java 时间与字符串之间的转换
1. long字符串转换成yyyy-MM-dd HH:mm:ss格式输出
- import java.text.SimpleDateFormat;
- import java.util.Date;
- //将long字符串转换成格式时间输出
- public class LongToString {
- public static void main(String argsp[]){
- String time="1256006105375";
- Date date=new Date(Long.parseLong(time));
- SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
- time=formatter.format(date);
- System.out.println(time);
- }
- }
2. 字符串转换成时间
[java]
- import java.text.SimpleDateFormat;
- import java.util.Date;
- import ognl.ParseException;
- public class StringToDate {
- public static void main(String argsp[]) throws Exception{
- String time="2010-11-20 11:10:10";
- Date date=null;
- SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
- date=formatter.parse(time);
- System.out.println(date);
- }
- }
3. 取得当前系统时间,返回yyyy-MM-dd HH:mm:ss字符串
- import java.text.SimpleDateFormat;
- import java.util.Date;
- public class StringToDate {
- public static void main(String argsp[]) throws Exception{
- Date date=new Date();
- SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
- String time=formatter.format(date);
- System.out.println(time);
- }
- }
4. 取得当前系统时间,返回 HH:mm:ss字符串
- import java.text.SimpleDateFormat;
- import java.util.Date;
- public class StringToDate {
- public static void main(String argsp[]) throws Exception{
- Date date=new Date();
- SimpleDateFormat formatter=new SimpleDateFormat("HH:mm:ss");
- String time=formatter.format(date);
- System.out.println(time);
- }
- }
5.将20101125102503转换成2010-11-25 10:25:03输出
- import java.text.SimpleDateFormat;
- import java.util.Date;
- public class StringToDate {
- public static void main(String argsp[]) throws Exception{
- String time="20101125102503";
- SimpleDateFormat formatter1=new SimpleDateFormat("yyyy-HH-dd HH:mm:ss");
- SimpleDateFormat formatter2=new SimpleDateFormat("yyyyHHddHHmmss");
- time=formatter1.format(formatter2.parse(time));
- System.out.println(time);
- }
- }