Added 25 solutions

Java/Object Oriented Programming/Java Abstract Class/Solution.java

@@ -0,0 +1,31 @@
+//     Author: Rodney Shaghoulian
+//     Github: github.com/rshaghoulian
+// HackerRank: hackerrank.com/rshaghoulian
+
+import java.util.*;
+
+abstract class Book {
+    String title;
+    abstract void setTitle(String s);
+    String getTitle() {
+        return title;
+    }
+}
+
+class MyBook extends Book {
+    void setTitle(String s) {
+        title = s;
+    }
+}
+
+public class Main {
+    public static void main(String []args) {
+        //Book new_novel=new Book(); This line prHMain.java:25: error: Book is abstract; cannot be instantiated
+        Scanner sc = new Scanner(System.in);
+        String title = sc.nextLine();
+        MyBook new_novel = new MyBook();
+        new_novel.setTitle(title);
+        System.out.println("The title is: "+ new_novel.getTitle());
+        sc.close();
+    }
+}