Java Code For Comparing Dates

Calendar xmas = new GregorianCalendar(1998, Calendar.DECEMBER, 25);

Calendar newyears = new GregorianCalendar(1999, Calendar.JANUARY, 1);

// Determine which is earlier
boolean b = xmas.after(newyears); // false
b = xmas.before(newyears); // true


// Get difference in milliseconds
long diffMillis = newyears.getTimeInMillis()-xmas.getTimeInMillis();

// Get difference in seconds
long diffSecs = diffMillis/(1000); // 604800

// Get difference in minutes
long diffMins = diffMillis/(60*1000); // 10080

// Get difference in hours
long diffHours = diffMillis/(60*60*1000); // 168

// Get difference in days
long diffDays = diffMillis/(24*60*60*1000); // 7