Category "java"

Why is SQL Server sequence jumping by two when fetched from Java code?

Let's say there is a sequence created on SQL Server: CREATE SEQUENCE dbo.my_seq START WITH 1 INCREMENT BY 1 NO CYCLE; GO And the following Java cod

Spring Boot can't autowire @ConfigurationProperties

Here is my FileStorageProperties class: @Data @ConfigurationProperties(prefix = "file") public class FileStorageProperties { private String uploadDir

FindIterable<Document> how to get total records in a result of a query

I was using mongo driver for java 2.x and passed to 3.1. DBCursor is deprecated and I had to use the FindIterable<Document> structure. When I perform a q

Programmatically call spring cloud config actuator/env post endpoint in spring boot application

I am using spring cloud config in my spring boot application, I am trying to update the property value through actuator/env post endpoint. Here is my code: @Ser

explanation of variable setting formula in Java required

i have this java code: weight = weight == 0 ? 1 : weight; Can anyone please explain what will happen to variable weight in all cases?

Spark on Windows - java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0

In Win10, in IntelliJ this path("C:/hive/Orders_[0-9]*.csv") works good when run as stand alone java spark job. But not working as Spring Boot spark job. Seems

JOOQ - equivalent of hibernate interceptor for populating history fields?

Environment: Spring application, using JOOQ 3.7, generating the JOOQ mapping code automatically from the schema, using Postgres as my database. I've been porti

how to read json array from servlet to jsp

JSONObject,jsonarray cannot be resolved to a type servlet: while(rs.next()) { JsonObject jo=new JsonObject(); jo.put("id",rs.getString(1));

How do I run a gui Java application headless, without control of the source code?

I want to execute a Jar file using javax swing GUI with 1 radial option, a file selector and a button. The goal is to be able to automate the jar through CLI an

Google Map is not showing in Android Studio (Only Google Icon is Visible)

I want to import Google Map SDK in my project. According to Docs I follow all the steps perfectly but when i run the project it only show an icon of google inst

Run Java Selenium tests in Azure DevOps release pipeline

I'm doing a POC for a Java project in an AzureDevops CI/CD pipeline. I created a Maven project that has Selenium tests (TestNG) that run against a demo website

Switch JDK version in Windows 10 cmd

Is there a way to change JDK version easily in cmd? like the version on mac. Change Default JDK on Mac.

How to send jsonfile in api Request

I am facing an issue while sending the json file in request for RestController, Please check the details below I have a json file , let say test.json { "Pol

TLS 1.2 + Java 1.6 + BouncyCastle

For supporting HTTPS connections through a Java 1.6 API to remote hosts using TLS 1.2, we have developed a customized TLS SocketConnection factory based on Boun

Iterate Twice in Map reduce

I have written a Reducer job in which my key and value is composite . I have a requirement of iterating twice through the values and hence trying to cache the v

MapStruct - Map Generic List to Non-Generic List containing different types

I am attempting to use MapStruct to convert between 2 internal models. These models are generated from the same specification and represent a large tree-like st

Execution Failed for task :app:compileDebugJavaWithJavac in Android Studio

I am developing an Android App in Android Studio. Not quite sure what went wrong. I was successfully building a few days ago. Any help would b

Java stream. Sum two fields in a stream of objects

I have something like this: Integer totalIncome = carDealer.getBrands().stream().mapToInt(brand -> brand.getManufacturer().getIncome()).sum(); Integer total

Missing artifact com.fasterxml.jackson.core:jackson-core:jar:1.9.11

I build a maven project and get an error on pom.xml Missing artifact in some dependencies. How can I resolve it?

Can't send mail using apache commons mail when smtp appender for log4j is configured

I have a working code that creates and sends an org.​apache.​commons.​mail.HtmlEmail (version 1.5), but that same code doesn't word when I hav