java.util.Date.setYear() should recalc day of week

Steps to reproduce
Compile and run the following code

/* tests setYear() */

import java.util.Date;

class setYearTest
{
    public static void main(String a[])
    {
       Date d1 = new Date(95, 10, 21);
       System.out.println("Starting date: " + d1);
       d1.setYear(96);
       System.out.println("Wrap date to Thu Nov 21, 1996: " + d1);
    }
}