SortedMapDemo.java Source code

Introduction

Here is the source code for SortedMapDemo.java

Source

// : 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 java.util.Iterator;
import java.util.TreeMap;

public class SortedMapDemo {

    public static void main(String[] args) {
        TreeMap sortedMap = new TreeMap();
        sortedMap.put("Adobe", "Mountain View, CA");
        sortedMap.put("IBM", "White Plains, NY");
        sortedMap.put("Learning Tree", "Los Angeles, CA");
        sortedMap.put("Microsoft", "Redmond, WA");
        sortedMap.put("Netscape", "Mountain View, CA");
        sortedMap.put("O'Reilly", "Sebastopol, CA");
        sortedMap.put("Sun", "Mountain View, CA");
        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));
    }
} ///:~