How to use

removeIf

method

in

java.util.Collection

/**
 * Removes all mappings from this map whose values are zero.
 *
 * <p>This method is not atomic: the map may be visible in intermediate states, where some of the
 * zero values have been removed and others have not.
 */
public void removeAllZeros() {
 map.values().removeIf(x -> x == 0);
}

@Override
public boolean removeIf(java.util.function.Predicate<? super T> filter) {
 checkNotNull(filter);
 return fromCollection.removeIf(element -> filter.test(function.apply(element)));
}

@Override
public boolean removeIf(java.util.function.Predicate<? super E> filter) {
 checkNotNull(filter);
 return unfiltered.removeIf(element -> predicate.apply(element) && filter.test(element));
}

/**
 * Removes all mappings from this map whose values are zero.
 *
 * <p>This method is not atomic: the map may be visible in intermediate states, where some of the
 * zero values have been removed and others have not.
 */
public void removeAllZeros() {
 map.values().removeIf(x -> x == 0);
}

@Override
public boolean removeIf(Predicate<? super E> filter) {
 synchronized (mutex) {
  return delegate().removeIf(filter);
 }
}

void cancelAllJobs()
{
  registry.values().removeIf( future ->
  {
    future.cancel( true );
    return true;
  } );
}

@Override
public boolean removeIf(Predicate<? super E> filter) {
 synchronized (mutex) {
  return delegate().removeIf(filter);
 }
}

public boolean removeIf(Predicate<? super Map.Entry<HeaderName, String>> filter) {
  return delegate.entries().removeIf(filter);
}

@Override
public boolean removeIf(java.util.function.Predicate<? super E> filter) {
 checkNotNull(filter);
 return unfiltered.removeIf(element -> predicate.apply(element) && filter.test(element));
}

@Override
public boolean removeIf(java.util.function.Predicate<? super T> filter) {
 checkNotNull(filter);
 return fromCollection.removeIf(element -> filter.test(function.apply(element)));
}

/**
 * Removes, from an iterable, every element that satisfies the provided predicate.
 *
 * <p>Removals may or may not happen immediately as each element is tested against the predicate.
 * The behavior of this method is not specified if {@code predicate} is dependent on {@code
 * removeFrom}.
 *
 * <p><b>Java 8 users:</b> if {@code removeFrom} is a {@link Collection}, use {@code
 * removeFrom.removeIf(predicate)} instead.
 *
 * @param removeFrom the iterable to (potentially) remove elements from
 * @param predicate a predicate that determines whether an element should be removed
 * @return {@code true} if any elements were removed from the iterable
 * @throws UnsupportedOperationException if the iterable does not support {@code remove()}.
 * @since 2.0
 */
@CanIgnoreReturnValue
public static <T> boolean removeIf(Iterable<T> removeFrom, Predicate<? super T> predicate) {
 if (removeFrom instanceof Collection) {
  return ((Collection<T>) removeFrom).removeIf(predicate);
 }
 return Iterators.removeIf(removeFrom.iterator(), predicate);
}

@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
public void testRemoveIf_alwaysFalse() {
 assertFalse("removeIf(x -> false) should return false", collection.removeIf(x -> false));
 expectUnchanged();
}

@CollectionFeature.Require(absent = SUPPORTS_REMOVE)
@CollectionSize.Require(ZERO)
public void testRemoveIf_unsupportedEmptyCollection() {
 try {
  assertFalse(
    "removeIf(Predicate) should return false or throw " + "UnsupportedOperationException",
    collection.removeIf(
      x -> {
       throw new AssertionError("predicate should never be called");
      }));
 } catch (UnsupportedOperationException tolerated) {
 }
 expectUnchanged();
}

@CollectionFeature.Require({SUPPORTS_ITERATOR_REMOVE, FAILS_FAST_ON_CONCURRENT_MODIFICATION})
@CollectionSize.Require(SEVERAL)
public void testRemoveIfSomeMatchesConcurrentWithIteration() {
 try {
  Iterator<E> iterator = collection.iterator();
  assertTrue(collection.removeIf(Predicate.isEqual(samples.e0())));
  iterator.next();
  fail("Expected ConcurrentModificationException");
 } catch (ConcurrentModificationException expected) {
  // success
 }
}

@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
@CollectionSize.Require(absent = ZERO)
public void testRemoveIf_allPresent() {
 assertTrue("removeIf(x -> true) should return true", collection.removeIf(x -> true));
 expectContents();
}

 @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
 @CollectionSize.Require(absent = ZERO)
 public void testRemoveIf_alwaysTrueUnsupported() {
  try {
   collection.removeIf(x -> true);
   fail("removeIf(x -> true) should throw " + "UnsupportedOperationException");
  } catch (UnsupportedOperationException expected) {
  }
  expectUnchanged();
  assertTrue(collection.contains(samples.e0()));
 }
}

protected void processConfigurationClass(ConfigurationClass configClass) throws IOException {
  if (this.conditionEvaluator.shouldSkip(configClass.getMetadata(), ConfigurationPhase.PARSE_CONFIGURATION)) {
    return;
  }
  ConfigurationClass existingClass = this.configurationClasses.get(configClass);
  if (existingClass != null) {
    if (configClass.isImported()) {
      if (existingClass.isImported()) {
        existingClass.mergeImportedBy(configClass);
      }
      // Otherwise ignore new imported config class; existing non-imported class overrides it.
      return;
    }
    else {
      // Explicit bean definition found, probably replacing an import.
      // Let's remove the old one and go with the new one.
      this.configurationClasses.remove(configClass);
      this.knownSuperclasses.values().removeIf(configClass::equals);
    }
  }
  // Recursively process the configuration class and its superclass hierarchy.
  SourceClass sourceClass = asSourceClass(configClass);
  do {
    sourceClass = doProcessConfigurationClass(configClass, sourceClass);
  }
  while (sourceClass != null);
  this.configurationClasses.put(configClass, configClass);
}

public boolean removeIf(Predicate<? super Map.Entry<HeaderName, String>> filter) {
  return delegate.entries().removeIf(filter);
}

@CacheSpec
@CheckNoStats
@Test(dataProvider = "caches", expectedExceptions = NullPointerException.class)
public void values_removeIf_null(Map<Integer, Integer> map, CacheContext context) {
 map.values().removeIf(null);
}

@CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
@CollectionSize.Require(absent = ZERO)
public void testRemoveIf_sometimesTrue() {
 assertTrue(
   "removeIf(isEqual(present)) should return true",
   collection.removeIf(Predicate.isEqual(samples.e0())));
 expectMissing(samples.e0());
}