E
pollLast()
Retrieves
and removes the highest element, or returns null if this set is
empty.
import java.util.*; class NavigableSetPollLast{ public static void main(String args[]){ NavigableSet<Integer> mySet1 = new TreeSet<> (); /* Add Elements too mySet1 */ for(int i=10; i>0; i-=2){ mySet1.add(i); } System.out.println("Elements in mySet1 are"); System.out.println(mySet1+"\n"); for(int i=0; i < 6; i++){ System.out.println("\nCalling pollLast"); System.out.println("pollLast removes " +mySet1.pollLast()); System.out.println("Elements in mySet1 are"); System.out.println(mySet1); } } }
Output
Elements in mySet1 are [2, 4, 6, 8, 10] Calling pollLast pollLast removes 10 Elements in mySet1 are [2, 4, 6, 8] Calling pollLast pollLast removes 8 Elements in mySet1 are [2, 4, 6] Calling pollLast pollLast removes 6 Elements in mySet1 are [2, 4] Calling pollLast pollLast removes 4 Elements in mySet1 are [2] Calling pollLast pollLast removes 2 Elements in mySet1 are [] Calling pollLast pollLast removes null Elements in mySet1 are []
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