java.util.Collections.unmodifiableSortedSet() Method


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Description

The unmodifiableSortedSet() method is used get an unmodifiable view of the specified sorted set.

Declaration

Following is the declaration for java.util.Collections.unmodifiableSortedSet() method.

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

Parameters

  • s -- This is the sorted set for which an unmodifiable view is to be returned.

Return Value

The method call returns an unmodifiable view of the specified sorted set.

Exception

  • NA

Example

The following example shows the usage of java.util.Collections.unmodifiableSortedSet()

package com.tutorialspoint;

import java.util.*;

public class CollectionsDemo {
   public static void main(String[] s) {
   // create sorted set
   SortedSet<String> set = new TreeSet<String>();
      
   // populate the set
   set.add("Welcome");
   set.add("to");
   set.add("TP");
      
   System.out.println("Initial set value: "+set);
      
   // create unmodifiable sorted set
   Set unmodsortset = Collections.unmodifiableSortedSet(set);

   // try to modify the sorted set
   unmodsortset.add("Hello");
   }
}

Let us compile and run the above program, this will produce the following result.

Initial set value: [TP, Welcome, to]
Exception in thread "main" java.lang.UnsupportedOperationException

java_util_collections.htm

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