CONVERT INTO JAVA CODE, DONT USE ANY BUILT IN DATA SCRTUTURE LIBRARY CONVERT AS IT IS

/* * Book Store Implementation */ #include #include #include /* * Node Declaration */ using namespace std; struct node { string book_name; string author; struct node *next; struct node *prev; }*start; class book_store { public: void addBook(string book_name, string author); //void delete_element(int value); //void search(string name); void display(); void search(string book_name); void remove(string name); void countBooks(); book_store() { start = NULL; } }; int main() { int choice; string name; string author; book_store b; while (1) { cout<>choice; switch ( choice ) { case 1: cin.ignore(80, ' '); cout<<"Name of the Book : "; cin>>name; cin.ignore(80, ' '); cout<<"Author of the Book : "; cin>>author; b.addBook(name, author); cout<>name; b.remove(name); break; case 3: b.countBooks(); break; case 4: cin.ignore(80, ' '); cout<<"Name of the Book you want to search: "; cin>>name; b.search(name); break; case 5: b.display(); break; case 8: exit(1); default: cout<<"Wrong choice"<book_name=book_name; temp->author=author; temp->next = NULL; if (start == NULL) { temp->prev = NULL; start = temp; } else { s = start; while (s->next != NULL) s = s->next; s->next = temp; temp->prev = s; } } void book_store::remove(string name) { struct node *tmp, *q; if (start->book_name == name) { tmp = start; start = start->next; start->prev = NULL; cout<<"Book Removed."<next->next != NULL) { if (q->next->book_name == name) { tmp = q->next; q->next = tmp->next; tmp->next->prev = q; cout<<"Book Removed."<next; } if (q->next->book_name == name) { tmp = q->next; free(tmp); q->next = NULL; cout<<"Book Removed."<book_name<<" \t Author Name: "<< q->author<next; } } void book_store::countBooks() { struct node *q = start; int cnt = 0; while (q != NULL) { q = q->next; cnt++; } cout<<"Number of Books in Book Store: "<book_name==name) { cout<<"Book is present in Book Store"<next; } } }