diff --git a/Doubleroom.class b/Doubleroom.class
new file mode 100644
index 0000000..7a37b98
Binary files /dev/null and b/Doubleroom.class differ
diff --git a/Food.class b/Food.class
new file mode 100644
index 0000000..19fbcaf
Binary files /dev/null and b/Food.class differ
diff --git a/Hotel.class b/Hotel.class
new file mode 100644
index 0000000..62418cb
Binary files /dev/null and b/Hotel.class differ
diff --git a/Main.class b/Main.class
new file mode 100644
index 0000000..1161f67
Binary files /dev/null and b/Main.class differ
diff --git a/Main.java b/Main.java
index 2255c0a..9d60225 100755
--- a/Main.java
+++ b/Main.java
@@ -49,7 +49,7 @@ class Singleroom implements Serializable
         this.gender=gender;
     }
 }
-class Doubleroom extends Singleroom implements Serializable
+class Doubleroom extends Singleroom
 { 
     String name2;
     String contact2;
@@ -356,7 +356,6 @@ static void bill(int rn,int rtype)
     
     static void deallocate(int rn,int rtype)
     {
-        int j;
         char w;
         switch (rtype) {
             case 1:               
@@ -487,6 +486,7 @@ public void run() {
         FileOutputStream fout=new FileOutputStream("backup");
         ObjectOutputStream oos=new ObjectOutputStream(fout);
         oos.writeObject(hotel_ob);
+        oos.close();
         }
         catch(Exception e)
         {
@@ -508,6 +508,7 @@ public static void main(String[] args){
             FileInputStream fin=new FileInputStream(f);
             ObjectInputStream ois=new ObjectInputStream(fin);
             Hotel.hotel_ob=(holder)ois.readObject();
+            ois.close();
         }
         Scanner sc = new Scanner(System.in);
         int ch,ch2;
diff --git a/NotAvailable.class b/NotAvailable.class
new file mode 100644
index 0000000..bda0408
Binary files /dev/null and b/NotAvailable.class differ
diff --git a/Singleroom.class b/Singleroom.class
new file mode 100644
index 0000000..90ddb8f
Binary files /dev/null and b/Singleroom.class differ
diff --git a/holder.class b/holder.class
new file mode 100644
index 0000000..422e296
Binary files /dev/null and b/holder.class differ
diff --git a/write.class b/write.class
new file mode 100644
index 0000000..1760ae3
Binary files /dev/null and b/write.class differ