Eclipse Jdk 14

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I've got multiple JDKs on my system (14.04 LTS), JDK 6, 7, 8 - all Oracle. The JDK 8 is the one picked for update-alternatives. However, the Java project I'm working on requires JDK 7. I've got a separate directory in my home directory with JDK 7 in it. In eclipse.ini I've put in the -vm option specifying the JDK directory in my home. Unzip into eclipse installation directory; There should be new files in ECLIPSEROOT/plugins and ECLIPSEROOT/features; Run Eclipse; Hello World Creating JavaFX Project and configuring JavaFX SDK. You will see the basic layout of workbench. In Package Explorer view click right mouse and select New Java Project.

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Written by Nam Ha Minh
Last Updated on 04 October 2019 Print Email
In this article, I will guide you how to change JDK/JRE that runs Eclipse IDE, on Windows operating system. First, you need to know exactly which version of Java on which Eclipse is running.

1. Find the JDK / JRE that runs Eclipse

In Eclipse, click menu Help > About Eclipse IDE. Then in the About Eclipse IDE dialog, click the JdkInstallation Details button. Then in the next screen, click Configuration tab. Wait for a moment while Eclipse is retrieving configuration information, and you will see a screen as below:Find the line that starts with

Eclipse Jdk 13 Support

–vm and the value in the next line shows the exact path of JDK/JRE on which Eclipse is running. In the above screenshot, you see Eclipse is running on OpenJDK 11.0.2.


2. How to Change JDK / JRE for Eclipse

You know, Eclipse IDE is written in Java so it needs a JDK/JRE installed to run. By default, the first instance of JDK/JRE found in the PATHenvironment variable is used to run Eclipse. Consider a typical value of the PATHenvironment variable like this:In this case, the Java Virtual Machine found in the

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JAVA_HOME path will run Eclipse IDE. So changing the Java version that run Eclipse is just a matter of updating the value of the JAVA_HOMEEclipse variable.However, sometimes it doesn’t work like that. You changed JAVA_HOME points to a newer JDK/JRE, but Eclipse still runs under the old one. Why? What happens?There are two reasons:
  • An installation of Oracle Java putting its path before your JAVA_HOME, or
  • Your Eclipse IDE is configured to stick with a JDK/JRE in its configuration file.

Let me show you how to change JDK/JRE for Eclipse in both cases.Edit the PATH environment variable on Windows, and you may see a screen as below:Here, an installation of Oracle Java puts the following line before your Eclipse Jdk 14JAVA_HOME:That means the JDK/JRE found in this path is always used to run Eclipse. Your JAVA_HOME is ignored. So to change, just move your JAVA_HOME before Oracle’s javapath using the Move Up and Move Down buttons; or delete that Oracle’s javapath. Then restart Eclipse and check configuration again to make sure Eclipse is actually running on the JDK/JRE you specified.If that doesn’t work, it’s very likely that your Eclipse is somehow configured to stick with a specific version of Java Virtual Machine in its configuration file.Open the eclipse.ini file in Eclipse’s installation directory in a text editor like Notepad. You may see something like this:Now, you can change the path after the –vm line to point to a different path of JDK, or delete these two lines to use the Java version specified in the PATH

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system environment variable.Phew! That’s how to change the version of Java virtual machine that powers your Eclipse IDE. I hope you found this article helpful.You can also watch the video version below:

Other Eclipse Tutorials:


About the Author:

Nam Ha Minh is certified Java programmer (SCJP and SCWCD). He started programming with Java in the time of Java 1.4 and has been falling in love with Java since then. Make friend with him on Facebook and watch his Java videos you YouTube.
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Written by Nam Ha Minh
Last Updated on 21 April 2020 Print Email
In this post, I will guide you how to add Java 14 support in Eclipse IDE version 2020-03. You know, JDK 14 was released on March 17th 2020 but at that time, the latest version of Eclipse IDE, Eclipse 2020-03, does not support Java 14 by default.First, you need to install JDK 14 on your computer, either OpenJDK or Oracle JDK.Then configure your current Eclipse IDE (version 2020-03/4.15.0) to run on JDK 14. Follow this post if you don’t know how.Although you can run Eclipse under JDK 14, the Java compiler compliance level for your project is up to Java 13 only:So to enable Java compiler compliance level 14, you need to install a plugin for Eclipse. Click menu Help > Eclipse Marketplace… Type java 14

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into the search box and hit Enter. You will see the result as below:You can see, the first result is “Java 14 Support for Eclipse 2020-03 (4.15)”. Click Install and follow the steps. Then you must restart Eclipse.Finally, you will see the Java compiler level is set to 14:

Enjoy experimenting new language features in Java 14 now.This guide applies for Eclipse 2020-03 only. Older versions of Eclipse are not supported, and future releases will support Java 14 by default.You can also watch the video version below:You may be also interested in these posts:

Other Eclipse Tutorials:

Does Eclipse Support Jdk 14


About the Author:

Nam Ha Minh is certified Java programmer (SCJP and SCWCD). He started programming with Java in the time of Java 1.4 and has been falling in love with Java since then. Make friend with him on Facebook and watch his Java videos you YouTube.