Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.TreeMap;

public class Main {
    public static void main(String[] a) {

        TreeMap map = new TreeMap();
        map.put("key1", "value1");
        map.put("key2", "value2");
        map.put("key3", "value3");

        if (!map.isEmpty()) {
            Object last = map.lastKey();
            boolean first = true;
            do {
                if (!first) {
                    System.out.print(", ");
                }
                System.out.print(last);
                last = map.headMap(last).lastKey();
                first = false;
            } while (last != map.firstKey());
            System.out.println();
        }
    }
}