This language server is written in Java and runs on the same JDK/JRE than your IDE. There is a language server process being kicked-off in the background when you work with Spring Boot projects. 'Hey To me it looks like this JRE vs JDK check doesn't work correctly in your environment and we need to fix that. Somehow Spring's detection of JDK fails under Fedora's implementation of JDK 11. The same issue appears if you use install Eclipse from the Eclipse installer. I have noticed this problem since Fedora 31+JDK 11 days, but had assumed that it was due Eclipse-on-JDK11 or immaturity-of-JDK11Ĥ. If you install AdoptOpenJDK 11 and and set the -vm argument to AdoptOpenJDK then Spring Tool Suite 4 or Eclipse+plugin runs normally.ģ.

Spring Boot Live hovers will not work with a plain JRE.'Ģ. 'The JRE you are running Eclipse with appears not to be a JDK. Install Spring Tools 4 for Eclipse (4.7.2) directly from spring.io Install Eclipse 2020-06 + Spring Tools (4.7.2) pluginġb. Version-Release number of selected component (if applicable): This is such a weird problem, BTW, and has existed since Fedora 31 days. ('The JRE you are running Eclipse with appears not to be a JDK').

When you run Spring Tool Suite 4 or Eclipse with Spring Tools for Eclipse IDE plugin it doesn't detect Fedora's JDK 11-devel package as a JDK.

Install spring tool suite on mac