Questions tagged [java]

libraries for Java and Java development tools

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1answer
755 views

Library for Generating CRUD Pages in Java Web Applications

I've had a bit of a play with Spring Roo recently and I like the feature that generates CRUD pages automatically for particular objects. In all my years developing JVM-based web applications I've ...
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0answers
205 views

Java library for macrobenchmarks

I am working on a macro benchmark (the Train Benchmark) in Java to evaluate the performance of various database management systems. I took some steps for eliminating potential threats to its validity: ...
5
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0answers
202 views

JDBC Connection Pool

What is the state-of-the-art in JDBC connection pool libraries? Years ago the Tomcat JDBC Connection Pool library was developed as an alternative for highly-threaded environments because of ...
5
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0answers
3k views

An alternative to Apache Tika in Java?

Do you know an alternative to Apache Tika in Java? This library is giving me problems and I need to resolve this ASAP. I will appreciate your advice. Edit: Apache Tika is a library that is used for ...
5
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0answers
56 views

Java library that provides a Mac OS X-style color picker?

Is there a library/SDK/etc. that brings the Mac OS X color picker to Java? I think it's the best color picker out there, so I'd love to use it in my cross-platform applications.
5
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0answers
942 views

Android Virtual Microphone

I would like to know whether some tool exists to create a virtual microphone on Android. For example, when I connect my headset, my phone uses the microphone on the headset. Instead, I want to be ...
5
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0answers
85 views

Java lightweight library for QBE (non-JPA) open source / free?

I am looking for a freeware or open source java library that, given a JDBC connection, it can assemble/execute a QBE query, hopefully, using a POJO or HashMap as example. It does not have to deal ...
4
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2answers
733 views

Java data structure to store latitude-longitude points, and retrieve them by area

I want to memorize geographical points for fast retrieval: I store a few {latitude, longitude, Java object} I query for all objects contained within n kilometers of a particular latitude, longitude ...
4
votes
3answers
692 views

Open Source tool to construct ETL parser

I need to create ETL parser in Java. Is there any opensource tool or framework available to build ETL parser for unstructured data. I want to create a parser and need to define format in properties ...
4
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4answers
768 views

Collaborative Real-time Java Coding and Compiling

I now this question has been asked somewhat similarly before, but I have done hours of research into some sort of application, whether browser based or not, that will allow multiple people (ie my ...
4
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2answers
2k views

Java library to transform kanji/katakana/hiragana to romaji

The Japanese language is mostly a combination of 3 alphabets, and it can be transliterated to romaji (Latin script). There are various strategies, Revised Hepburn would be ideal here. Example: ローマ字 → ...
4
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2answers
1k views

Is there Java Gimp API for manipulating images

Is there any java Gimp library to control, resize, or reduce image size (MB to KB) ? I'm looking for something like JGIMP. I tried to work on JGIMP , but it was an older version, and failed to ...
4
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2answers
2k views

Java Open Source Imaging Library as a substitute to the JAI

I am currently looking for an open source alternative to the Java Advanced Imaging API. I need a plugin for the javax.imageio package, and I need the functionalities that would other be in the JAI. At ...
4
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2answers
179 views

Embbeded HTTP Server for pluggable java web application

I want to develop a Java Web application with a similar architecture to Jenkins. It shall ship with an embedded server, so that it can be started like java -jar myapp.war We are using Jenkins for a ...
4
votes
1answer
603 views

Headless browser for Java that can execute JavaScript on a page

We have a JavaScript file that our customers are installing on their site to capture certain behaviors and emit events when certain actions are taken. We'd like to have a utility on our backend to ...
4
votes
2answers
4k views

Java library to convert RTF file to DOCX/PDF file

I want to convert RTF file to PDF using java library. What are good open source java libraries which can be used to convert RTF to PDF file? I don`t want to use OpenOffice JodConverter library as we ...
4
votes
3answers
374 views

An Open-Source Java templating engine with inheritance

I'm developing a Java-servlet based project and I'm a newbie in this platform. I usually use Django, that has an awesome default template engine. Is there something similar for Java? PS: Template ...
4
votes
1answer
846 views

WebP library for Java?

Is there a library in java for producing/consuming image files in the WebP format? The libraries I found online are either libwebp written in C, or its JNI bindings in Java. Is there anything in pure ...
4
votes
1answer
619 views

Open-source Java-based scheduler with web user interface

I have an application that requires batch job scheduling on the order of maybe 100 jobs per day. I do not require (yet) that the jobs be chained together: right now each is independent of the others. ...
4
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2answers
91 views

Database software recommendation [closed]

We are a small construction company that currently has a very old, outdated database system that has been written over the past 20 years in Visual FoxPro. I have now been designated with the task of ...
4
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3answers
636 views

Where can I find a Nashorn browser?

I'm looking for a browser that uses the Nashorn engine (article) instead of SpiderMonkey or V8, etc. Do any browsers use this engine yet?
4
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3answers
153 views

Java PDF library

I'm looking a free library for commercial use that allows me to generate PDF (from code) and add a HTML text (from HTML editor java-fx). I created my app on itext 7 and it works good but I have to ...
4
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1answer
2k views

Java video manipulation library

I'm searching for a Java library that allows me to do some video manipulation like splitting a video in many parts and converting it into some other formats. I've found out that there are already ...
4
votes
1answer
1k views

Is there a library that automatically parses time stamps from text?

