Collections.SynchronizedNavigableSet(INavigableSet) Method

Definition

Namespace:

Java.Util

Assembly:

Mono.Android.dll

Returns a synchronized (thread-safe) navigable set backed by the specified navigable set.

C#

[Android.Runtime.Register("synchronizedNavigableSet", "(Ljava/util/NavigableSet;)Ljava/util/NavigableSet;", "", ApiSince=26)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T" })]
public static Java.Util.INavigableSet SynchronizedNavigableSet (Java.Util.INavigableSet s);

Parameters

s

INavigableSet

the navigable set to be "wrapped" in a synchronized navigable set

Returns

INavigableSet

a synchronized view of the specified navigable set

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a synchronized (thread-safe) navigable set backed by the specified navigable set. In order to guarantee serial access, it is critical that <strong>all</strong> access to the backing navigable set is accomplished through the returned navigable set (or its views).

It is imperative that the user manually synchronize on the returned navigable set when traversing it, or any of its subSet, headSet, or tailSet views, via Iterator, Spliterator or Stream:

text/java

NavigableSet s = Collections.synchronizedNavigableSet(new TreeSet());
                 ...
             synchronized (s) {
                 Iterator i = s.iterator(); // Must be in the synchronized block
                 while (i.hasNext())
                     foo(i.next());
             }

or:

text/java

NavigableSet s = Collections.synchronizedNavigableSet(new TreeSet());
             NavigableSet s2 = s.headSet(foo, true);
                 ...
             synchronized (s) {  // Note: s, not s2!!!
                 Iterator i = s2.iterator(); // Must be in the synchronized block
                 while (i.hasNext())
                     foo(i.next());
             }

Failure to follow this advice may result in non-deterministic behavior.

The returned navigable set will be serializable if the specified navigable set is serializable.

Added in 1.8.

Java documentation for java.util.Collections.synchronizedNavigableSet(java.util.NavigableSet<T>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to