I have a node js server implementation and I would like to send some values to an Android (Java) client. The method of the node js server is as follows: I would like to send the values score (integer), days_total (integer), days_count (integer), minutes_count (long), duration_enabled (long), duration_disabled…
H2 DB Incorrect special characters sorting
I’m trying to sort column data in my h2 database, but it isn’t correct. I think that change of collation may help. I tried to set collation in datasource url in many ways e.g.: spring.datasource.url = jdbc:h2:mem:testdb;COLLATION=’ENGLISH’ spring.datasource.url = jdbc:h2:mem:testdb;SET…
How do i get Scilab 6.1.0 working on ubuntu 20.04?
I’ve installed the ubuntu repo of Scilab 6.1.0 and ive been trying to run it, The error message i get is I have tried: – running from the cli – running from the launcher the cli version works have gone to the forums and checked for the different solutions – deleting the SCIHOME directo…
Does commons-io’s FileUtils.readFileToByteArray close the newly created stream?
I’m creating a program that produce checksums for each files in directory. I’m using FileUtils.readFileToByteArray which internally creates a new FileInputStream. The problem is I didn’t find where the stream is closed and wondering about a possible memory leak. So I’m asking: does thi…
SpringMVC, why ‘@RequestBody String body’ stops working after adding MappingJackson2HttpMessageConverter
need some help with jackson2 and springMvc. Issue: when adding MappingJackson2HttpMessageConverter jsons fail to parse (previously they did parse) with error below. I have following @Controller method in code: And it have been working just fine until I’ve decided to add MappingJackson2HttpMessageConvert…
Apache POI – Is there a way to count occurrence of a string in a pivot table?
I am using version 4.1.2 of Apache Poi and I have this dataset: I’m trying to create a pivot table using Apache POI that groups and counts the occurrence of strings from the 2nd column. I’ve tried: But it somehow still counts the occurrences from the first column. The pivot table I’m trying …
Stop current running Spring boot in linux
i am running a springboot application in linux.To run this springboot we use below command. This spring boot application makes an endpoint available which is then used by other services. Now when the new version of .jar is available i have to stop the current running .jar and again run the above mentioned com…
Cache-Control : no-cache
I tried to build an app in android studio which does json parsing from a URL server with ports (example: http://xxx.xxx.xxx.xxx:xxxx). So I found 3 methods such as asynctask, volley and okhttp. But the problem is everytime I parse it with these methods, the same exception always occurred. java.net.ProtocalExc…
Problem in “between two set” hackerrank problem
Problem:You will be given two arrays of integers and asked to determine all integers that satisfy the following two conditions: The elements of the first array are all factors of the integer being considered The integer being considered is a factor of all elements of the second array These numbers are referre…
TCP connection between 2 Virtual Box machines on 1 local host [closed]
I wrote a Client/Server app in java using TCP connection. For the Client to run I need to provide it with IP of the server. It works well on two consoles on one Windows with IP = localhost, but not on …