Category "java"

Unable to send the logs to Splunk Enterprise local using log4j2

I'm using log4j2 and splunk within java to send logs into my Splunk Enterprise HEC (HTTP Event Collector) Splunk Enterprise is running in my local machine. I'm

Can't change backgroundcolor in an excel cell using XSSFCellStyle

Here you are a minimal, reproducible example with the error. I have a class CreateXSSFColor. Firstly, I define the styles estiloBasico and celdaVaciaGris. When

Firebase Android FCM INVALID_SENDER when trying to get token

I created a google-services.json file and added to my android project but when I tried to get a token I received this exception: { Java.IO.IOException: java.uti

How to get remaining time of the day in java?

I would like to calculate the time remaining for next day 00:00:00 from the current date time. For e.g. time difference between 2022-05-07T05:49:41.883807900Z

Why do I subtract 1 from the element on an even position? I need only odd positions (odd indexes) Java

I need your help. I have the task : Given a List of Integer numbers, return the average of all odd numbers from the list or throw NoSuchElementException. But be

com.google.guava version upgrade from 20.0 to 30.0-jre

we are working on spring3 application so due to veracode issues i am trying to upgrade library com.google.guava 20.0 to 30.0-jre, getting below errors Error : 2

Spring Boot: Optional mapping of request parameters to POJO

I'm trying to map request parameters of a controller method into a POJO object, but only if any of its fields are present. However, I can't seem to find a way t

ILLegalAccessError tried to access method org.mockito.internal.handler.MockHandlerFactory

I am trying to mock a static method of InetAddress class using PowerMockito but I am getting the below error IllegalAccessError: Tried to access method org.mock

how to coverage write file func in java

I made a simple function? to which I give a list of objects and then get their headers (just some strings), then sort and write to a file when i made a test for

Java - Update Elements in Large XML Files

I work with very large XML datasets (1 GB+) and need to backtrack and update specific elements per node, depending on the values of other elements that follow.

best way to add a spring boot web application with JSPs to a docker container?

so i have a spring boot web application, it uses JSPs, and im supposed to put it in a container . my question is what is the best way ? ive tried to copy the pr

Are there any Java Class Library "header files" containing all method descriptors in the standard library?

In order to create a valid .class file, every method has to have a full internal name and type descriptors associated with it. When procedurally creating these,

Set of functions using Function interface [closed]

Let there be a set A = {1,2,3}. The goal is to compute all bijections on AxA. It should be of type Set<Function<T,T>> so that in t

Eclipse marvin classpath

I'll keep it short. I have a project in eclipse using Marvin, the Marvin's jar is added correctly in the build path, classpath. The problem is, whenever me or s

How do the dependency paths work in Java .classpath file?

In the Java .classpath file, I see a lot of dependency paths, something like this: <classpathentry kind="lib" path="/a/b/c/d/library.jar"/> Are these pat

What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?

What does ArrayIndexOutOfBoundsException mean and how do I get rid of it? Here is a code sample that triggers the exception: String[] names = { "tom", "bob",

Why did eclipse build me 2 identical source folders?

Yesterday I was working on my project, and suddenly eclipse built me 2 identical source folder.. i dont know what happend. but i hope you cant help me to delete

Hide RecyclerView until List is sorted

When my RecyclerView loads it shows the unsorted list for a few milliseconds and then switches to the sorted list. Here is a video what it looks like: https://d

Android studio balance with timer (java)

I want to make on button press to start a timer and increment at same time , so let's say the balance is 0.00 i want it when the button is clicked to increase b

Spring Data JPA: how to make one to one relationship with SQL Server JSON column

Spring Data JPA: how to make one to one relationship with SQL Server JSON column? Class EntityA { long id; @Type(type = "json") @Column(columnDefinition =