Questions tagged [java]
Questions about or relating to the Java language, platform or virtual machine. See the JVM (Java Virtual Machine).
58
questions
1
vote
0answers
63 views
Should I pay someone to help me with an open source project? [closed]
Anyone have suggestions on how to get development help on an open-source project?
I've got some funding but not enough to hire someone yet.
I've been considering offering 'bounties' for specific tasks....
0
votes
1answer
41 views
What is the difference between jdk java net and OpenJDK
I'm fairly new to Java programming and I've recently read this article from Oracle(from September 2018). https://blogs.oracle.com/java-platform-group/oracle-jdk-releases-for-java-11-and-later. What ...
2
votes
0answers
34 views
Is JavaFX fully open-source?
It's unclear to me whether all components that comprise JavaFX are open-source. Statements on this that I found around the web seem to be unclear too.
The official OpenJFX website seems to imply that ...
2
votes
1answer
63 views
Is it allowed to modify the java.exe file
as in the title - is it allowed to modify the "Java.exe" and "javaw.exe" files? Like with Resource Hacker?
I want to change the executable icon but I am not sure if it is legit. I ...
1
vote
0answers
20 views
Source and jar without dependencies under MIT, runnable jar with dependencies under GPL
Image I would like to develop MIT (or Apache 2.0)-licensed software using an LGPL library.
As far as I understand this is allowed as long as I'm distributing the library in a seperate jar file and ...
2
votes
0answers
35 views
How I do pack JAXB 2.3.3 with my open source programme?
I wrote a little java programme in Java 8 that uses a lot JAXB stuff that I ship as a free JAR, licensed under GPL.
Users that have installed Java 9/10 installed need to use jvm parameters to run it. ...
1
vote
0answers
31 views
does anyone know the location of Oracle's 3 different berkeley db source code repositories? [closed]
The Oracle corporation states that their 3 Berkeley DB family products Berkeley DB, Berkeley DB Java Edition and Berkeley DB XML are each offered under the OSS Affero General Public License. I have to ...
1
vote
1answer
31 views
Shading dependencies with Apache License
My closed-source java project uses dependencies with Apache License (Apache Commons etc.). The license permits it fully to my understanding.
The problem is, that because of some technical decisions, ...
5
votes
4answers
1k views
How to change the licence of Java project from GNU/ GPL to MIT / BSD / Apache
I had developed a Java application which is connected to MySQL Workbench by using mysql-connector-java-8.0.21.jar file. When I deploy the project and send source code to the client he says that:
The ...
0
votes
0answers
26 views
How to change the licence of Java project from GNU/ GPL to MIT / BSD / Apache [duplicate]
I had developed a Java application which is connected to MySQL Workbench by using mysql-connector-java-8.0.21.jar file.
When I deploy the project and send source code to the client he says that:
The ...
4
votes
1answer
182 views
Is it allowed to redistribute tools.jar and JRE component of OpenJDK 8?
tl;dr Is it legal to redistribute tools.jar and JRE component of OpenJDK 8 with my app? If possible, tell me what OpenJDK vendor I can redistribute (RedHat, Azul,...) Installing JDK on user machine is ...
3
votes
1answer
29 views
Does removing some class files from a third-party jar file mean it becomes a derivative work? [duplicate]
We use several LGPL third-party library JARs in our product, some of which contain classes with security concerns, which are identified by the OWASP scan during build. We do not require the classes ...
0
votes
1answer
68 views
Is it required to disclose proprietary / closed source code of commercial software which utilizes open source CDDLv1.0 libraries?
I am working on a Java server side solution utilizing open source libraries (using jars ‘as-is’) released under CDDLv1.0 license. The open source libraries is either statically or dynamically bound in ...
-2
votes
1answer
368 views
What is the highest Java version I can use for free?
I want to develop a desktop Java application, deploy it as a jar file and sell it.
What is the latest Oracle JDK version I can use to keep it free assuming I don't need further updates nor support and ...
2
votes
1answer
254 views
Which jre may be distributed with my libgdx game?
I moved this question to this place here as I got the information on stackoverflow - the question is offtopic there. Here is my original question at SO (and the discussion): https://stackoverflow.com/...
2
votes
1answer
112 views
Licencing Question: Tomcat docker image is built from openjdk:13-jdk-oracle and that is inturn is built from oraclelinux:7-slim
I would like to know if I can use the official Tomcat Docker image from docker hub for commercial purpose without becoming liable to purchase a license or anything from Oracle or some other company.
