Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
237 views
in Technique[技术] by (71.8m points)

java - How to set date format of a date into Date but not String?

Here's what I need to do :

I want to change the date2 into a Date but not String.

 Date date = new Date();
 DateFormat format = new SimpleDateFormat ("yyyy/MM/dd",Locale.ENGLISH);
 String date2 = format.format(date);

It does not allow me to save date2 as a Date. Someone please help me. Thanks

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

java.util.Date objects do not have a format. They just represent a date value. You cannot "set the format of a Date object" because a Date object can't store this information.

What you are asking ("how do I set the format of a Date object") is not possible, because that's not how Date objects work.

What you should do instead is just work with the Date object and at the point where it needs to be displayed, you convert it to a String in the desired format using a SimpleDateFormat object.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...