TComp.java Source code

Introduction

Here is the source code for TComp.java

Source

import java.util.Comparator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

class TComp implements Comparator<String> {
    public int compare(String a, String b) {
        int i, j, k;
        String aStr, bStr;

        aStr = a;
        bStr = b;

        i = aStr.lastIndexOf(' ');
        j = bStr.lastIndexOf(' ');

        k = aStr.substring(i).compareTo(bStr.substring(j));
        if (k == 0) // last names match, check entire name
            return aStr.compareTo(bStr);
        else
            return k;
    }

}

class TreeMapDemo2 {
    public static void main(String args[]) {
        TreeMap<String, Double> tm = new TreeMap<String, Double>(new TComp());

        tm.put("J D", new Double(3434.34));
        tm.put("T S", new Double(123.22));
        tm.put("J B", new Double(1378.00));
        tm.put("T H", new Double(99.22));
        tm.put("R S", new Double(-19.08));

        Set<Map.Entry<String, Double>> set = tm.entrySet();

        for (Map.Entry<String, Double> me : set) {
            System.out.print(me.getKey() + ": ");
            System.out.println(me.getValue());
        }
        System.out.println();

        double balance = tm.get("A");
        tm.put("A", balance + 1000);

        System.out.println("A's new balance: " + tm.get("A"));
    }
}