...
7
votes
2answers
203 views
Does renaming compiled Java packages violate the Apache license?
For technical reasons (classloader issues), I need to rename the packages of the compiled version of an Apache library when I build my application, (which includes my code and the Apache code, a so-...
3
votes
0answers
54 views
Licensing question about using OpenJDK to build and run
I have a small java application which I was building with Oracle JDK till now. Now I am migrating this application to OpenJDK11 and am bit confused with the licensing. I am using RedHat distribution ...
-1
votes
2answers
86 views
Is it legal to modify Open-sourced Java JDK?
I'm planning on making an open-sourced Chinese version of Java by modifying the open-sourced Java JDK, like how the Easy Programming Language (aka. 易语言) did with Visual Basic. Is this legal?
1
vote
1answer
906 views
Java OpenJDK 11 and Spring licenses
I'm developing a web application with Spring (and Spring Boot) and Open JDK 11 and I'm very confused about their licenses and how I can combine them.
Open JDK 11 is released under GPL GNU 2 (with ...
3
votes
0answers
262 views
Java 11 program, GPLv2 + Classpath Exception license do I need to check everything
So following this schema if I wish to do everything free I can use the JDK's that are on https://jdk.java.net/
Now say that I wish to publish ready made packages for clients with jlink that I offer ...
2
votes
1answer
635 views
Java OpenJDK GPL license with CLASSPATH EXCEPTION
The JDK license said:
only where Oracle has expressly included in the particular source file's header
the words "Oracle designates..."
Then, is all the OpenJDK released under the GPL with ...
4
votes
1answer
230 views
Effect of 'download separately' on GPL linking
Suppose I have Java jar-files which I provide to my customers under a commercial closed-source license. But my jar-files depend on a few jar-files released under the GPLv2 (without any special GNU ...
1
vote
1answer
288 views
Is using LGPL 1.2 or EPL 1.0 licensed jar allowed in proprietary software in Docker?
I am creating a proprietary java application which uses some open source jars licensed with LGPL 2.1 or EPL 1.0. I am deploying the application in docker container with all jars inside it.
Is there ...
0
votes
1answer
640 views
Can I use LGPL 2.1 licensed java jar without disclosing my complete source code
I am working on a proprietary java application. I want to use a java library licensed LGPL 2.1. One condition of the license is to disclose source code. What does it exactly mean? Do I need to ...
4
votes
1answer
1k views
Can the OpenJDK runtime be used to run third-party Java applications?
With Oracle's shuttering of their Java runtime distribution (the January release will be the last version available for commercial use without a paid license) many people are recommending the use of ...
0
votes
1answer
246 views
License - register software that using JNA library
I have created a program which uses the JNA (JAVA Native Access) library.
Now, I would like to register it under some software license (I have not yet decided which), my question is:
Can I register ...
0
votes
2answers
239 views
I modified and used GPL2 Code in my Apache 2 Open Source Project - can my Project be used commercially, closed source?
I wrote a library in Java for Bcrypt. Bcrypt's OpenBSD implementation uses a exotic flavour of the standard RFC Base64 encoding. Since there are no standard implementations for this, I modified (and ...
4
votes
1answer
1k views
OpenJDK vs OracleJDK Licensing?
This answer on Stack Overflow states that the OpenJDK is licensed under GPLv2 yet the OracleJDK has a different license?
My understanding of GPL was that if they used the OpenJDK sources, they would ...
1
vote
1answer
286 views
Publishing Java project with LGPL licensed module
I have a Java project made by multiple JARs and one of them is LGPL licensed. I know that this kind of license doesn't propagate through the modules that uses it. But every code modification that I ...
-1
votes
1answer
273 views
License considerations with Java 9 deprecations
I'm using the javax.activation package in a project that is deployed as a monolithic jar. The mentioned package is licensed under CDDL 1.0 and up to now part of the Java distribution but is now ...
6
votes
1answer
1k views
Bundling JetBrains OpenJDK in closed source software
I am developing a software that comes bundled with JDK. I am planning to use JetBrains OpenJDK for this purpose as it comes with swing support for HighDPI monitors.
JetBrains OpenJDK can be found in ...
