jsp取出7天前时间

Question

我有string = 20110302   string1 = 20110228   string2 = 20110218   string3 = 20110219 string4 = 20110227  string5 = 20100301
通过jsp 把当前时间7天前的字串得到最终筛选打印出string2 = 20110218   string3 = 20110219  string5 = 20100301小弟初学 线等 代码

Answer 1

public static void doTest(){

String[] str = {"20110214","20110114","20110314","20110210","20110320","20110224"};
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
Date date = new Date();
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DAY_OF_MONTH, -7);
for(int i=0;i<str.length;i++){
if(Integer.valueOf(sdf.format(cal.getTime())) > Integer.valueOf(str[i])){
System.out.println("===="+ str[i]);
}

}

}