I have csv file with about 5000 rows and 950 columns. First I load it to DataFrame: After that I search all string columns and want to index them. For that I create indexers for each string column and create pipeline But when I try to transform my initial dataframe with this pipeline I get StackOverflowError …
Is there a way I can gray out an ImageButton in Android without maintaining a separate gray copy of the original Image?
I am trying to have an ImageButton that initially has a gray effect on it & turns into its original color when selected. I’m trying to achieve something like . I know this can be done in CSS, but was wondering if any Android attribute / function equivalent to it existed. I read a post here that seem…
mock resttemplate to test a service as restFul client
I have a service class, written in spring, with some methods. One of this acts as a restful consumer like below: I want to use Mockito to mock my service, but every method that interacts with restful server instance a new RestTemplate. I’ve to create a static class to Inject it into my service? Answer O…
What is ‘scope’ in Java?
I just started coding. I want to use a switch statement twice for the same variable, and I was told that to do this the variable would have to be ‘in scope’. Being a beginner, I have no idea what that means. So what does being in scope mean? And, if a variable isn’t in scope, how do I make
Using @RequestParam for multipartfile is a right way?
I’m developing a spring mvc application and I want to handle multipart request in my controller. In the request I’m passing MultiPartFile also, currently I’m using @RequestParam to get the file parameter, the method look like, Above code works well in my service and the file is getting on th…
Cannot import org.h2.server.web.WebServlet
I am trying to configure my spring boot application to use h2 console. I found some articles and all of them use webServlet. But I can not import the class although I have h2 dependency added in my pom.xml. I get this error message can not resolve the symbol WebServlet. My import line Below is my pom.xml and …
Java Using proxy settings in jar
I’m doing a webscraping with jar i created, which uses a proxy. My question is that i have large project where more webscrapers will work in paralel. Using this code: will affect the others webscrapers? Answer If you run them as separate processes, then each process has its own system properties. If you…
Android Vector Icon – Add a border
I’m wondering if it may be possible to add a white border to a Android Vector Icon (xml format). I’ve tried to overlap a bigger version of the icon itself, but the result it’s not as I was expecting (as you can see in the attached images). Is there a way to modify the xml to enlarge a bit th…
Promise through JSONException
I have the following code with which I’m trying to get all my versions from jira with a jira API: This code thow me an exception that I don’t understand: And if you follow the line where is showing me the reason, is returning me the JSONArray that I need to get in order to achieve my goal. So, the
No Java folder located in Library despite JDK installation
Currently running OSX El Capitan on a recently set up computer. I’m trying to set up Java’s unlimited crypto policy which requires me to modify some files within my current jre, but I can’t find the Java folder that is supposed to be located within Library. I’ve run /usr/libexec/java_h…