What is the SortedSet.tailSet() function in Java?
The SortedSet.tailSet() method is present in the SortedSet interface inside the java.util package. SortedSet.tailSet() is used to return the elements after a given limit, including the limit, i.e., elements greater or equal than the given limit.
Let’s understand with the help of an example. Suppose that a SortedSet contains [1, 3, 5, 8, 9, 12, 15, 23, 25] and the limit is . The tailset for this sorted set will be 12, 15, 23, 25. Therefore, the result of the SortedSet.tailSet() method is 12, 15, 23, 25.
Syntax
SortedSet.tailSet(limit_element)
Parameters
limit_element: The limit from whichSortedSetis allowed to return a value, including the limit itself.
Return value
The SortedSet.tailSet() method returns the elements of the SortedSet from the limit, including the limit_element, in a sorted manner.
Code
Let’s have a look at the code now.
import java.io.*;import java.util.SortedSet;import java.util.TreeSet;class Main{public static void main(String args[]){SortedSet<Integer> set = new TreeSet<Integer>();set.add(1);set.add(8);set.add(5);set.add(3);set.add(0);set.add(22);set.add(10);System.out.println("SortedSet: " + set);System.out.print("The resultant elements of the tailset are: "+set.tailSet(10));}}
Explanation
-
From lines 1 to 3, we import the required packages and classes.
-
In line 4, we make a
Mainclass. -
In line 6, we make a
main()function. -
In line 8, we create a
TreeSetofIntegertype. TheSortedSetis actually only inherited fromTreeSet. AsSortedSetis an interface, we cannot instantiate an object of it. -
From lines 10 to 16, we use the
SortedSet.add()method to add the elements into theSortedSet. -
In line 17, we display the original
SortedSetwith a message. -
In line 19, we display the
tailsetof theSortedSetwith the message.
So, this is how to use the TreeSet.tailSet() method in Java.
