Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

public class Main {

    public static void main(String[] args) {
        HashMap<String, String> hm = new HashMap<String, String>();
        hm.put("4", "four");
        hm.put("3", "three");
        hm.put("1", "one");
        hm.put("2", "two");

        Map<String, String> treeMap = new TreeMap<String, String>(hm);
        System.out.println(treeMap);
    }
}