CalendarUtils.java

package cn.org.rapid_framework.util;

import java.util.Calendar;
import java.util.Date;

public class CalendarUtils {
	
	private CalendarUtils() {}
	
	public static Date add(int field,Date date,int value) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		
		int fieldNewValue = (c.get(field) + value);
		c.set(field, fieldNewValue);
		return c.getTime();
	}
 
	public static int get(int field,Date date) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		return c.get(field);
	}
	
	public static boolean isEqualField(int field, Date d1, Date d2) {
		Calendar c1 = Calendar.getInstance();
		c1.setTime(d1);
		
		Calendar c2 = Calendar.getInstance();
		c2.setTime(d2);
		return c1.get(field) == c2.get(field);
	}
	
	
}