I am parsing a json file in SparkSQL in JAVA and I need to be able to access coordinates that are returned in what appears to be a WrappedArray of WrappedArrays. Here is the code: OUTPUT: WrappedArray(WrappedArray(30.74806, 40.79944)) file.json Answer Spark SQL Row has getList method, that returns a Java list…
Mockito and ReloadableResourceBundleMessageSource doesn’t go well together?
I have this simple test, it isn’t even a test as I’m simply trying to mock the messagesource. I’m getting this error: Can anyone else verify this behavior? This is a minimum spring boot skeleton test I set up because ReloadableResourceBundleMessageSource didn’t work in another project,…
How to combine 3 or more CompletionStages?
If have 2 CompletionStages, I can combine them with thenCombine method: If I have 3 or more CompletionStages, I can make a chain of thenCombine methods, but I have to use temporary objects to pass results. For example, here is a solution using Pair and Triple from the org.apache.commons.lang3.tuple package: I…
Java sorting is not the same with MySQL sorting
I need to check the sorting in the table and table content is given by MySQL. I’m trying the following: Collections.sort(sorted, String.CASE_INSENSITIVE_ORDER); And get the following result: tes3@test.com test4@test.com test5@test.com test@test.com test_user@mail.com user-og@driver.com And this is what …
Calling a method through from another controller JavaFx
RootLayoutControl.java MainApp.java ImageViewController.java Creating an image gallery, where if I call the method, handleOpen() in RootLayoutController It’ll call method, createImageView() in ImageViewController To pass the variable file to it, any suggestions on how do I do it? Answer First, the creat…
Apache commons csv skip lines
How to skip lines in input file with apache commons csv. In my file first few lines are garbage useful meta-information like date, etc. Can’t find any options for this. Answer Use FileReader.readLine() before starting the for-loop. Your example:
How to sort Integer digits in ascending order without Strings or Arrays?
I’m trying to sort the digits of an integer of any length in ascending order without using Strings, arrays or recursion. Example: I have already figured out how to get each digit of the integer with modulus division: but I don’t know how to order the digits without an array. Don’t worry abou…
/bin/bash: /bin/java: No such file or directory error in Yarn apps in MacOS
I was trying to run a simple wordcount MapReduce Program using Java 1.7 SDK and Hadoop2.7.1 on Mac OS X EL Captain 10.11 and I am getting the following error message in my container log “stderr” /bin/bash: /bin/java: No such file or directory Application Log- Command I am Running My ENV variable a…
Method Overloading – Java
Actual Question: If it calls (1) then how can I make it so that it calls (2) ? I have following methods signature Somewhere I make a call like myMethod(new String(“name”), new MyClass()); Which overloaded method will be called ? If it calls (1) then how can I make it so that it calls (2) ? Answer …
SonarQube with Radar-Netbeans Plugin Exception
I am trying to analyze my code with radar-netbeans 2.4 plug-in on my 8.0.2 NetBeans IDE, at first my sonar-runner wasn’t even executing, but after I read this post: “Netbeans Radar Plugin Configuration”, I was able to get my sonar-runner to execute until I got this exception: Is there someth…