Some crazy code

Calendar.java

/*
 * Works from dates after Sep 14, 1752 (New System of Gregorian Calendar (UK adoption))
 * May crash or return junk value for negative or other invalid inputs.
 */
public static String calendar(int d, int m, int y)  {return "Sun    Mon    Tues   Wednes Thurs  Fri    Satur  ".substring(d=((6-2*(y/100%4)+(m<3&&y%4==0&&(y%100!=0||y%400==0)?-1:0)+(y%=100)/12+5*(y%12)/4+"xbeehcfhdgbeg".charAt(m)+d)%7)*7,d+7).trim()+"day";}