I’ve run into a strange issue with unit testing the following jersey client call: PostBody is a MultivaluedMap. The unit test verifies fine the accept and type calls but fails on the post one with this exception: Here’s the test code: Can you see anything wrong with this code? Answer Yes. You̵…
Convert RGB to HSV in android
I want to get the ARGB values from a pixel and convert to HSV and then set the pixel with the new values. I don’t fully understand how to do that. Can anyone help me? Answer Let’s say you have a Bitmap object and x and y co-ordinates. You can get the color from the bitmap as a 32-bit value
ArrayOutOfBoundsException on PreparedStatement
I’m at a loss here, can anyone see what’s wrong with this code? I’m using sqlite with this driver: https://bitbucket.org/xerial/sqlite-jdbc/downloads edit: fixed my initial error but have a similar one I get an exception at this line: stmt.setLong(1, tweet.getID()); The exception: This is ho…
Java Pyramid output
Hi all I am trying to create a pyramid program that asks a user for int between 1-15. When I enter 1-9 it creates a perfect pyramid. But if I enter 10-15 the line down the middle goes to right with each number pass 10 no longer making a pyramid. } Thank you for your help! Answer You can still
Maven Failsafe Plugin is always skipping integration tests
I am attempting to configure my Maven project to have unit tests and integration tests. The unit tests are already working fine using the Maven Surefire plugin and are named according to the pattern *Test.java. After adding the Failsafe plugin, like so: I added an integration test named SomeTestIT.java. Howev…
Default constructor cannot handle exception type IOException thrown by implicit super constructor. Must define an explicit constructor
I have two java classes Configuration.java and login.java Configuration.java login.java … can anyone help me please to resolve the error Answer Also change your Configuration file like this:
How to inject multiple JPA EntityManager (persistence units) when using Spring
I need to use one database for queries (non-modifying) and one for commands (modifying). I am using Spring Data JPA, so I have two configuration classes: In my repository I sometimes need to decide with EntityManager to use like so: I am using persistence unit’s name as defined in my persistence.xml: Sp…
How to change the JDK for a Jenkins job?
I have imported the jenkins jobs from existing jenkins server from another machine. But the problem is, it has the JDK referenced as per the old machines and I want to change it to use the JDK configured in my new jenkins. But I am unable to find any way of doing this. So, please if you have come across
Java 8 LocalDate Jackson format
For java.util.Date when I do then in JSON request when I send it works. How should I do this for Java 8’s LocalDate field?? I tried having It didn’t work. Can someone please let me know what’s the right way to do this.. Below are dependencies Answer I was never able to get this to work simpl…
Java user input, declare as int?
I’m new to Java and I want to make a program that calculates price of donuts by typing in how much donuts you want and then telling you what is the price depending on the number of donuts you want. This is the code What am I missing in my code? I am getting an error in the last line.