My code is below. It works, but I don't like it. What is the "best" way to create a text command parser for a text adventure game, from an object-oriented standpoint? Obviously opinions will differ, but opinions are what I'm looking for. I have had no classes or formal training and I don't want to develop bad habits. Also, note, none of these classes are finished, of course. Thanks in advance. If anyone needs to see the rest of the code, it is located here:

NOTE: I understand links are illegal for those with under 20 posts. I assume this is due to spamming concerns? I wasn't sure if this rule applied to text urls, so I removed the protocol and www parts to stop vB from automatically making them links. If this is against the rule I will correct my mistake immediately.

derrikc.com/java/SimpleGame/GameServer.java <-- this is the file the code below is from, but it won't compile without CharacterManager
and Character, and it's not really worth running without also using the client.
derrikc.com/java/SimpleGame/CharacterManager.java
derrikc.com/java/SimpleGame/Character.java
derrikc.com/java/SimpleGame/GameClient.java

Java Code:
		public void recieveCommands() {
			while(clientChar.getLoggedIn() == true) { // continue as long as the character is logged in
				String[] clientInput = null;
				clientInput = clientInput();
				if (clientChar.getLoggedIn() == true) { // an extra check in case the character is logged out due to a recieved command
					
					
					if (clientInput[0].equals("hello")) { // handler for a "hello" message from the client
						clientOS.println(systemMessage("Hello, " + clientChar.getUsername() + "."));
					}
					
					
					if (clientInput[0].equals("say")) { // handler for a "say" message from the client
						String chatMsg = "";
						// rebuild a whole String out of the split up string including all text but the "say" command
						for (int i = 1; i < clientInput.length; i++) {
							chatMsg = chatMsg + clientInput[i] + " ";
						}
						// send the print command followed by the chat message to every authenticated client
						for (ClientServiceThread client : connectedList) {
							client.chatMessage(clientChar.getUsername(), chatMsg);
						} // end for
					} // end if		
					
					
					
				} // end if
			} // end while
		} // end recieveCommands()