测试

public class DR {public static void main(String[] args) {Random rm=new Random();long base=System.currentTimeMillis();//System.out.println(rm.nextInt(86400*1000*15));//SimpleDateFormat sdf=newfor(int i=0;i<100;i++){Date date=new Date(base+rm.nextInt(86400*1000*15));System.out.println(date);}}}

测试