IntelliJ - Invalid source release: 17-CodePudding

I've created a new Java project in IntelliJ with Gradle that uses Java 17. When running my app it has the error Cause: error: invalid source release: 17.

My Settings

I've installed openjdk-17 through IntelliJ and set it as my Project SDK.

The Project language level has been set to 17 - Sealed types, always-strict floating-point semantics.

In Modules -> Sources I've set the Language level to Project default (17 - Sealed types, always strict floating-point semantics).

In Modules -> Dependencies I've set the Module SDK to Project SDK openjdk-17.

In Settings -> Build, Execution, Deployment -> Compiler -> Java Compiler I've set the Project bytecode version to 17.

Gradle

plugins {
    id 'org.springframework.boot' version '2.5.6'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
}

group = 'com.app'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '17'

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-websocket'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    implementation 'com.fasterxml.jackson.core:jackson-core:2.13.0'
    implementation 'com.fasterxml.jackson.core:jackson-databind:2.13.0'
}

test {
    useJUnitPlatform()
}

I've looked at all of the answers here but I can't seem to fix this. I must be missing something but I can't find it. I've not had any problems using Java 8 or 11.

How do I resolve this?

CodePudding user response：

The message typically entails that your JAVA_HOME environment variable points to a different Java version.

Here are the steps to follow:

Close IntelliJ IDEA
Open a terminal window and check your JAVA_HOME variable value:
- *nix system: echo $JAVA_HOME
- Windows system: echo %JAVA_HOME%
The JAVA_HOME path should be pointing to a different path, then set it to the openjdk-17 path:
- *nix system: export JAVA_HOME=/path/to/openjdk-17
- Windows system: set JAVA_HOME=path\to\openjdk-17
Open your project again in IntelliJ IDEA
Make sure to set both source and target compatibility versions (not only the sourceCompatibility)

You should be able to build your project.

CodePudding user response：

Set JAVA_ HOME TO JDK 17 and check this by Opening cmd -> javac. This should return the current version of java set in your machine