Java Collections synchronizedNavigableSet() Method with Examples

by Online Tutorials Library July 22, 2022

Java Collections synchronizedNavigableSet() Method

The synchronizedNavigableSet() method of Java Collections class is used to get a synchronized (thread-safe) navigable set backed by the specified navigable set.

Syntax

Following is the declaration of synchronizedNavigableSet() method:

Parameter

Parameter	Description	Required/Optional
s	It is the navigable set which will be wrapped in a synchronized navigable set.	Required

Returns

The synchronizedNavigableSet() method returns a synchronized view of the specified Navigable Set.

Exceptions

Compatibility Version

Java 1.8 and above

Example 1

  import java.util.*;  public class CollectionsSynchronizedNavigableSetExample1 {  public static void main(String[] args) {  NavigableSet set = new TreeSet<>();  set.add(“Instagram”);  set.add(“TutorAspire”);  set.add(“Facebook”);  set.add(“Google”);  Set synset = Collections.synchronizedNavigableSet(set);  System.out.println(“Synchronized navigable set is :” + synset);                    }  }  

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Output:

Synchronized navigable set is :[Facebook, Google, Instagram, TutorAspire ]

Example 2

  import java.util.*;  public class CollectionsSynchronizedNavigableSetExample2 {  public static void main(String[] args) {  NavigableSet set = new TreeSet<>();  set.add(1001);  set.add(1002);  set.add(1003);  set.add(1004);  set.add(1005);  System.out.println(“Set before Synchronized navigable set: ” + set);  Set synset = Collections.synchronizedNavigableSet(set);       set.remove(1004);       System.out.println(“Synchronized navigable set after remove(1004):” + synset);       }  }  

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Output:

Set before Synchronized navigable set: [1001, 1002, 1003, 1004, 1005]  Synchronized navigable set after remove(1004):[1001, 1002, 1003, 1005]

Example 3

  import java.util.*;  import java.util.concurrent.ExecutorService;  import java.util.concurrent.Executors;  import java.util.concurrent.TimeUnit;  import java.util.concurrent.atomic.AtomicInteger;  public class CollectionsSynchronizedNavigableSetExample3 {      private static AtomicInteger atomicInteger = new AtomicInteger(0);      public static void main(String[] args) throws InterruptedException {          NavigableSet s = new TreeSet<>();          NavigableSet theSet = Collections.synchronizedNavigableSet(s);          final ExecutorService e = Executors.newFixedThreadPool(1000);          for (int i = 1; i <= 1000; i++) {              e.execute(() -> {                  int n = atomicInteger.incrementAndGet();                  try {                      theSet.add(n);                  } catch (Exception e1) {                      System.out.println(e1 + ” ” + n);                  }              });          }          e.shutdown();          e.awaitTermination(1000, TimeUnit.SECONDS);          System.out.println(theSet.size());//should be 1000      }  }  

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Output:

Example 4

  import java.util.*;  public class CollectionsSynchronizedNavigableSetExample4 {  public static void main(String[] args) {  NavigableSet set = new TreeSet<>();  set.add(1001);  set.add(1002);  set.add(1003);  set.add(1004);  set.add(1005);  System.out.println(“Set before Synchronized navigable set: ” + set);  Collections.synchronizedNavigableSet(set);  Iterator itr=set.iterator();  System.out.println(“Set after Synchronized navigable set-“);  while(itr.hasNext()){    System.out.println(itr.next());     }                 }  }  

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Output:

Set before Synchronized navigable set: [1001, 1002, 1003, 1004, 1005]  Set after Synchronized navigable set-  1001  1002  1003  1004  1005

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Java Collections synchronizedNavigableSet() Method with Examples

Java Collections synchronizedNavigableSet() Method

Syntax

Parameter

Returns

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

Example 4

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