Java Coding Problems

187. Joining the results of a stream

Let's assume that we have the following Melon class:

public class Melon {  private String type;  private int weight;  // constructors, getters, setters, equals(),  // hashCode(), toString() omitted for brevity}

Let's also assume that we have the List of Melon:

List<Melon> melons = Arrays.asList(new Melon("Crenshaw", 2000),  new Melon("Hemi", 1600), new Melon("Gac", 3000),  new Melon("Apollo", 2000), new Melon("Horned", 1700),  new Melon("Gac", 3000), new Melon("Cantaloupe", 2600));

In the previous problem, we talked about the Stream API that's built into Collectors. In this category, we also have Collectors.joining(). The goal of these collectors is to concatenate the elements of a stream into a String in the ...