The unmodifiableSortedSet() method of Java Collections is available in TreeSet. A Tree Set is a data structure that can store elements in order.
Syntax:
SortedSet<datatype> data = new TreeSet<String>();
where,
- datatype specifies the type of elements
- data is the input data.
unmodifiableSortedSet() Method
The unmodifiableSortedSet() method of the Java Collections class is used to get an unmodifiable view of the specified sorted set.
Syntax:
public static <T> SortedSet<T> unmodifiableSortedSet(SortedSet<T> data)
where data is the sorted set that is returned in an unmodifiable view.
Return type: This method returns an unmodifiable view of the specified Sorted Set.
Example 1:
Demonstration before and after modification
Java
import java.util.*; public class GFG1 { // main method public static void main(String[] args) { // create a set named data SortedSet<String> data = new TreeSet<String>(); // Add values in the data data.add("java"); data.add("Python"); data.add("R"); data.add("sql"); // Create a Unmodifiable sorted set SortedSet<String> data2 = Collections.unmodifiableSortedSet(data); // display System.out.println(data); // add to data data.add("bigdata/iot"); // display System.out.println(data2); }} |
Output
[Python, R, java, sql] [Python, R, bigdata/iot, java, sql]
Example 2:
Java
import java.util.*; public class GFG1 { // main method public static void main(String[] args) { // create a set named data SortedSet<Integer> data = new TreeSet<Integer>(); // Add values in the data data.add(1); data.add(2); data.add(3); data.add(34); // Create a Unmodifiable sorted set SortedSet<Integer> data2 = Collections.unmodifiableSortedSet(data); // display System.out.println(data); // add to data data.add(32); // display System.out.println(data2); }} |
Output
[1, 2, 3, 34] [1, 2, 3, 32, 34]
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