[Ch10b] TreeSet examples

package ch10b;

import java.util.*;

public class Jukebox9 {

  private final MockMoreSongs mockFile = new MockMoreSongs();

  public static void main(String[] args) {

    new Jukebox9().go();

  }

  public void go() {

    List<SongV4> songList = mockFile.getSongs();

    System.out.println(songList);

    songList.sort((one, two) -> one.getTitle().compareTo(two.getTitle()));

    System.out.println(songList);

    Set<SongV4> songSet = new TreeSet<>(songList);

    System.out.println(songSet);

  }

}

package ch10b;

import java.util.*;

public class TestTree {

   public static void main (String[] args) {

      new TestTree().go();

   }

   public void go() {

     Book b1 = new Book("How Cats Work");

     Book b2 = new Book("Remix your Body");

     Book b3 = new Book("Finding Emo");

     TreeSet<Book> tree = new TreeSet<>();

     tree.add(b1);

     tree.add(b2);

     tree.add(b3);

     System.out.println(tree);

   }

}

class Book {

   String title;

   public Book(String t) {

     title = t;

   }

}

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