I am creating Rest client using JAX RS Jersey 2. The client works but only in my IDE (IntellIJ IDEA), when I build it with Maven, using maven-assembly-plugin and run the jar it doesn’t work anymore. I get MessageBodyWriter not found for media type=application/json error. I have tried adding more depende…
How to read data from a sector using NFC on Android
I am trying to read the data from an NFC card I have for a project. It is using Mifare classic 1k and has 16 sectors. I am able to connect to the card and I’m trying to read the data (I know the data that I want is in the 2nd sector – 2nd Block). I can scan the
Finding 3 consecutive duplicate char characters in an array?
I am having some problems trying to replace 3 consecutive duplicate char characters in an array. I want to find those 3 values and replaces them with x’s. So far this is what I have: public static …
Warp using Java GDAL API
I am trying to warp a dataset using Java GDAL API. However, GDAL Java API is not documented and it is unclear which options WarpOptions take. I feed -tr 15 15 just like for gdalwarp. This results in Option not found error: What is the option to reduce/increase the resolution? Where can I get the list of possi…
Add AWS Signature Header to all rest assured requests
I’m trying to call an get api which is hosted in aws api gateway via rest-assured I’m able to sign the request and make a call. But to sign the request, I need to pass the full url to AWS to generate the Authorization Header. For Ex. If I’m going to access an an endpoint https://my-aws-api.c…
Is it possible to create a ByteArray of ByteArrays as elements in kotlin?
I have some issues with creating a ByteArray var where its elements are also ByteArray, I don’t know is it possible first ? and how to ? Answer A ByteArray is just what it sounds like, an array of bytes. If you want to hold onto multiple byte arrays you can use a generic list or array. Something like th…
Sending POST request with POSTMAN to Java REST API and getting null values in the xml response
I am creating a REST Service in Java and now I am building the post method which has 2 parameters that has to be inputted as xml in postman (for test) and get a response as xml in java and insert it in database. For starters I am trying to add the values as Query Params in POSTMAN with key
Non repeating character from a preset of characters
I would like to pick a random letter out of a list B, C, D at random order and would make sure that they do not repeat. I have tried this but it repeats the letters Answer You should check, if character already taken, for example declare another one array which contains already taken character, so if characte…
Can you set a dynamic value to @PreAuthorize in Spring?
Right now I use But I want the CREATE_USER_PRIVILEGE to come from a function(). Is this possible? Answer You could do something like this:
Create Java Apache POI Line Chart where Dates appear on the horizontal X-axis
I’m trying to create a simple line chart using the Java Apache POI which is essentially a time series, consisting of a Date and a numeric value: I would like for the dates to appear on the x-axis. However, this seems to be difficult to achieve. I can do it manually in Excel but not via the API. Answer T…