added Javadoc in Class Message

client/src/main/java/ch/zhaw/pm2/multichat/client/Message.java

@@ -1,11 +1,21 @@
 package ch.zhaw.pm2.multichat.client;
 
+/**
+A Message object represents one Message of a client. Can be stored in ClientMessageList.
+ */
 public class Message {
     private MessageType type;
     private String sender;
     private String receiver;
     private String text;
 
+    /**
+     * Constructor of Message. Needs all Information about a Message to save them.
+     * @param type Message (if it's a message typed by a user), Error or Information (if it is generated automatically, in this case sender and reciever will be null)
+     * @param sender The User who has sent the message.
+     * @param receiver The User who should recieve the message.
+     * @param text The Text of the message.
+     */
     public Message(MessageType type, String sender, String receiver, String text) {
         this.type = type;
         this.sender = sender;
@@ -13,28 +23,48 @@ public class Message {
         this.text = text;
     }
 
+    /**
+     * Checks if the Filter String is contained in one of the datafields sender, receiver or text
+     * @param filter The Filter String
+     * @return true if it the Filter String is contained in a datafield.
+     */
     public boolean matchesFilter(String filter){
         return (sender != null && sender.contains(filter)) ||
             (receiver != null && receiver.contains(filter)) ||
             (text != null && text.contains(filter));
     }
 
+    /**
+     * @return The type of the message.
+     */
     public MessageType getType() {
         return type;
     }
 
+    /**
+     * @return The User who has sent the Message.
+     */
     public String getSender() {
         return sender;
     }
 
+    /**
+     * @return The Reciever who recieves the Message.
+     */
     public String getReceiver() {
         return receiver;
     }
 
+    /**
+     * @return The Text of the Message.
+     */
     public String getText() {
         return text;
     }
 
+    /**
+     * Enummeration of Message Types.
+     */
     public enum MessageType {
         INFO, MESSAGE, ERROR;
     }