Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.NavigableMap;
import java.util.TreeMap;

public class Main {
    public static void main(String[] args) {
        NavigableMap<Integer, String> map = new TreeMap<Integer, String>();
        map.put(2, "two");
        map.put(1, "one");
        map.put(3, "three");
        System.out.println(map.headMap(1) + "\n");

    }
}