java 生成随即日期

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.Random;

public class runMain {

/**

* @param args

*/

public static Logger log = Logger.getLogger(runMain.class);

public static void main(String[] args) {

Random rand = new Random();

SimpleDateFormat format = new SimpleDateFormat( "yyyy-MM-dd ");

Calendar cal = Calendar.getInstance();

cal.set(1900, 0, 1);

long start = cal.getTimeInMillis();

cal.set(2008, 0, 1);

long end = cal.getTimeInMillis();

for(int i = 0; i < 243; i++) {

Date d = new Date(start + (long)(rand.nextDouble() * (end - start)));

System.out.println(format.format(d));

}

}

}