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 What am I doing
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 seems to suggest
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 One of the benefits from
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 the server side. Now somewhere I saw that in cases that
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 my application.properties
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 are running them in one process as
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 the
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_home which shows me /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home however within my Library folder, there is