From 36a56d87683c402a2b188dd1478935b3e9fdda51 Mon Sep 17 00:00:00 2001
From: Martin Vatshelle <mva021@ii0233228.klient.uib.no>
Date: Tue, 30 Jan 2024 16:19:27 +0100
Subject: [PATCH] Code after lecture
---
src/main/java/lecture5/objects/Book.java | 18 ++++++++
src/main/java/lecture5/objects/Library.java | 41 +++++++++++++++++++
.../java/lecture5/objects/PersonsObjects.java | 3 +-
3 files changed, 61 insertions(+), 1 deletion(-)
create mode 100644 src/main/java/lecture5/objects/Book.java
create mode 100644 src/main/java/lecture5/objects/Library.java
diff --git a/src/main/java/lecture5/objects/Book.java b/src/main/java/lecture5/objects/Book.java
new file mode 100644
index 0000000..c9d8117
--- /dev/null
+++ b/src/main/java/lecture5/objects/Book.java
@@ -0,0 +1,18 @@
+package lecture5.objects;
+
+public class Book {
+ //feltvariabler
+ String title;
+ String author;
+
+ public Book(String title, String author){
+ this.title = title;
+ this.author = author;
+ }
+
+ @Override
+ public String toString() {
+ return title+" by "+author;
+ }
+
+}
diff --git a/src/main/java/lecture5/objects/Library.java b/src/main/java/lecture5/objects/Library.java
new file mode 100644
index 0000000..5bd296c
--- /dev/null
+++ b/src/main/java/lecture5/objects/Library.java
@@ -0,0 +1,41 @@
+package lecture5.objects;
+
+import java.util.ArrayList;
+
+public class Library {
+
+ ArrayList<Book> books;
+
+ public Library() {
+ books = new ArrayList<Book>();
+ }
+
+ void add(Book book) {
+ books.add(book);
+ }
+
+ boolean hasBook(Book book) {
+ return books.contains(book);
+ }
+
+ public static void main(String[] args) {
+ Library myBooks = new Library();
+ System.out.println(myBooks.books);
+
+ Book myBook = new Book("Objects","Martin");
+
+ myBooks.add(myBook);
+ System.out.println(myBooks.books);
+
+ Book myFavorite = new Book("INF101", "Sondre");
+ System.out.println(myBooks.hasBook(myFavorite));
+ myBooks.add(myFavorite);
+ System.out.println(myBooks.hasBook(myFavorite));
+ System.out.println(myBooks.books);
+
+ Book wanted = new Book("Objects","Martin");
+ System.out.println(myBooks.hasBook(wanted));
+ }
+
+
+}
diff --git a/src/main/java/lecture5/objects/PersonsObjects.java b/src/main/java/lecture5/objects/PersonsObjects.java
index ad8103b..51bd1c8 100644
--- a/src/main/java/lecture5/objects/PersonsObjects.java
+++ b/src/main/java/lecture5/objects/PersonsObjects.java
@@ -60,7 +60,8 @@ public class PersonsObjects {
public static void printAll(ArrayList<Person> persons) {
for(int i=0; i<persons.size(); i++) {
Person p = persons.get(i);
- System.out.println(p.name+" is "+ p.age+" years.");
+ //System.out.println(p.name+" is "+ p.age+" years.");
+ System.out.println(p);
}
}
}
--
GitLab