aspose file tools*
The moose likes Beginning Java and the fly likes StringUtils.isEmpty Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Spring in Action this week in the Spring forum!
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "StringUtils.isEmpty" Watch "StringUtils.isEmpty" New topic
Author

StringUtils.isEmpty

Premila Devi Dayalan
Ranch Hand

Joined: Jul 19, 2009
Posts: 40
Dear All,

Please define the meaning of ,are they define as
checks if a String contains text


Sample Code:
(!StringUtils.isEmpty(asset.getSerialNumber()))
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14269
    
  21

Note that the class StringUtils is not a class from the standard Java API. It's probably a class from some library, or even defined in your own software.

Most likely it checks if the string that you pass in is null or "". It's just a convenience method, so that you don't have to write code like this all the time:


Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 8 API documentation
Premila Devi Dayalan
Ranch Hand

Joined: Jul 19, 2009
Posts: 40
Noted.Thanks a lots.
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19720
    
  20

Empty may or may not also mean that a String only contains whitespace. If you're talking about Apache Commons Lang then they have a separate method for that, StringUtils.isBlank.


SCJP 1.4 - SCJP 6 - SCWCD 5 - OCEEJBD 6
How To Ask Questions How To Answer Questions
Premila Devi Dayalan
Ranch Hand

Joined: Jul 19, 2009
Posts: 40
True,Agree with you :Empty may or may not also mean that a String only contains whitespace. If you're talking about Apache Commons Lang then they have a separate method for that, StringUtils.isBlank.

Noted with thanks.
Premila Devi Dayalan
Ranch Hand

Joined: Jul 19, 2009
Posts: 40

Dear All,

I like to know what "messageBundle = new MessageBundle();" maintainly do in JSP.

I am confuse on the phrase of "bundle" as the code list above.

Chan Mei Ling

Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14269
    
  21

Please UseOneThreadPerQuestion, don't append a new and unrelated question to an old, existing forum topic.
Premila Devi Dayalan
Ranch Hand

Joined: Jul 19, 2009
Posts: 40
so sorry.
chan mei ling
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: StringUtils.isEmpty