Is there a global Jackson setting/configuration so that I do not have to annotate every class with @JsonIgnoreProperties(unknown=true)? Answer This should do the job: See the APIs for ObjectMapper and DeserializationFeature for more information.
Tag: java
How to put variable in OGNL tag
In this code questions is a list which contain questions object with In my program, I will make it appears in browser like The list may contain multiple question objects so I made it to show 5 question per page. My problem is (for example) the user may go from page 4 to page 2 and I want to refill
Can anyone explain me what is state and mutable data?
In computer science, functional programming is a programming paradigm that treats computation as the evaluation of mathematical functions and avoids state and mutable data. http://en.wikipedia.org/wiki/Functional_programming Can anyone explain me what is state and mutable data? Can anyone give me examples in …
Hibernate Error: a different object with the same identifier value was already associated with the session
I essentially have some objects in this configuration (the real data model is a bit more complex): A has a many-to-many relationship with B. (B has inverse=”true”) B has a many-to-one relationship with C. (I have cascade set to “save-update”) C is a kind of type/category table. Also, I…
Use Exchange Property in Camel DSL “to”
I want to set a property on a Camel Exchange and then use this property when saving the file. In my camel dsl I have the following: The file is being saved as: My processor is as follows: Any thoughts on what may be going wrong or how I can achieve this? Answer The to in the Camel is not
String.split() at a meta character +
I’m making a simple program that will deal with equations from a String input of the equation When I run it, however, I get an exception because of trying to replace the ” +” with a ” +” so i can split the string at the spaces. How should I go about using the string replaceAll me…
Getting java.lang.IllegalArgumentException when trying to make a dynamic HTTP endpoint in Mule
I got an HTTP outbound-endpoint that does a GET method to an specific URL, thing is that if i add a variable in the path URL it will throw an exception… i believe this is not being supported. This is my FLOW: This is the exception stacktrace Tried searching a lot in Google but i got no clue on what̵…
Convert Java Number to BigDecimal : best way
I am looking for the best way to convert a Number to a BigDecimal. Is this good enough? Can we lose precision with the toString() method ? Answer This is fine, remember that using the constructor of BigDecimal to declare a value can be dangerous when it’s not of type String. Consider the below… Th…
How to fix error YouTubeInitializationResult.SERVICE_INVALID
I try use Youtube API in my Android App, my app looke like this: But when i install on my real device, I get a error : Initialization Fail- Service invalid I have no idea to fix this error. Let me hear your idea, thank you 🙂 Answer The Android YouTube API docs at: https://developers.google.com/youtube/android…
How to find an object in a Set of custom objects
The code below contains a Set of CustomObjects. I am trying to search an object in it. I’ve overridden equals() method to match it with a specific field, am not able to understand why is it not able to find it. “XXtNot FoundtXX” is getting printed instead of “Found!!” import java…