Java tutorial
// : c11:SortedSetDemo.java // What you can do with a TreeSet. // From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002 // www.BruceEckel.com. See copyright notice in CopyRight.txt. import java.util.Arrays; import java.util.Iterator; import java.util.SortedSet; import java.util.TreeSet; public class SortedSetDemo { public static void main(String[] args) { SortedSet sortedSet = new TreeSet(Arrays.asList("one two three four five six seven eight".split(" "))); System.out.println(sortedSet); Object low = sortedSet.first(), high = sortedSet.last(); System.out.println(low); System.out.println(high); Iterator it = sortedSet.iterator(); for (int i = 0; i <= 6; i++) { if (i == 3) low = it.next(); if (i == 6) high = it.next(); else it.next(); } System.out.println(low); System.out.println(high); System.out.println(sortedSet.subSet(low, high)); System.out.println(sortedSet.headSet(high)); System.out.println(sortedSet.tailSet(low)); } } ///:~