java 時間與字串之間的轉換
阿新 • • 發佈：2019-02-01
1. long字串轉換成yyyy-MM-dd HH:mm:ss格式輸出
import java.text.SimpleDateFormat; import java.util.Date; //將long字串轉換成格式時間輸出 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. 字串轉換成時間
3. 取得當前系統時間，返回yyyy-MM-dd HH:mm:ss字串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); } }
4. 取得當前系統時間，返回 HH:mm:ss字串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); } }
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);
}
}
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);
}
}