Java Coding Problems

115. Sorting a Map

There are several solutions for sorting a Map. For a start, let's assume the following Map of Melon:

public class Melon implements Comparable {  private final String type;  private final int weight;  @Override  public int compareTo(Object o) {    return Integer.compare(this.getWeight(), ((Melon) o).getWeight());  }  // constructor, getters, equals(), hashCode(),  // toString() omitted for brevity}Map<String, Melon> melons = new HashMap<>();melons.put("delicious", new Melon("Apollo", 3000));melons.put("refreshing", new Melon("Jade Dew", 3500));melons.put("famous", new Melon("Cantaloupe", 1500));

Now, let's examine several solutions for sorting this Map. Basically, the goal is to expose the methods from the following screenshot via ...