Questions tagged [java]

Software regarding Java development tools and libraries for the Java programming language.

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Data mapping tools like dataweave

I’m planning to build a data mapper (Java object <-> XML <-> JSON, etc) as robust as DataWeave and more advanced than AtlasMap to support my integration workflow. Which basically can parse ...
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Is there a more reliable pure Java based library than HtmlUnit or ui4j for returning and manipulating JavaScript rendered web pages?

I need a headless browser, or similar, pure Java library like HtmlUnit that supports JavaScript to reliably render all web page content just as a manual browser would do. Although HtmlUnit claims to ...
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Library recommendation: best Java/Spring Boot library to create a TCP server?

I am looking for a library to create a TCP server for a Java/Spring Boot application. The scale I'm looking at is serving around 5000 requests per minute.
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Is there something similar to PostSharp logging, but for Java?

Using PostSharp, one can add and customize logging to an existing .NET project. For example you can log the entry and exit of every method or all methods except getters and setters, along with ...
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Memory-optimal base64 encoding Java library

Is there any trust-worthy library in Java that encodes a byte array to base64 without using intermediate structures, where you provide the output byte array as well as an offset for that output array ...
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Could you please recommend software/library/module that can do abstraction of connecting and working with databases maybe with CRUD Interface?

I have spent several days on web, but i am unable to find answer to my question: Currently we are looking for software in form of (preferably) NodeJS module/library. The library should abstract tasks ...
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Chatbot or code-generation tool to support config generation for approx. 15 languages/frameworks

Thing is I'm dealing with plenty of bad implementations of some mobile library almost every day. Users who download and use it never read docs/instructions/whatsoever and then configure it improperly ...
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dynamic creation of UML/SysML

I'm working on a Kotlin project where we need to create sysml diagrams dynamically. We get the data via Json, describing the fields of the components, it childs and relations. Basically we need to ...
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generating excel/text file with all table names, their columns and the corresponding Java entities and fields

Based on photo_1 with java code I would like to generate excel file as in the phote_2. Because I have lots of entities and writing it by hand would take an awfully long time. Is there a good way that ...
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A Library for text based UI with menu facility in JAVA

I searched for a while for the best Java library for text interface with menu features and I found charva-lanterna. Unfortunately, it has not been updated since 2016 and it has the problem of hanging ...
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Code Validator for different programming languages

Does anybody know any validators for different programming languages? I'm trying to implement it to my web app and I'll need a code validator. I saw fbinfer for Java, C and C++ (but it's not supported ...
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Are there any ways to convert image files (jpg,png) to WebP programmatically in Android?

I am developing a social media app in Android Studio with Java and I need ways to convert some images to WebP to reduce size of posts. Do you have any suggestions? I have tried in the past to use APIs ...
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Java testing framework for testing new shim gives same results as old api?

I'm working to take an old no longer supported, but still heavily used throughout my company, library and create a replacement shim that passes all the real work down to a different library that is ...
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Java JSON/XML parser with efficient node access

I wonder if there might be a DOM-like JSON/XML parser + generator library which allows one to search the in-memory nodes (after parsing / before unparsing) by name in an efficient way (better than ...
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Big Data: A Distributed File System that Scales to Billions of Objects?

I'm developing a distributed web crawling application that requires 1) frequent access to file system - lots of updates/reads/writes 2) stores billions (or tens of billions) of little files Most ...
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Need API based on Java to validate language of the entered text

I have an API in JAVA where the user will select one language from 50 languages and enter a text in that language. I need some api suggestion which can validate that the text entered by user exists in ...
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Java library for extracting and validating digital signatures in any file format

I am writing a Java program which will need to validate CMS digital signatures on files in a variety of different formats: ZIP docx/xlsx PDF Any file with a detached signature I'd like a universal ...
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Is there a Linux and Mac equivalent of Launch4j that's free?

I think this software is great but I can't seem to find anything that does the same thing for Mac or Linux builds. Here's the software if you aren't familiar with it. Launch4j The reason why I want to ...
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I need to navigate DB state using JPA definitions for viewing data

Requirement Summary View DB data (row content) and tree-navigate along references (foreign keys) while presenting their corresponding JPA (Java Persistence API) definitions / metadata Use Cases As a ...
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Automate use of vim/tmux on console

I want to learn vim to accomplish tiny tasks during coding (mainly Java, Javascript, Typescript) on elementaryOS (based on Ubuntu) - quicker (one example task which I do often: adding TODOs on a ...
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Is there an observable maps Java library/framework?

I was wondering if there is a Java framework/library providing out-of-the-box functionality for observable collections (mainly maps)? For example, a subscriber to a map would receive - in case of ...
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Running Java computations on the GPU on an m1 Mac?

I develop and run scientific computations in java on my MacBook Pro. I'd like to start learning gpu programming in java so I can optimize some of my pipelines. Ideally I can start with a high-level ...
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What framework is best for a 2D top-down shooter in Java?

I'm creating a roguelike shooter in Java where the bullets are projectiles (not hitscan), the camera moves with player movement, so that the player character is always in the middle, and where I'm ...
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UFT One alternatives for testing Java swing desktop application?

