Message.java

public class Message{
	public String recipient, sender,body;
	
	public Message(String recipient, String sender,String body){
		this.recipient=recipient;
		this.sender=sender;
		this.body = body;
	}
	public void append(String text){
		this.body = this.body + text;
	}
	public String toString(){
		return "Sender :" + this.sender + ".\nReciever :" + this.recipient +"\n" + "Message Body:\n" + this.body;
	}
}

Program.java

public class Program {

	public static void main(String[] args) {

		Message test = new Message("mongeyc@tcd.ie", "test@test.com","This should");
		test.append(" hopefully work!");
		System.out.print(test);
	}

}