Add a method called public Book get$($String key$)$ that retrieves an item given a key parameter from the HashMap. Make sure that the key from the parameter is in the HashMap.

Add a method called public void remove$($String key$)$ that removes an item pairs given a key parameter from the HashMap. Make sure that the key from the parameter is in the HashMap.

Add a method called public void printAll$()\{..\}$ that prints out all key and value pairs in the HashMap. Use an for$-$each loop.

Add a method called public void getBooksStartWithKey$($String prefix$)$that prints

out all key and value pairs in the HashMap only if the title of the Book in the

HashMap start with the parameter prefix.

Test out all your methods in the main method. Create a new