SimpleDateFormat parses wrong date successfully (lenient = false). Why?

Hi
I've got a problem validating date by SimpleDateFormat. Format "yyyy" successfully parses string like "2009-78" into date 01.01.2009. Can you please help me with it?
Here is my code:
SimpleDateFormat format = new SimpleDateFormat("yyyy");
format.setLenient(false);
String dateStr = "2009-78";
Date date;
try {
    date = format.parse(dateStr);
} catch (ParseException e) {
    date = null;
    e.printStackTrace();
System.out.println(String.format("String '%s' parsed to date %s", dateStr, date));Output:
String '2009-78' parsed to date Thu Jan 01 00:00:00 MSK 2009I need an exception to be thrown in such situation. How can I check where the string represents a correct date?
Thanks for your help.
Evgeny
Edited by: su.eug on Apr 13, 2009 12:56 AM

Read the comments in the API:
[http://java.sun.com/javase/6/docs/api/java/text/DateFormat.html#parse(java.lang.String)|http://java.sun.com/javase/6/docs/api/java/text/DateFormat.html#parse(java.lang.String)]
You could try the other overload of parse, if you want to test whether the whole String was used:
[http://java.sun.com/javase/6/docs/api/java/text/SimpleDateFormat.html#parse(java.lang.String, java.text.ParsePosition)|http://java.sun.com/javase/6/docs/api/java/text/SimpleDateFormat.html#parse(java.lang.String,%20java.text.ParsePosition)]
(Sorry--the second link doesn't go to the right place. There is a version of "parse" with two parameters, which you can use to determine if the whole String was used.)

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