I came across a class extending java.io.File. While this looked very peculiar to me, I couldn't find any documentation of whether the File class is meant to be overridden. Note that the class is not ...

There is an existing api which writes the file to particular location and the code snippet is like below: long lastUpdatedOn = System.currentTimeMillis(); try(...

I have code that has two warnings. The code is from a commandline Expense manager project that uses a List to save and access expenses. Saving and retrieving the List is done via serialisation and ...

I had success looping through my 5 database rows and writing a CSV file, except the code that I used rewrote the file every line. I will use the CSVParser to read the file to import an activity from ...

I am pretty new to java and I am trying to import some classes into my Java project, particularly java.sql and java.io.FileWriter + java.io.BufferedWriter In my module-info.java, I have added the ...

I am a beginner in java and trying to solve the below use case. Use case : From a file(input.txt) having numbers, find out and write all the unique numbers to a different file(output.txt) without ...

There are a few related questions, but none of them quite provides the answer. I provide a Serializer object, and it has a method setOutputStream() allowing the user to supply a destination for the ...

Im trying to build my quarkus application in native mode using a dependency called EsperTech, and there is a specific snippet of code that after countless hours of debugging I discover that is causing ...

I need to use ActionUploadFileInterceptor. I implement UploadedFilesAware and need to convert UploadedFile to File. I write a method for convertUploadedFileToFile. Is there any better way to convert ...

I am thoroughly learning Spring Boot and I am learning how to upload files and in my example I will be storing the path in the database and the contents in the file system outside of what is publicly ...

I have multiple images (.jpg/.jpeg/.png) in form of Spring's MultiPartFile. I need to transform them into a single MultiPartFile with images places vertically - preferably PDF, but other image formats ...

I’m working on a character recognition project using Java and IntelliJ IDEA. My program needs to load training and testing data from CSV files, but I’m encountering a FileNotFoundException even though ...

I am trying to read several doubles from a file and save them in an array. The first number in the file is an integer, which should then determine the size of the array. This works. but when I try to ...

I got this code adapted from the official Java-Tutorial Page Console - Java Tutorial public class RedirectOutputStreamExample { public static void main(String[] args) throws InterruptedException { ...

I need to send and read some bytes from Bluetooth, like serial port. I use next code to connect device: UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); ...