonConstant.HMILY_TRANSACTION_CONTEXT, GsonUtils.getInstance().toJson(hmilyTransactionContext));
}