I'm pretty new to test automation, and we have a requirement to build an automated test suite against a desktop application which is built with Java swing. We're currently using UFT one so that we can ...
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Can any libraries extract picture(s), if any, from an image of a page of text

I have jpeg images of pages of text, some of which have pictures within their layout. I don't care about OCR of the text, but I would like to be able to extract the pictures from the page image for ...
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Is there an app where I can construct a function curve and then I get the formulas or equivalent program code of the piecewise-defined function?

Sometimes one need a mathematical function - for example for easing-function, or transition function, filter, etc - which properties are known, can be drawn or constructed by segments, can be defined ...
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OAuth 1.0 signature generator for Java

I am amazed how hard it is to find a good Java OAuth 1.0 signature generator. I am kind of looking for a large company one if possible: like Apache, Google, etc. Google had one, but it was ...
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Drop-in disk-based (not limited by RAM) Java map replacement

I have asked a question in Software Engineering Stack Exchange. I am refactoring a project which loads its all data from the mongo to the Java HashMap. The system writes both in the map and the mongo ...
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Looking for a good open source tool that could extract the calling relationship and dependencies for Java systems?

I am currently looking for a open source tool that could extract the calling relationship and dependencies of a java system ? I am wondering if there is a tool which could show all the calling ...
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assigned locations to users based on first come first serve basis

We have a project which is build on Django rest framework. Now our concern is we need to serve location details one by one to users from list of locations. Once list is empty then we will start again ...
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Disposable Email API for Selenium automated testing

I am looking to implement an Email API for my UI automated tests written in Java with Selenium. Are there any recommendations of an email client in order to do this? From what i found in my research ...
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Library for handling paging, error recovery etc. when working with web/remote APIs

When working with remote or web APIs (e.g. REST APIs), there can be multiple challenges like: Throttling and error recovery: If sending too many automatic requests, you may either exceed your granted ...
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RestAssured alternative for Java that allows for customization of TLS version?

Currently RestAssured doesn't have a way to force a TLS version when making a request without using a deprecated library (SslSocketFactory), are there any other REST API testing frameworks that could ...
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Detect language by text in Java

How to find the language of an input string. For example: getLanguage("Hello world") - return en. getLanguage("Hola Mundo") - return es I know it might not be accurate in 100%.
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Is there a library in Java where I can examine connection details in code, similar to wireshark?

I have a manual test case that uses Wireshark to examine the connection details of a TLS handshake. We're looking to automate this test and was wondering if there are any existing libraries in Java ...
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Software that generates some JUnit code

I'd like a program that generates some JUnits for me. Not necessarily the full JUnit but at least more of a start. I work for a company that believes in near 100% JUnit code coverage. If I add an ...
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Java library to create a PDF with address positioned to be visible through a C5 envelope

I'm working with an automatic mailing service, which accepts a PDF document, prints it, puts it in a post envelope and drops it in the postal service mail box for shipping. My challenge is that this ...
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Lightweight thread-safe persistent queue for Java

I'm looking for some fast lightweight thread-safe implementation of a persistent queue which can be easily embedded into a Java service. Something like https://github.com/bulldog2011/bigqueue but with ...
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Java MANIFEST.MF long lines tolerant parser

Does anyone know of a MANIFEST.MF parser library which tolerates long lines over the 72 character limit? I would also need a serialization back to file.
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Which JCurses package (if either) should I use?

I'm looking for a way to interface Java with Curses (ideally, both nCurses and xCurses); I see that there's a Java extension package called JCurses, but when I looked it up to download it, I see two ...
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What framework can help with code coverage using service virtualization for REST template classes?

I am working on a Spring Boot Application which uses Camel for EIP. Also there are few rest template classes and services. So I was using Mockito and JUnit to Unit test these classes. But my teammate ...
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Java Library to Parse MHT/MHTML Files?

I am looking for a java library that can parse and modify an MHT file, basically I would like to search inside an MHT document for a words, inside a certain paragraph, and replace them. Any ...
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DMN/FEEL (OMG) Implementation in Java

Is there any implementation of Friendly Enough Expression Language or any sub-parts of Decision Modeling Notation (DMN) defined by Object Modeling Group (OMG) in Java?
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Open-Source Java XML-RPC client

I am looking for an open source XML-RPC client for my application to use to talk to XML-RPC servers. The application currently uses Apache XML-RPC 3.1.3, however this has several CVEs recorded against ...
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What should I use for a Minecraft bot?

Previously asked on StackOverflow but was closed for being off topic/not focused enough. I hope this is the right place for this. Essentially I want to use a Minecraft bot to take pictures and collect ...
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Free Java library to convert various (as many file types as possible) to PDF

I'm looking for a free Java library to convert various file types (as many file types as possible) to PDF. By various file types, I mean at least most images, Microsoft office documents (at least Word ...
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What GUI library should I use to create a chat application in Java?

I'm trying to create a chat application in java, I've done a lot of the backend in spring boot (its an API) but I'mnot sure what I should do for the GUI lib. I tried JavaFX and me and my other dev ...
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Need CLI (command line interface) tool to convert PLT file to PDF file

We want to convert PLT file to PDF file in the background. Our appplication is java based and we are looking for any tool which we can use in the background which provides command line interface to ...
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Opensource e-wallet solution Java

I'm looking for a stand alone open-source free e-wallet solution or application for my project. A solution can be run as standalone application. Scenario is I have multiple java spring boot based ...
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Report Tool With Designer - Java Web Application

I want to integrate reports in java web application. The reporting design should be done by the open source report designer by me or the customer on their end and use it in the application. When i ...
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