
Starting from IntelliJ IDEA 2016 and the most recent versions of the lightweight IDEs, we are bundling custom JRE (JetBrains Runtime) with Linux distributions, just like we've been doing for Mac.Use Rapid Environment Editor to add/edit the variables, it will detect incorrect paths.Define IDEA_JDK / PHPSTORM_JDK / WEBIDE_JDK / PYCHARM_JDK / RUBYMINE_JDK / CL_JDK / DATAGRIP_JDK / GOLAND_JDK variable depending on the product to override the default version from IDE_HOME\jbr.The actual JDK version used by the IDE can be verified in Help | About dialog (open any project to access the menu).IDEA_JDK_64 / PHPSTORM_JDK_64 / WEBIDE_JDK_64 / PYCHARM_JDK_64 / RUBYMINE_JDK_64 / CL_JDK_64 / DATAGRIP_JDK_64 / GOLAND_JDK_64 environment variable.IDEA_JDK / PHPSTORM_JDK / WEBIDE_JDK / PYCHARM_JDK / RUBYMINE_JDK / CL_JDK / DATAGRIP_JDK / GOLAND_JDK environment variable (depends on the product, WEBIDE_JDK applies to both WebStorm and PhpStorm before version 2016.1)
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Since 2017.1 version 64-bit JDK is bundled by default on all the systems (32-bit JDK can be downloaded on Windows by the installer if needed). JDK (JetBrains Runtime) is bundled with all the product installers and it's recommended that you will use the provided JDK version unless there are any specific issues. If there is no jbr subdirectory in the IDE installation directory, reinstall the product. jdk file from the configuration directory and unset any environment variables that override the default runtime. If you can't start the IDE to access this dialog or the runtime doesn't change, please see below for the platform specific instructions.

To add a new JDK specify the home folder of the Java 11 installation on your disk.Select one of the already installed JDK 11 options or click Add JDK.

Follow the steps from the section above to open the Choose Boot Java Runtime for the IDE dialog.Remove any environment variables affecting IDE runtime selection and restart. Most likely, you have an environment variable configured which has the priority over the. If the JDK version in the About dialog doesn't match or didn't change, see below.Notice the vendor (should be JetBrains s.r.o) and the release number (should correspond to the number after b in the file you've downloaded). Verify via About dialog that the new runtime is used.Restart the IDE to try the new runtime.Click the OK button and wait until the file with JetBrains Runtime is downloaded and configured.Installing old runtime versions may render your IDE unusable or introduce new issues.
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It makes sense to install the most recent version or the version you were asked to try by JetBrains staff.

Please note that all the current IDE versions require at least Java 11 version to run. If you need to change the runtime to a different version, see below. All the products on all the supported platforms already have 64-bit JetBrains Runtime 11 bundled and it will be used by default to run the IDE.
