OpenJDK vs. Oracle Java SE

Actually, from a software engineer's point of view, JDK is nothing fancy to think of / talk about. It's just there & it works. Until he/she has to set up a project from scratch, together with the build tool, a JDK has to be chosen. Also, when doing deployment work, having a reliable, readily available JDK to install to target systems is a blessing. Still, Oracle could have done a better job supporting OpenJDK, especially for commercial usage.

Incentivized

Oracle Java SE is well suited to long-running applications (e.g. servers). Java Swing (UI toolkit) is now rather outdated, lacking support for modern UI features. JavaFX, the potential replacement for Swing, has now been separated out of Java core. Ideally, there would be a path to migrate a large application incrementally from Swing to JavaFX, but due to different threading models and other aspects, it is difficult. At this point, it is probably better to use an embedded web browser (e.g. JxBrowser) to provide a modern UI in HTML/Javascript and keep just the business logic in Java.

Incentivized

• Best opensource packages and access to opensource APIs
• Fast and reliable to use compare to current market products.
• Business case related solutions and premium products are available
• Easier to use and best in market

Incentivized

• Plenty support built into the tool and IDE like Maven, Ant, Eclipse, IntelliJ.
• Strong object-orientation language and clear project structure.
• Wrapper underlines hardware and memory management so the developers can focus on business and implementation.
• It offers a huge library and framework support from third-parties and the community.

Incentivized

• JVM performance can be improved
• Concurrent task running needs to be improved .
• Ability to access stack memory outside or JVM processes

Incentivized

• Commercial Licensing in 2019. Oracle will charge commercial organizations using Java SE for upgrading to the latest bug fixes and updates. Organizations will now need to either limit their implementation of Java SE or may need to drop it altogether.
• Slow Performance. Due to the all of the abstraction of the JVM, Java SE programs take much more resources to compile and run compared to Python.
• Poor UI appearance on all of the major GUI libraries (Swing, SWT, etc.). Through Android Studio, it is easy to get a native look/feel for Java apps, but when it comes to desktops, the UI is far from acceptable (does not mimic the native OS's look/feel at all).

Incentivized

The language is fluent and has good support from a number of open source and commercial IDEs. Language features are added every 6 months, although long-term service releases are only available every 3 years. It would be nice if some of the older APIs were depreciated with more pressure to move to the new replacement APIs (e.g. File vs. Path), but transitions to new features are generally well implemented.

Incentivized

Java is such a mature product at this point that there is little support from the vendor that is needed. Various sources on the internet, and especially StackOverflow, provide a wealth of knowledge and advice. Areas that may benefit from support is when dealing with complex multithreading issues and security libraries.

Incentivized

OpenJDK is comparable to Oracle Java SE in most cases and you get away with significantly lower costs. Oracle Java SE have some advantages in performance on some native platforms but in most cases the OpenJDK performance is similar or at least good enough.

Incentivized

Chose to go with Java instead of Python or C++ due to the expertise on the ground with the technology, for its ease of integration with our heterogeneous setup of production servers, and for the third party library support which we've found was able to address some challenging aspects of our business problem.

Incentivized

• As per our business objectives we are 4 times benifitted with product
• Faster for development and implementation
• Reduced our cost by 30%
• Annual profits of 24%

Incentivized

• The different versions make it harder to work with other companies where some use newer versions while some use older versions, costing time to make them compatible.
• Licenses are getting to be costly, forcing us to consider OpenJDK as an alternative.
• New features take time to learn. When someone starts using them, everyone has to take time to learn.

Incentivized