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Collections synchronizedSortedSet() method in Java with Examples

  • Last Updated : 08 Oct, 2018

The synchronizedSortedSet() method of java.util.Collections class is used to return a synchronized (thread-safe) sorted set backed by the specified sorted set. In order to guarantee serial access, it is critical that all access to the backing sorted set is accomplished through the returned sorted set (or its views).

Syntax:

public static <T> SortedSet<T>
  synchronizedSortedSet(SortedSet<T> s)

Parameters: This method takes the sorted set as a parameter to be “wrapped” in a synchronized sorted set.

Return Value: This method returns a synchronized view of the specified sorted set.

Below are the examples to illustrate the synchronizedSortedSet() method

Example 1:




// Java program to demonstrate
// synchronizedSortedSet() method
// for <String> Value
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
  
        try {
  
            // creating object of SortedSet<String>
            SortedSet<String> set = new TreeSet<String>();
  
            // populate the set
            set.add("A");
            set.add("B");
            set.add("C");
            set.add("D");
  
            // printing the Collection
            System.out.println("Sorted Set : " + set);
  
            // create a synchronized sorted set
            SortedSet<String>
                sorset = Collections
                             .synchronizedSortedSet(set);
  
            // printing the set
            System.out.println("Sorted set is : "
                               + sorset);
        }
  
        catch (IllegalArgumentException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}
Output:
Sorted Set : [A, B, C, D]
Sorted set is : [A, B, C, D]

Example 2:




// Java program to demonstrate
// synchronizedSortedSet() method
// for <Integer> Value
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
  
        try {
  
            // creating object of SortedSet<String>
            SortedSet<Integer>
                set = new TreeSet<Integer>();
  
            // populate the set
            set.add(10);
            set.add(20);
            set.add(30);
            set.add(40);
  
            // printing the Collection
            System.out.println("Sorted Set : " + set);
  
            // create a synchronized sorted set
            SortedSet<Integer>
                sorset = Collections
                             .synchronizedSortedSet(set);
  
            // printing the set
            System.out.println("Sorted set is : "
                               + sorset);
        }
  
        catch (IllegalArgumentException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}
Output:
Sorted Set : [10, 20, 30, 40]
Sorted set is : [10, 20, 30, 40]

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