The first and last element in this TreeSet
E first()- Returns the first (lowest) element currently in this set.
E last()- Returns the last (highest) element currently in this set.
import java.util.Arrays;
import java.util.TreeSet;
public class Main {
public static void main(String args[]) throws Exception {
String elements[] = { "java2s.com", "C", "D", "G", "F" };
TreeSet<String> set = new TreeSet<String>(Arrays.asList(elements));
System.out.println(set);
System.out.println(set.first());
System.out.println(set.last());
}
}
The output:
[C, D, F, G, java2s.com]
C
java2s.com