Commit f80724c3 authored by Trisha Gee's avatar Trisha Gee
Browse files

[Ch10b] Sets and Maps should also be assigned to the interface type instead of concrete type

parent 9dd42096

src/main/java/ch10b/TestMap.java

+1 −1
Changes for src/main/java/ch10b/TestMap.java: 1 added line, 1 removed line.
Original line number Diff line number Diff line
@@ -4,7 +4,7 @@ import java.util.*; 


public class TestMap {

  public static void main(String[] args) {

    HashMap<String, Integer> scores = new HashMap<>();

    Map<String, Integer> scores = new HashMap<>();



    scores.put("Kathy", 42);

    scores.put("Bert", 343);

src/main/java/ch10b/TestTree.java

+1 −1
Changes for src/main/java/ch10b/TestTree.java: 1 added line, 1 removed line.
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ public class TestTree { 
    Book b2 = new Book("Remix your Body");

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



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

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

    tree.add(b1);

    tree.add(b2);

    tree.add(b3);

src/main/java/ch10b/TestTreeComparator.java

+1 −1
Changes for src/main/java/ch10b/TestTreeComparator.java: 1 added line, 1 removed line.
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ public class TestTreeComparator { 
    Book b2 = new Book("Remix your Body");

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

    BookCompare bookCompare = new BookCompare();

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

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

    tree.add(b1);

    tree.add(b2);

    tree.add(b3);

© 2026 O’Reilly Media, Inc. All trademarks and registered trademarks appearing on oreilly.com are the property of their respective owners. Terms of Service • Privacy Policy • Editorial Independence