public class Untitled1{
public String truansDate(String date,int ds){
Calendar cal = Calendar.getInstance();
int year = Integer.parseInt(date.substring(0,4));
int month = Integer.parseInt(date.substring(5,7));
int day = Integer.parseInt(date.substring(8,10));
cal.set(year,month,day,0,0,0);
cal.add(Calendar.DATE,ds);
return (cal.getTime().getYear()+1900)+"/"+cal.getTime().getMonth()+"/"+cal.getTime().getDate();
}
public static void main(java.lang.String[] args) {
Untitled1 u = new Untitled1();
System.out.println(u.truansDate("2003/02/12",-13));
}
}
public String truansDate(String date,int ds){
Calendar cal = Calendar.getInstance();
int year = Integer.parseInt(date.substring(0,4));
int month = Integer.parseInt(date.substring(5,7));
int day = Integer.parseInt(date.substring(8,10));
cal.set(year,month,day,0,0,0);
cal.add(Calendar.DATE,ds);
return (cal.getTime().getYear()+1900)+"/"+cal.getTime().getMonth()+"/"+cal.getTime().getDate();
}
public static void main(java.lang.String[] args) {
Untitled1 u = new Untitled1();
System.out.println(u.truansDate("2003/02/12",-13));
}
}
解决方案 »
- Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException原因是?
- PreparedStatement ps = this.conn.prepareStatement("delete from 后台报错
- 为什么要继承Frame类呢
- 大家看看我这样用映射机制怎么样
- 这样的代码到底有没有问题,如果有问题,怎么修改之?
- 帮忙Thinking in java第四章里一段示例代码
- 为什么我的程序在压成jar文件之前可以执行,压了以后会出现Exception in thread "main" java.lang.NoClassDefFoundError:?
- 关于Socket的编程!在线等待!急!
- 诚心请教JAVA写基于UDP协议的大型服务器程序(5000人左右)经验??
- sjc0722(★刀剑笑★) ﹐lengnuan(冷暖自知)快來取分
- 不能登陆SQL PLUS
- 去哪里下载有com.sun.xml.parser.Resolver这个类的包?在sun网站找遍了!!
String strDeadLine = "3";
Calendar calendar = Calendar.getInstance();
DateFormat f = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss");
try
{
calendar.setTime(f.parse(strBeginDate));
showInfo("差异时间:" + Integer.parseInt(strDeadLine));
calendar.add(Calendar.DAY_OF_YEAR,Integer.parseInt(strDeadLine));
showInfo("处理时限:" + f.format(calendar.getTime()).toString());
showInfo(f.format(calendar.getTime()).toString());
}
catch(ParseException e)
{
e.printStackTrace();
} public void showInfo(String strInfo)
{
if(DEBUG)
{
System.out.println(strInfo);
}
}
2003/2/31
我这又个程序:
public class testData { /**
*
*/
public testData() {
GregorianCalendar testData = new GregorianCalendar(2003,1, 18);
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
testData.add(Calendar.DATE, 12);
Date date = testData.getTime();
String str = format.format(date);
System.out.println("15 day testData amortized on " + str);
} public static void main(String[] args) {
testData dd = new testData();
}
}
想把直接输入的日期 换成一个变量,从外面可以通过输入的变量来调用此方法,
怎么改呢?()
public calDate(Date date, long timeMillis){
long tmpTime = date.getTime() + timeMillis;
return new Date(tmptime);
}
public Calendar calDate(Calendar date, long timeMillis){
long tmpTime = date.getTime().getTime();
return date.clone().setTimeInMillis(tmpTime);
}
上面的回复漏了返回类型,不好意思。