updated exercise 2 and unified prints

Exercise1/Exercise1.java

@@ -9,7 +9,7 @@ public class Exercise1 {
         try (var zipper = new TestZipper("books.zip")) {
             zipper.run();
         } catch (IOException e) {
-            System.err.println("A failure occurred");
+            System.err.println("Execution failed!");
             e.printStackTrace();
         }
     }

Exercise2/Exercise2.java

-package fi.utu.tech.ooj.exercise2.teht2;
+package fi.utu.tech.ooj.exercise4.exercise2;
 
 import java.io.IOException;
 
-public class Teht2 {
-    public Teht2() {
-        System.out.println("Tehtävä 2");
+public class Exercise2 {
+    public Exercise2() {
+        System.out.println("Exercise 2");
 
         try (var zipper = new TestZipper2("books.zip")) {
             zipper.run();
         } catch (IOException e) {
-            System.err.println("Ajo epäonnistui!");
+            System.err.println("Execution failed!");
             e.printStackTrace();
         }
     }

Exercise2/TestZipper.java

+package fi.utu.tech.ooj.exercise4.exercise2;
+
+import fi.utu.tech.ooj.exercise4.exercise1.Zipper;
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+class Book {
+}
+
+class TestZipper2 extends Zipper {
+    Book[] books = new Book[100];
+    int idx = 0;
+
+    TestZipper2(String zipFile) throws IOException {
+        super(zipFile);
+    }
+
+    @Override
+    public void run() throws IOException {
+        super.run();
+
+        System.out.printf("""
+
+                Handled %d Books.
+                Now we could sort it out a bit.
+
+                """, idx);
+    }
+
+    @Override
+    protected Handler createHandler(Path file) {
+        return new Handler(file) {
+            @Override
+            public void handle() {
+                books[idx++] = new Book();
+            }
+        };
+    }
+}