4
votes
1answer
715 views
jarjar package renaming and Apache 2.0 license violation
If we use the famous package org.apache.commons.lang3 library and modify it as below jarjar configuration;
'rule org.apache.commons.lang3.** com.sample.internal.org.apache.commons.lang3.@1'
Does ...
-1
votes
1answer
125 views
Porting Java class libraries
The license for the OpenJDK class libraries is GPL-2.0 with Classpath exception.
1) Is there any issue with regard to Oracle Corporation and copyright if the class libraries were ported to another ...
1
vote
1answer
587 views
Maven jar-with-dependencies - any violation of distribution license?
I have a Java application that uses some Apache common libraries (Apache 2.0 license).
I wanted to distribute it as a single fat jar (maven builds a single jar with dependencies packaged in a single ...
7
votes
1answer
916 views
Distributing commercial Docker container image with openjdk:8-jdk
I am building a docker image with the following dockerfile and then pushing it to an AWS ECR repository:
FROM openjdk:8-jdk
RUN ["mkdir", "/opt/mycompany"]
COPY ["myapp.war/", "/opt/mycompany/myapp....
2
votes
1answer
80 views
Copyright on files copied from other Open Source project to my Open Source
I'm working on Open Source Java library. I don't want to waste time writing classes that Spring framework already has. I want to copy single files from Spring Framework and refactor it to cut ...
1
vote
0answers
68 views
“Free” licenses understanding and workaround for a simple java app
I'm developing a java app with my hands and feet. I intend to share it with people and it may become commercial.
He who knows can write it all down in notepad but I have been using Eclipse.
The ...
0
votes
0answers
31 views
If I write a class transformer for a project licensed under CC BY-NC-ND, may I distribute that transformer?
If I write a Java class transformer that transforms code from a project licensed under CC BY-NC-ND, is that legal?
I am not actually distributing a modified copy of the project, but while a specific ...
3
votes
1answer
955 views
GPLv3 redistribution: when does it apply?
I have written a Java program designed to run server-side with a plain HTML web interface:
I am reusing and I have integrated in this app a bunch of third-party libraries that are licensed under the ...
6
votes
2answers
7k views
Can I use JavaFX in a Commercial Application for Free?
There is so much confusion regarding this simple question it's driving me crazy. The post here says
there is no difference between JavaFX and Java licence now.
The post here says that we don't ...
5
votes
1answer
2k views
Is Java for server runtimes like JBoss EAP / Wildfly still free to use?
With Oracle starting to collect license fees from different customers for using Java SE I've asked myself if the usage with a server runtime is still free. I'm no lawyer and all these licenses are ...
10
votes
1answer
4k views
Is it legal to Bundle OpenJDK + HotSpot with a closed source application?
As per my understanding, OpenJDK itself is licensed under GNU General Public License, version 2, with the Classpath Exception which should be no issue for bundling with closed source application. ...
10
votes
1answer
3k views
Is it legal to bundle Oracles JRE with an open source program?
Is it legal to bundle Oracles JRE together with the binaries of a (non commercial) open source program (GPLv3)?
3
votes
1answer
723 views
How to publish my open source library to Maven?
I wrote a GNU-GPLv3 Java library.
I want to make it available to people who use a Maven build script (pom.xml)
How to do?
What are the pre-requisites?
8
votes
1answer
2k views
Java and AGPL 3: how far does license extend into web app?
I want to use a java library released by someone else having an AGPL3 license. I'm not modifying their library, but I do link to it using
import com.theirlibrary.methodABC;
in one of my java classes ...
5
votes
1answer
2k views
Can we redistribute OpenJDK tools.jar?
My application needs some classes of tools.jar.
Many sources converge to say that one cannot redistribute tools.jar from Oracle JDK without redistributing the whole bundle.
However, the case of ...
1
vote
1answer
251 views
Licensing a derivative work from a project
I'm going to write a C library that contains the major and most useful functions from Apache Commons IO's Java package. I will rewrite in C a lot of functions contained in Apache Commons. What do I ...
7
votes
1answer
1k views
How to comply to LGPL with Maven/JAR packages?
I’m using Maven to package my JavaFX project for distribution. Since JavaFX is licensed under LGPL, I need to allow users of my project to replace its DLLs by newer or compatible versions. But I don’t ...
2
votes
1answer
464 views
Does the license of jaxb apply to the java class files it autogenerated?
Each generated java file has this header comments
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v2.2.8-b130911.1802
// See <a href="http://...
