//: c11:SortedMapDemo.java // What you can do with a TreeMap. // From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002 // www.BruceEckel.com. See copyright notice in CopyRight.txt. import com.bruceeckel.simpletest.*; import com.bruceeckel.util.*; import java.util.*; public class SortedMapDemo { private static Test monitor = new Test(); public static void main(String[] args) { TreeMap sortedMap = new TreeMap(); Collections2.fill( sortedMap, SimplePairGenerator.gen, 10); System.out.println(sortedMap); Object low = sortedMap.firstKey(), high = sortedMap.lastKey(); System.out.println(low); System.out.println(high); Iterator it = sortedMap.keySet().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(sortedMap.subMap(low, high)); System.out.println(sortedMap.headMap(high)); System.out.println(sortedMap.tailMap(low)); monitor.expect(new String[] { "{eight=H, five=E, four=D, nine=I, one=A, seven=G," + " six=F, ten=J, three=C, two=B}", "eight", "two", "nine", "ten", "{nine=I, one=A, seven=G, six=F}", "{eight=H, five=E, four=D, nine=I, " + "one=A, seven=G, six=F}", "{nine=I, one=A, seven=G, six=F, " + "ten=J, three=C, two=B}" }); } } ///:~