Java Collections unmodifiableNavigableSet​() Method with Examples

In this article we will discuss about unmodifiableNavigableSet() method.

Introduction

This method is available in NavigableSet. It is an data structure that can store elements in an order. For this we have to use tree set.

we can create a treeset by using the following syntax:

 NavigableSet<datatype> data = new TreeSet<String>(); 

where,

1. datatype specifies the type of elements
2. data is the input data.

unmodifiableNavigableSet()

This method will return the unmodifiable view of the given Navigable set.

Syntax:

public static <T> NavigableSet<T> unmodifiableSortedSet(SortedSet<T> data) 

where, data is the Navigable set which is returned in an unmodifiable view.

Example1 :

• demonstration before and after modification

Output:

[1, 2, 3, 34]
[1, 2, 3, 32, 34]

Example 2

Output:

[Python, R, java, sql]
[Python, R, bigdata/iot, java, sql]