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How to tell Jackson to ignore a field during serialization if its value is null?
...ter so that the attribute would be shown if the value is not null.
A more complete example is available in my answer to How to prevent null values inside a Map and null fields inside a bean from getting serialized through Jackson.
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How to create a generic array in Java?
...")
final E e = (E) a[i];
return e;
}
}
Note that the component type of the array should be the erasure of the type parameter:
public class GenSet<E extends Foo> { // E has an upper bound of Foo
private Foo[] a; // E erases to Foo, so use Foo[]
public GenSet(int...
pass string parameter in an onclick function
... edited Jul 31 '18 at 10:34
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answered Mar 10 '12 at 2:41
daviddavid
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How to detect when facebook's FB.init is complete
...init({ appId : '*************', channelUrl : 'http://www.mydomain.com', status : true, // check login status cookie : true, // enable cookies to allow the server to access the session oauth : true, // enable OAuth 2.0 xfbml : true // parse XFBML }); setTimeout(f...
How to install a gem or update RubyGems if it fails with a permissions error
...r steps to try to fix the problem, but now when I do irb or ruby -v, I get command not found. What's going on and is there a fix" and this just adds more weight to why people shouldn't use sudo or chown. Sigh....
– the Tin Man
Mar 24 '14 at 15:41
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How to save and restore multiple different sessions in Vim?
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Thanks @Benj. I'm new in vim. How can I 'source' in the command line?
– Jogusa
Oct 29 '09 at 10:17
1
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Retrieving the last record in each group - MySQL
...150) NOT NULL default '',
`AnswerCount` int(11) NOT NULL default '0',
`CommentCount` int(11) NOT NULL default '0',
`FavoriteCount` int(11) NOT NULL default '0',
`ClosedDate` datetime default NULL,
PRIMARY KEY (`PostId`),
UNIQUE KEY `PostId` (`PostId`),
KEY `PostTypeId` (`PostTypeId`),...
How to get the command line args passed to a running process on unix/linux systems?
On SunOS there is pargs command that prints the command line arguments passed to the running process.
13 Answers
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Maven plugins can not be found in IntelliJ
...Preferences. (Click on IntelliJ IDEA on the menu bar-> Preferences) or (Command⌘+,) ->(Same as above)Build, Execution, Deployment -> Build Tools -> Maven.
– Ayush Chaurasia
yesterday
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Another Repeated column in mapping for entity error
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How do you handle the case where you have a @EmbeddedId composite key between customerId and another field of the Customer class? In this case I need both repeated column in the mapping, am i right?
– louis amoros
Apr 10 '17 at 9:55
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