[Ch10b] TreeSet with comparator (adc1fc8a) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch10b/TestTree.java

+7 −1

Changes for src/main/java/ch10b/TestTree.java: 7 added lines, 1 removed line.
Original line number	Diff line number	Diff line
		@@ -21,7 +21,7 @@ public class TestTree {
		}

		class Book implements Comparable<Book> {
		private String title;
		String title;
		public Book(String t) {
		title = t;
		}
		@@ -29,4 +29,10 @@ class Book implements Comparable<Book> {
		public int compareTo(Book other) {
		return title.compareTo(other.title);
		}

		public String toString() {
		return "Book{" +
		"title='" + title + '\'' +
		'}';
		}
		}
		No newline at end of file

0 → 100644

+28 −0

Changes for src/main/java/ch10b/TestTreeComparator.java: 28 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		package ch10b;

		import java.util.Comparator;
		import java.util.TreeSet;

		public class TestTreeComparator {
		public static void main(String[] args) {
		new TestTreeComparator().go();
		}

		public void go() {
		Book b1 = new Book("How Cats Work");
		Book b2 = new Book("Remix your Body");
		Book b3 = new Book("Finding Emo");
		BookCompare bookCompare = new BookCompare();
		TreeSet<Book> tree = new TreeSet<>(bookCompare);
		tree.add(b1);
		tree.add(b2);
		tree.add(b3);
		System.out.println(tree);
		}
		}

		class BookCompare implements Comparator<Book> {
		public int compare(Book one, Book two) {
		return one.title.compareTo(two.title);
		}
		}