Upon building using the latest version openJDK 1702 there are hundreds of errors appearing that I have no idea of. My current app automation project has been developed with Java 11. How To Change The Java Version In An Intellij Project Baeldung In our tutorial we use the open JDK 11 version. . Go to File - Project Structure - Modules. How can I know what version and path of JDK my IntelliJ IDEA is using. Go to File - Settings - Build Execution Deployment - Compiler - Java Compiler. Is it saved if you add JDK in File Project Structure SDKs. It turns out that the Maven Settings take precedence here which in my case defaulted to JDK 15. To develop Java applications in IntelliJ IDEAyou need the Java SDK JDK. From the Welcome to IntelliJ IDEA dialog. If the necessary JDK is already defined in IntelliJ IDEA select it from the JDK list. From within the editor. Create a new Groovy project. Click F...