dateformat.java

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/**
 * 
 */
package cn.edu.nju.software.ruse;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @author spring
 *
 */
public class DateFormat {
	private volatile static DateFormat dateFormat;
	
	private DateFormat() {
		
	}
	
	public static DateFormat getDateFormat() {
		if(dateFormat == null) {
			synchronized (DateFormat.class) {
				if(dateFormat == null) {
					dateFormat = new DateFormat();
				}
			}
		}
		return dateFormat;
	}
	
	public String format(long lastModified) {
		Date date;
		SimpleDateFormat sd = new SimpleDateFormat("yyyyMMddHHmmss");
		String dateString;
		date = new Date(lastModified);
		dateString = sd.format(date);
		return dateString;
	}
}