To start, I have used Splunk for log data analysis. One of the great features about Splunk is that it can automatically detect the date from a log event, no matter what format you give it (it is 99% ...
4
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1answer
46 views

Modern (2015) pet shop store to compare technology stacks

In 2001, Sun created the Pet Shop Store application. The application was implemented on many technology stacks (even .NET later) so developers could compare mesaures like development time and learning ...
4
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1answer
1k views

Gratis SMS gateway

I need an SMS gateway software like Ozeki NG. I am testing this product right now, but before investing in a commercial product I would like to map the free alternatives. Kannel was recommended for ...
4
votes
1answer
732 views

Java library for parsing Javadoc comments

I would like to be able to programmatically convert Javadoc comments (such as those in the generated code of LWJGL) to other formats (such as Markdown). This would allow me to do things like ...
4
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0answers
174 views

Audio editor written in Java

I'm looking for an audio editor written entirely in Java, without any dependencies that have to be installed. A self-contained JAR file that I can run from anywhere, even on machines that do not ...
4
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0answers
264 views

Which SQL engine atop Hadoop?

Since Hadoop came out, there have been various commercial and/or open-source attempts to expose some compatibility with SQL. I am seeking one which is good for low-latency querying, and supports the ...
4
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0answers
2k views

Java Codec API to convert JPEG frames/images to MPEG video

I need your help & wisdom for selecting a Java Media Codec Library. Requirements: Codec most be 100% Java implementation (No native dependencies) Codec most be able to convert JPEG images to all ...
4
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0answers
146 views

Self generated java file implementing STAX to parse XML files using available xsd

I have about 100 xml files each around 5MB. I have an xsd. Is there a way to generate a java class that will parse these files using the xsd I have ? Is there any tool that can do this? or will I ...
4
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0answers
68 views

Common regex generation java library

I'm looking for a Java library which can generate common regular expressions, such as: numbers of n digits alphanumeric sequences (no special chars) URLs email addresses IP addresses etc. The ...
4
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0answers
71 views

Class relationship “overviewer”/“explorer” for Java code

I'm looking for a tool for rapidly visualizing structural relationships in Java code. The hard requirements are: generates structural diagrams of selected classes and packages, the diagrams are ...
3
votes
2answers
309 views

Stable free (open source) Java PDF library for paragraphs of text only

In a project I am working on, I have a requirement to generate a PDF. This PDF will contain text only, and the contents of the text will be rather variable. Most of the text should be printed in ...
3
votes
3answers
130 views

Java object cache (in-memory)

I'm looking for recommendations for libraries that help me create an efficient and fast object value cache in Java. My needs are as follows: Write: There are up to like 50000 writes per second to ...
3
votes
2answers
167 views

Recommended software for an Intranet?

We're on a governamental organization with about 150-160 users. This organization is spread between a central office, and 10 small delegations, with 4-5 workers on each delegation. We're looking for ...
3
votes
1answer
1k views

WhatsApp API / Library / service for private smart home project

I am looking for a way to receive WhatsApp messages on an Arduino or Raspberry Pi which also should allow me to detect the sender's number and message. Several companies in Germany advertise with a ...
3
votes
2answers
425 views

Tool to programmatically draw logic circuits into PDF

I'm looking for a (preferably open source) tool to visualize logic circuits such as this with the following constraints: The diagram description should be given programmatically (through java or by ...
3
votes
2answers
504 views

Java embedded read-only key-value store for ~1 million records

I have a lookup table in MongoDB - about 1 million records - JSON dump is just over 200MB. I'd like to get rid of the requirement for MongoDB and use something embedded in my webapp (running on ...
3
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2answers
2k views

Java equivalent to NumPy

In the Python world, if I have some number crunching to do, I use NumPy and it's friends like Matplotlib. Now I have an Android/Java application and the need arises to crunch some numbers and I am ...
3
votes
3answers
131 views

Bug/issue tracker for small extent team

What issue/bug tracker would you recommend for a small extent company? Approx. (5-7 people). My preference is lightweight, with compatibility of all operation systems, practical and appealing user ...
3
votes
1answer
89 views

NoSQL Document-oriented in-memory database written in Java

The goals are: Open source Written in Java Available as a Jar file Should not need the installation or configuration of a server or a client Be document-oriented as MongoDB, CouchDB, etc. Work as in-...
3
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2answers
72 views

Write Javascript in Java

I know about JSNI but the problem is that your whole project has to use and conform to GWT in order to use it. I'm looking for something that I can make a call to which can take the Javascript code I'...
3
votes
1answer
432 views

Tool for code similarity checking on the internet

I'm looking for tools that provide similarity checking of submitted program code. Apart from the basic requirement of the tool being able to check for code similarity between submitted solutions ...
3
votes
2answers
77 views

Choosing the framework to an IDE type of web gui

I'm pretty newbie (or maybe oldie) with GUI development. Now when digging in, there seems to be massive amount of different frameworks to use. Currently I have built a java application which scrapes ...
3
votes
1answer
41 views

Fast, Scalable and Efficient Web development framework for beginners

I have knowledge of Core Java and I'm learning Python too. What is the best web development framework for beginners?. I'm trying to develop a web portal for displaying some analytics and wanted to ...
3
votes
1answer
208 views

Are there any frameworks for DDD?

I would be interested in a light framework that has at least marker annotations for people doing DDD, in Java, for starters. I know there is Apache Isis https://isis.apache.org/documentation.html ...
3
votes
1answer
356 views

Which single file, embeddable DBMS exist for Java?

I'd like to use an embedded database management system within my Java app that should store all data in one single portable file. I know already that H2 and SQLite databases seem to fit my needs, ...
3
votes
1answer
1k views

install java packages and their dependancies like pip for python

Is there some distribution manager for java like python has. Similiar to pip or easy_install. I wanted to install the joda-time.jar and I could do it manually. But just thought, there might be ...
3
votes
1answer
48 views

Simulating MPEG1/2 transmission over a noisy channel

I need to write a software that does: Get an uncompressed video from disk Compress it into MPEG-1 or MPEG-2 being able to change quantization matrix, GOP size and/or macroblock size for DCT/motion ...