jspcalendar.java

《JSP时尚编程百例》一例源代码81-100

package cal;
import java.text.DateFormat;
import java.util.*;

public class JspCalendar
{
    Calendar  calendar = null;
    Date currentDate;
    
    public JspCalendar()
    {
        calendar = Calendar.getInstance();
        Date trialTime = new Date();
        calendar.setTime(trialTime);
    }
    
    public int getYear() 
    {
        return calendar.get(Calendar.YEAR);
    }
    
    public String getMonth()
    {
        int m = getMonthInt();
        String[] months = new String [] { "January", "February", "March","April", "May", "June","July", "August", "September","October", "November", "December" };
        if (m > 12)
            return "Unknown to Man";
            return months[m - 1];
    }
    
    public String getDay()
    {
        int x = getDayOfWeek();
        String[] days = new String[] {"Sunday", "Monday", "Tuesday", "Wednesday","Thursday", "Friday", "Saturday"};
        if (x > 7)
            return "Unknown to Man";
        return days[x - 1];
    }
    
    public int getMonthInt()
    {
        return 1 + calendar.get(Calendar.MONTH);
    }
    
    public String getDate()
    {
        return getMonthInt() + "/" + getDayOfMonth() + "/" +  getYear();
    }
    
    public String getCurrentDate()
    {
        Date dt = new Date ();
        calendar.setTime (dt);
        return getMonthInt() + "/" + getDayOfMonth() + "/" +  getYear();
    }
    
    public String getNextDate()
    {
        calendar.set (Calendar.DAY_OF_MONTH, getDayOfMonth() + 1);
        return getDate ();
    }
    
    public String getPrevDate()
    {
        calendar.set (Calendar.DAY_OF_MONTH, getDayOfMonth() - 1);
        return getDate ();
    }
    
    public String getTime()
    {
        return getHour() + ":" + getMinute() + ":" + getSecond();
    }
    
    public int getDayOfMonth()
    {
        return calendar.get(Calendar.DAY_OF_MONTH);
    }
    
    public int getDayOfYear() 
    {
        return calendar.get(Calendar.DAY_OF_YEAR);
    }
    
    public int getWeekOfYear()
    {
        return calendar.get(Calendar.WEEK_OF_YEAR);
    }
    
    public int getWeekOfMonth()
    {
        return calendar.get(Calendar.WEEK_OF_MONTH);
    }
    
    public int getDayOfWeek()
    {
        return calendar.get(Calendar.DAY_OF_WEEK);
    }
    
    public int getHour()
    {
        return calendar.get(Calendar.HOUR_OF_DAY);
    }
    
    public int getMinute()
    {
        return calendar.get(Calendar.MINUTE);
    }
    
    public int getSecond()
    {
        return calendar.get(Calendar.SECOND);
    }
    
    public int getEra()
    {
        return calendar.get(Calendar.ERA);
    }
    
    public String getUSTimeZone()
    {
        String[] zones = new String[] {"Hawaii", "Alaskan", "Pacific","Mountain", "Central", "Eastern"};
        return zones[10 + getZoneOffset()];
    }
    
    public int getZoneOffset()
    {
        return calendar.get(Calendar.ZONE_OFFSET)/(60*60*1000);
    }   
    
    public int getDSTOffset()
    {
        return calendar.get(Calendar.DST_OFFSET)/(60*60*1000);
    }
    
    public int getAMPM() 
    {
        return calendar.get(Calendar.AM_PM);
    }
}