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Java Collections unmodifiableNavigableSet() Method

The unmodifiableNavigableSet() method of Java Collections class is used to get an unmodifiable view of the specified navigable set.

Syntax

Following is the declaration of unmodifiableNavigableSet() method:

Parameter

Parameter Description Required/Optional
s It is the navigable set for which an unmodifiable view is to be returned. Required

Returns

The unmodifiableNavigableSet() method returns an unmodifiable view of the specified navigable set.

Exceptions

NA

Compatibility Version

Java 1.8 and above

Example 1

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Output:

Initial Set: [1, 2, 3, 4, 5]
Unmodifiable Navigable Set: [1, 2, 3, 4, 5]
Unmodifiable Navigable Set: [1, 2, 3, 4, 5, 15]

Example 2

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Output:

Initial Set: [Facebook, Google, Instagram]
Unmodifiable Navigable Set: [Facebook, Google, Instagram]
Unmodifiable Navigable Set: [Facebook, Google, Instagram, Twitter]

Example 3

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Output:

Original Set: [11, 13, 17]
Exception in thread "main" java.lang.UnsupportedOperationException
	at java.base/java.util.Collections$UnmodifiableCollection.add(Collections.java:1056)
	at myPackage.CollectionsUnmodifiableNavigableSetExample3.main(CollectionsUnmodifiableNavigableSetExample3.java:9)





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