GregorianCalendar Help

[jamiecottonuk]

hiya all i am trying to implement a GregorianCalendar into my work for an email organiser but tis not working i get

ava.lang.NullPointerException
	at Message.toString(Message.java:79)
	at java.lang.String.valueOf(String.java:2177)
	at java.lang.StringBuffer.append(StringBuffer.java:361)
	at Inbox.toString(Inbox.java:22)
	at java.lang.String.valueOf(String.java:2177)
	at java.io.PrintStream.print(PrintStream.java:462)
	at java.io.PrintStream.println(PrintStream.java:599)
	at EmailOrganiser.main(EmailOrganiser.java:33)
Exception in thread "main"

Here is a link to my files www.mikecotton.com/java_files.zip and wud be very pleased if somone could have a look and tell me where i am going wrong

Thanx

[doredson]

You didn't initialize the MyTime object in the Message constructor:

this.timeReceived = timeReceived;

timeReceived is not passed in. I think you really wanted to initialize it with:

this.timeReceived = new MyTime(day, month, year, hour, minute);