e377. determining a person's age.txt

这里面包含了一百多个JAVA源文件

This example uses the Calendar class to compute a person's age. 
    // Create a calendar object with the date of birth
    Calendar dateOfBirth = new GregorianCalendar(1972, Calendar.JANUARY, 27);
    
    // Create a calendar object with today's date
    Calendar today = Calendar.getInstance();
    
    // Get age based on year
    int age = today.get(Calendar.YEAR) - dateOfBirth.get(Calendar.YEAR);
    
    // Add the tentative age to the date of birth to get this year's birthday
    dateOfBirth.add(Calendar.YEAR, age);
    
    // If this year's birthday has not happened yet, subtract one from age
    if (today.before(dateOfBirth)) {
        age--;
    }