Question: How would I reimplement this voice mail system so that the Law of Demeter holds? In particular, the MailSystem class should NOT give out Mailbox












How would I reimplement this voice mail system so that the Law of Demeter holds? In particular, the MailSystem class should NOT give out Mailbox Objects. Instead, you need to add additional methods to the MailSystem class. Critique the java.io.file class. Where is it inconsistent? Where does it lack clarity? Where is it not cohesive?
ch02/mail/Message.java 2 A message left by the caller 4 public class Hessage Construct a Message object @param messageText the message text 1 public Message(String nessageText) text nessageText; 12 13 14 Get the nessage text greturn nessage text 16 17 18 ' 19 public String getText() 21 return text; 23 24 private String text; ch02/mail/MessageQueue.java 1inport java.util.ArrayList; 4A first-in, first-out collection of messages. This 5 inplementation is not very efficient. We will consider 6 a more efficient inplenentation in chapter 3 8 public class MessageQueue Constructs an empty message queue 12 13 public MessageQueue() 14 ch02/mail/Message.java 2 A message left by the caller 4 public class Hessage Construct a Message object @param messageText the message text 1 public Message(String nessageText) text nessageText; 12 13 14 Get the nessage text greturn nessage text 16 17 18 ' 19 public String getText() 21 return text; 23 24 private String text; ch02/mail/MessageQueue.java 1inport java.util.ArrayList; 4A first-in, first-out collection of messages. This 5 inplementation is not very efficient. We will consider 6 a more efficient inplenentation in chapter 3 8 public class MessageQueue Constructs an empty message queue 12 13 public MessageQueue() 14
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